diff options
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_da_btree.c | 45 | ||||
| -rw-r--r-- | fs/xfs/xfs_da_btree.h | 23 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_block.c | 19 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_format.h | 60 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_leaf.c | 792 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_node.c | 475 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_priv.h | 32 |
7 files changed, 924 insertions, 522 deletions
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 4d7696a02418..2f23b14e3adf 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -139,7 +139,8 @@ xfs_da_node_read_verify( bp->b_ops->verify_read(bp); return; case XFS_DIR2_LEAFN_MAGIC: - bp->b_ops = &xfs_dir2_leafn_buf_ops; + case XFS_DIR3_LEAFN_MAGIC: + bp->b_ops = &xfs_dir3_leafn_buf_ops; bp->b_ops->verify_read(bp); return; default: @@ -396,11 +397,18 @@ xfs_da_root_split(xfs_da_state_t *state, xfs_da_state_blk_t *blk1, size = (int)((char *)&oldroot->btree[be16_to_cpu(oldroot->hdr.count)] - (char *)oldroot); } else { - ASSERT(oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + struct xfs_dir3_icleaf_hdr leafhdr; + struct xfs_dir2_leaf_entry *ents; + leaf = (xfs_dir2_leaf_t *)oldroot; - size = (int)((char *)&leaf->ents[be16_to_cpu(leaf->hdr.count)] - - (char *)leaf); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + + ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC || + leafhdr.magic == XFS_DIR3_LEAFN_MAGIC); + size = (int)((char *)&ents[leafhdr.count] - (char *)leaf); } + /* XXX: can't just copy CRC headers from one block to another */ memcpy(node, oldroot, size); xfs_trans_log_buf(tp, bp, 0, size - 1); @@ -424,7 +432,8 @@ xfs_da_root_split(xfs_da_state_t *state, xfs_da_state_blk_t *blk1, node->hdr.count = cpu_to_be16(2); #ifdef DEBUG - if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)) { + if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) { ASSERT(blk1->blkno >= mp->m_dirleafblk && blk1->blkno < mp->m_dirfreeblk); ASSERT(blk2->blkno >= mp->m_dirleafblk && @@ -782,6 +791,7 @@ xfs_da_blkinfo_onlychild_validate(struct xfs_da_blkinfo *blkinfo, __u16 level) if (level == 1) { ASSERT(magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC) || magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC)); } else ASSERT(magic == cpu_to_be16(XFS_DA_NODE_MAGIC)); @@ -1565,6 +1575,7 @@ xfs_da_path_shift(xfs_da_state_t *state, xfs_da_state_path_t *path, info = blk->bp->b_addr; ASSERT(info->magic == cpu_to_be16(XFS_DA_NODE_MAGIC) || info->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + info->magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC) || info->magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC)); blk->magic = be16_to_cpu(info->magic); if (blk->magic == XFS_DA_NODE_MAGIC) { @@ -1584,12 +1595,13 @@ xfs_da_path_shift(xfs_da_state_t *state, xfs_da_state_path_t *path, NULL); break; case XFS_DIR2_LEAFN_MAGIC: + case XFS_DIR3_LEAFN_MAGIC: + blk->magic = XFS_DIR2_LEAFN_MAGIC; blk->hashval = xfs_dir2_leafn_lasthash(blk->bp, NULL); break; default: - ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC || - blk->magic == XFS_DIR2_LEAFN_MAGIC); + ASSERT(0); break; } } @@ -1833,10 +1845,16 @@ xfs_da_swap_lastblock( /* * Get values from the moved block. */ - if (dead_info->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)) { + if (dead_info->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + dead_info->magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) { + struct xfs_dir3_icleaf_hdr leafhdr; + struct xfs_dir2_leaf_entry *ents; + dead_leaf2 = (xfs_dir2_leaf_t *)dead_info; + xfs_dir3_leaf_hdr_from_disk(&leafhdr, dead_leaf2); + ents = xfs_dir3_leaf_ents_p(dead_leaf2); dead_level = 0; - dead_hash = be32_to_cpu(dead_leaf2->ents[be16_to_cpu(dead_leaf2->hdr.count) - 1].hashval); + dead_hash = be32_to_cpu(ents[leafhdr.count - 1].hashval); } else { ASSERT(dead_info->magic == cpu_to_be16(XFS_DA_NODE_MAGIC)); dead_node = (xfs_da_intnode_t *)dead_info; @@ -2281,10 +2299,17 @@ xfs_da_read_buf( XFS_TEST_ERROR((magic != XFS_DA_NODE_MAGIC) && (magic != XFS_ATTR_LEAF_MAGIC) && (magic != XFS_DIR2_LEAF1_MAGIC) && + (magic != XFS_DIR3_LEAF1_MAGIC) && (magic != XFS_DIR2_LEAFN_MAGIC) && + (magic != XFS_DIR3_LEAFN_MAGIC) && (magic1 != XFS_DIR2_BLOCK_MAGIC) && + (magic1 != XFS_DIR3_BLOCK_MAGIC) && (magic1 != XFS_DIR2_DATA_MAGIC) && - (free->hdr.magic != cpu_to_be32(XFS_DIR2_FREE_MAGIC)), + (magic1 != XFS_DIR3_DATA_MAGIC) && + (free->hdr.magic != + cpu_to_be32(XFS_DIR2_FREE_MAGIC)) && + (free->hdr.magic != + cpu_to_be32(XFS_DIR3_FREE_MAGIC)), mp, XFS_ERRTAG_DA_READ_BUF, XFS_RANDOM_DA_READ_BUF))) { trace_xfs_da_btree_corrupt(bp, _RET_IP_); diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h index ee5170c46ae1..0854b95b1dc1 100644 --- a/fs/xfs/xfs_da_btree.h +++ b/fs/xfs/xfs_da_btree.h @@ -47,6 +47,29 @@ typedef struct xfs_da_blkinfo { } xfs_da_blkinfo_t; /* + * CRC enabled directory structure types + * + * The headers change size for the additional verification information, but + * otherwise the tree layouts and contents are unchanged. + */ +#define XFS_DIR3_LEAF1_MAGIC 0x3df1 /* magic number: v2 dirlf single blks */ +#define XFS_DIR3_LEAFN_MAGIC 0x3dff /* magic number: v2 dirlf multi blks */ + +struct xfs_da3_blkinfo { + /* + * the node link manipulation code relies on the fact that the first + * element of this structure is the struct xfs_da_blkinfo so it can + * ignore the differences in the rest of the structures. + */ + struct xfs_da_blkinfo hdr; + __be32 crc; /* CRC of block */ + __be64 blkno; /* first block of the buffer */ + __be64 lsn; /* sequence number of last write */ + uuid_t uuid; /* filesystem we belong to */ + __be64 owner; /* inode that owns the block */ +}; + +/* * This is the structure of the root and intermediate nodes in the Btree. * The leaf nodes are defined above. * diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 7ec87c20cbd2..d2e445f92ffb 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -1013,6 +1013,8 @@ xfs_dir2_leaf_to_block( __be16 *tagp; /* end of entry (tag) */ int to; /* block/leaf to index */ xfs_trans_t *tp; /* transaction pointer */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; trace_xfs_dir2_leaf_to_block(args); @@ -1020,8 +1022,12 @@ xfs_dir2_leaf_to_block( tp = args->trans; mp = dp->i_mount; leaf = lbp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); ltp = xfs_dir2_leaf_tail_p(mp, leaf); + + ASSERT(leafhdr.magic == XFS_DIR2_LEAF1_MAGIC || + leafhdr.magic == XFS_DIR3_LEAF1_MAGIC); /* * If there are data blocks other than the first one, take this * opportunity to remove trailing empty data blocks that may have @@ -1058,7 +1064,7 @@ xfs_dir2_leaf_to_block( * Size of the "leaf" area in the block. */ size = (uint)sizeof(xfs_dir2_block_tail_t) + - (uint)sizeof(*lep) * (be16_to_cpu(leaf->hdr.count) - be16_to_cpu(leaf->hdr.stale)); + (uint)sizeof(*lep) * (leafhdr.count - leafhdr.stale); /* * Look at the last data entry. */ @@ -1087,18 +1093,17 @@ xfs_dir2_leaf_to_block( * Initialize the block tail. */ btp = xfs_dir2_block_tail_p(mp, hdr); - btp->count = cpu_to_be32(be16_to_cpu(leaf->hdr.count) - be16_to_cpu(leaf->hdr.stale)); + btp->count = cpu_to_be32(leafhdr.count - leafhdr.stale); btp->stale = 0; xfs_dir2_block_log_tail(tp, dbp); /* * Initialize the block leaf area. We compact out stale entries. */ lep = xfs_dir2_block_leaf_p(btp); - for (from = to = 0; from < be16_to_cpu(leaf->hdr.count); from++) { - if (leaf->ents[from].address == - cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) + for (from = to = 0; from < leafhdr.count; from++) { + if (ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) continue; - lep[to++] = leaf->ents[from]; + lep[to++] = ents[from]; } ASSERT(to == be32_to_cpu(btp->count)); xfs_dir2_block_log_leaf(tp, dbp, 0, be32_to_cpu(btp->count) - 1); diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h index 0ac09502b830..7b986d334b33 100644 --- a/fs/xfs/xfs_dir2_format.h +++ b/fs/xfs/xfs_dir2_format.h @@ -470,6 +470,21 @@ typedef struct xfs_dir2_leaf_hdr { __be16 stale; /* count of stale entries */ } xfs_dir2_leaf_hdr_t; +struct xfs_dir3_leaf_hdr { + struct xfs_da3_blkinfo info; /* header for da routines */ + __be16 count; /* count of entries */ + __be16 stale; /* count of stale entries */ + __be32 pad; +}; + +struct xfs_dir3_icleaf_hdr { + __uint32_t forw; + __uint32_t back; + __uint16_t magic; + __uint16_t count; + __uint16_t stale; +}; + /* * Leaf block entry. */ @@ -489,23 +504,50 @@ typedef struct xfs_dir2_leaf_tail { * Leaf block. */ typedef struct xfs_dir2_leaf { - xfs_dir2_leaf_hdr_t hdr; /* leaf header */ - xfs_dir2_leaf_entry_t ents[]; /* entries */ + xfs_dir2_leaf_hdr_t hdr; /* leaf header */ + xfs_dir2_leaf_entry_t __ents[]; /* entries */ } xfs_dir2_leaf_t; -/* - * DB blocks here are logical directory block numbers, not filesystem blocks. - */ +struct xfs_dir3_leaf { + struct xfs_dir3_leaf_hdr hdr; /* leaf header */ + struct xfs_dir2_leaf_entry __ents[]; /* entries */ +}; + +#define XFS_DIR3_LEAF_CRC_OFF offsetof(struct xfs_dir3_leaf_hdr, info.crc) + +static inline int +xfs_dir3_leaf_hdr_size(struct xfs_dir2_leaf *lp) +{ + if (lp->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || + lp->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) + return sizeof(struct xfs_dir3_leaf_hdr); + return sizeof(struct xfs_dir2_leaf_hdr); +} -static inline int xfs_dir2_max_leaf_ents(struct xfs_mount *mp) +static inline int +xfs_dir3_max_leaf_ents(struct xfs_mount *mp, struct xfs_dir2_leaf *lp) { - return (mp->m_dirblksize - (uint)sizeof(struct xfs_dir2_leaf_hdr)) / + return (mp->m_dirblksize - xfs_dir3_leaf_hdr_size(lp)) / (uint)sizeof(struct xfs_dir2_leaf_entry); } /* * Get address of the bestcount field in the single-leaf block. */ +static inline struct xfs_dir2_leaf_entry * +xfs_dir3_leaf_ents_p(struct xfs_dir2_leaf *lp) +{ + if (lp->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || + lp->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) { + struct xfs_dir3_leaf *lp3 = (struct xfs_dir3_leaf *)lp; + return lp3->__ents; + } + return lp->__ents; +} + +/* + * Get address of the bestcount field in the single-leaf block. + */ static inline struct xfs_dir2_leaf_tail * xfs_dir2_leaf_tail_p(struct xfs_mount *mp, struct xfs_dir2_leaf *lp) { @@ -524,6 +566,10 @@ xfs_dir2_leaf_bests_p(struct xfs_dir2_leaf_tail *ltp) } /* + * DB blocks here are logical directory block numbers, not filesystem blocks. + */ + +/* * Convert dataptr to byte in file space */ static inline xfs_dir2_off_t diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index c7dca950f768..7352e41d2aaa 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -1,5 +1,6 @@ /* * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. + * Copyright (c) 2013 Red Hat, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or @@ -33,77 +34,263 @@ #include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" +#include "xfs_buf_item.h" +#include "xfs_cksum.h" /* * Local function declarations. */ -#ifdef DEBUG -static void xfs_dir2_leaf_check(struct xfs_inode *dp, struct xfs_buf *bp); -#else -#define xfs_dir2_leaf_check(dp, bp) -#endif static int xfs_dir2_leaf_lookup_int(xfs_da_args_t *args, struct xfs_buf **lbpp, int *indexp, struct xfs_buf **dbpp); -static void xfs_dir2_leaf_log_bests(struct xfs_trans *tp, struct xfs_buf *bp, +static void xfs_dir3_leaf_log_bests(struct xfs_trans *tp, struct xfs_buf *bp, int first, int last); -static void xfs_dir2_leaf_log_tail(struct xfs_trans *tp, struct xfs_buf *bp); +static void xfs_dir3_leaf_log_tail(struct xfs_trans *tp, struct xfs_buf *bp); -static void -xfs_dir2_leaf_verify( +/* + * Check the internal consistency of a leaf1 block. + * Pop an assert if something is wrong. + */ +#ifdef DEBUG +#define xfs_dir3_leaf_check(mp, bp) \ +do { \ + if (!xfs_dir3_leaf1_check((mp), (bp))) \ + ASSERT(0); \ +} while (0); + +STATIC bool +xfs_dir3_leaf1_check( + struct xfs_mount *mp, + struct xfs_buf *bp) +{ + struct xfs_dir2_leaf *leaf = bp->b_addr; + struct xfs_dir3_icleaf_hdr leafhdr; + + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + + if (leafhdr.magic == XFS_DIR3_LEAF1_MAGIC) { + struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr; + if (be64_to_cpu(leaf3->info.blkno) != bp->b_bn) + return false; + } else if (leafhdr.magic != XFS_DIR2_LEAF1_MAGIC) + return false; + + return xfs_dir3_leaf_check_int(mp, &leafhdr, leaf); +} +#else +#define xfs_dir3_leaf_check(mp, bp) +#endif + +void +xfs_dir3_leaf_hdr_from_disk( + struct xfs_dir3_icleaf_hdr *to, + struct xfs_dir2_leaf *from) +{ + if (from->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || + from->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)) { + to->forw = be32_to_cpu(from->hdr.info.forw); + to->back = be32_to_cpu(from->hdr.info.back); + to->magic = be16_to_cpu(from->hdr.info.magic); + to->count = be16_to_cpu(from->hdr.count); + to->stale = be16_to_cpu(from->hdr.stale); + } else { + struct xfs_dir3_leaf_hdr *hdr3 = (struct xfs_dir3_leaf_hdr *)from; + + to->forw = be32_to_cpu(hdr3->info.hdr.forw); + to->back = be32_to_cpu(hdr3->info.hdr.back); + to->magic = be16_to_cpu(hdr3->info.hdr.magic); + to->count = be16_to_cpu(hdr3->count); + to->stale = be16_to_cpu(hdr3->stale); + } + + ASSERT(to->magic == XFS_DIR2_LEAF1_MAGIC || + to->magic == XFS_DIR3_LEAF1_MAGIC || + to->magic == XFS_DIR2_LEAFN_MAGIC || + to->magic == XFS_DIR3_LEAFN_MAGIC); +} + +void +xfs_dir3_leaf_hdr_to_disk( + struct xfs_dir2_leaf *to, + struct xfs_dir3_icleaf_hdr *from) +{ + ASSERT(from->magic == XFS_DIR2_LEAF1_MAGIC || + from->magic == XFS_DIR3_LEAF1_MAGIC || + from->magic == XFS_DIR2_LEAFN_MAGIC || + from->magic == XFS_DIR3_LEAFN_MAGIC); + + if (from->magic == XFS_DIR2_LEAF1_MAGIC || + from->magic == XFS_DIR2_LEAFN_MAGIC) { + to->hdr.info.forw = cpu_to_be32(from->forw); + to->hdr.info.back = cpu_to_be32(from->back); + to->hdr.info.magic = cpu_to_be16(from->magic); + to->hdr.count = cpu_to_be16(from->count); + to->hdr.stale = cpu_to_be16(from->stale); + } else { + struct xfs_dir3_leaf_hdr *hdr3 = (struct xfs_dir3_leaf_hdr *)to; + + hdr3->info.hdr.forw = cpu_to_be32(from->forw); + hdr3->info.hdr.back = cpu_to_be32(from->back); + hdr3->info.hdr.magic = cpu_to_be16(from->magic); + hdr3->count = cpu_to_be16(from->count); + hdr3->stale = cpu_to_be16(from->stale); + } +} + +bool +xfs_dir3_leaf_check_int( + struct xfs_mount *mp, + struct xfs_dir3_icleaf_hdr *hdr, + struct xfs_dir2_leaf *leaf) +{ + struct xfs_dir2_leaf_entry *ents; + xfs_dir2_leaf_tail_t *ltp; + int stale; + int i; + + ents = xfs_dir3_leaf_ents_p(leaf); + ltp = xfs_dir2_leaf_tail_p(mp, leaf); + + /* + * XXX (dgc): This value is not restrictive enough. + * Should factor in the size of the bests table as well. + * We can deduce a value for that from di_size. + */ + if (hdr->count > xfs_dir3_max_leaf_ents(mp, leaf)) + return false; + + /* Leaves and bests don't overlap in leaf format. */ + if ((hdr->magic == XFS_DIR2_LEAF1_MAGIC || + hdr->magic == XFS_DIR3_LEAF1_MAGIC) && + (char *)&ents[hdr->count] > (char *)xfs_dir2_leaf_bests_p(ltp)) + return false; + + /* Check hash value order, count stale entries. */ + for (i = stale = 0; i < hdr->count; i++) { + if (i + 1 < hdr->count) { + if (be32_to_cpu(ents[i].hashval) > + be32_to_cpu(ents[i + 1].hashval)) + return false; + } + if (ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) + stale++; + } + if (hdr->stale != stale) + return false; + return true; +} + +static bool +xfs_dir3_leaf_verify( struct xfs_buf *bp, - __be16 magic) + __uint16_t magic) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + struct xfs_dir2_leaf *leaf = bp->b_addr; + struct xfs_dir3_icleaf_hdr leafhdr; + + ASSERT(magic == XFS_DIR2_LEAF1_MAGIC || magic == XFS_DIR2_LEAFN_MAGIC); + + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + if (xfs_sb_version_hascrc(&mp->m_sb)) { + struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr; + + if ((magic == XFS_DIR2_LEAF1_MAGIC && + leafhdr.magic != XFS_DIR3_LEAF1_MAGIC) || + (magic == XFS_DIR2_LEAFN_MAGIC && + leafhdr.magic != XFS_DIR3_LEAFN_MAGIC)) + return false; + + if (!uuid_equal(&leaf3->info.uuid, &mp->m_sb.sb_uuid)) + return false; + if (be64_to_cpu(leaf3->info.blkno) != bp->b_bn) + return false; + } else { + if (leafhdr.magic != magic) + return false; + } + return xfs_dir3_leaf_check_int(mp, &leafhdr, leaf); +} + +static void +__read_verify( + struct xfs_buf *bp, + __uint16_t magic) +{ + struct xfs_mount *mp = bp->b_target->bt_mount; + + if ((xfs_sb_version_hascrc(&mp->m_sb) && + !xfs_verify_cksum(bp->b_addr, BBTOB(bp->b_length), + XFS_DIR3_LEAF_CRC_OFF)) || + !xfs_dir3_leaf_verify(bp, magic)) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); + xfs_buf_ioerror(bp, EFSCORRUPTED); + } +} + +static void +__write_verify( + struct xfs_buf *bp, + __uint16_t magic) { struct xfs_mount *mp = bp->b_target->bt_mount; - struct xfs_dir2_leaf_hdr *hdr = bp->b_addr; - int block_ok = 0; + struct xfs_buf_log_item *bip = bp->b_fspriv; + struct xfs_dir3_leaf_hdr *hdr3 = bp->b_addr; - block_ok = hdr->info.magic == magic; - if (!block_ok) { - XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, hdr); + if (!xfs_dir3_leaf_verify(bp, magic)) { + XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, bp->b_addr); xfs_buf_ioerror(bp, EFSCORRUPTED); + return; } + + if (!xfs_sb_version_hascrc(&mp->m_sb)) + return; + + if (bip) + hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn); + + xfs_update_cksum(bp->b_addr, BBTOB(bp->b_length), XFS_DIR3_LEAF_CRC_OFF); } static void -xfs_dir2_leaf1_read_verify( +xfs_dir3_leaf1_read_verify( struct xfs_buf *bp) { - xfs_dir2_leaf_verify(bp, cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)); + __read_verify(bp, XFS_DIR2_LEAF1_MAGIC); } static void -xfs_dir2_leaf1_write_verify( +xfs_dir3_leaf1_write_verify( struct xfs_buf *bp) { - xfs_dir2_leaf_verify(bp, cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)); + __write_verify(bp, XFS_DIR2_LEAF1_MAGIC); } -void -xfs_dir2_leafn_read_verify( +static void +xfs_dir3_leafn_read_verify( struct xfs_buf *bp) { - xfs_dir2_leaf_verify(bp, cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + __read_verify(bp, XFS_DIR2_LEAFN_MAGIC); } -void -xfs_dir2_leafn_write_verify( +static void +xfs_dir3_leafn_write_verify( struct xfs_buf *bp) { - xfs_dir2_leaf_verify(bp, cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + __write_verify(bp, XFS_DIR2_LEAFN_MAGIC); } -static const struct xfs_buf_ops xfs_dir2_leaf1_buf_ops = { - .verify_read = xfs_dir2_leaf1_read_verify, - .verify_write = xfs_dir2_leaf1_write_verify, +static const struct xfs_buf_ops xfs_dir3_leaf1_buf_ops = { + .verify_read = xfs_dir3_leaf1_read_verify, + .verify_write = xfs_dir3_leaf1_write_verify, }; -const struct xfs_buf_ops xfs_dir2_leafn_buf_ops = { - .verify_read = xfs_dir2_leafn_read_verify, - .verify_write = xfs_dir2_leafn_write_verify, +const struct xfs_buf_ops xfs_dir3_leafn_buf_ops = { + .verify_read = xfs_dir3_leafn_read_verify, + .verify_write = xfs_dir3_leafn_write_verify, }; static int -xfs_dir2_leaf_read( +xfs_dir3_leaf_read( struct xfs_trans *tp, struct xfs_inode *dp, xfs_dablk_t fbno, @@ -111,11 +298,11 @@ xfs_dir2_leaf_read( struct xfs_buf **bpp) { return xfs_da_read_buf(tp, dp, fbno, mappedbno, bpp, - XFS_DATA_FORK, &xfs_dir2_leaf1_buf_ops); + XFS_DATA_FORK, &xfs_dir3_leaf1_buf_ops); } int -xfs_dir2_leafn_read( +xfs_dir3_leafn_read( struct xfs_trans *tp, struct xfs_inode *dp, xfs_dablk_t fbno, @@ -123,7 +310,81 @@ xfs_dir2_leafn_read( struct xfs_buf **bpp) { return xfs_da_read_buf(tp, dp, fbno, mappedbno, bpp, - XFS_DATA_FORK, &xfs_dir2_leafn_buf_ops); + XFS_DATA_FORK, &xfs_dir3_leafn_buf_ops); +} + +/* + * Initialize a new leaf block, leaf1 or leafn magic accepted. + */ +static void +xfs_dir3_leaf_init( + struct xfs_mount *mp, + struct xfs_buf *bp, + xfs_ino_t owner, + __uint16_t type) +{ + struct xfs_dir2_leaf *leaf = bp->b_addr; + + ASSERT(type == XFS_DIR2_LEAF1_MAGIC || type == XFS_DIR2_LEAFN_MAGIC); + + if (xfs_sb_version_hascrc(&mp->m_sb)) { + struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr; + + memset(leaf3, 0, sizeof(*leaf3)); + + leaf3->info.hdr.magic = (type == XFS_DIR2_LEAF1_MAGIC) + ? cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) + : cpu_to_be16(XFS_DIR3_LEAFN_MAGIC); + leaf3->info.blkno = cpu_to_be64(bp->b_bn); + leaf3->info.owner = cpu_to_be64(owner); + uuid_copy(&leaf3->info.uuid, &mp->m_sb.sb_uuid); + } else { + memset(leaf, 0, sizeof(*leaf)); + leaf->hdr.info.magic = cpu_to_be16(type); + } + + /* + * If it's a leaf-format directory initialize the tail. + * Caller is responsible for initialising the bests table. + */ + if (type == XFS_DIR2_LEAF1_MAGIC) { + struct xfs_dir2_leaf_tail *ltp; + + ltp = xfs_dir2_leaf_tail_p(mp, leaf); + ltp->bestcount = 0; + bp->b_ops = &xfs_dir3_leaf1_buf_ops; + } else + bp->b_ops = &xfs_dir3_leafn_buf_ops; +} + +int +xfs_dir3_leaf_get_buf( + xfs_da_args_t *args, + xfs_dir2_db_t bno, + struct xfs_buf **bpp, + __uint16_t magic) +{ + struct xfs_inode *dp = args->dp; + struct xfs_trans *tp = args->trans; + struct xfs_mount *mp = dp->i_mount; + struct xfs_buf *bp; + int error; + + ASSERT(magic == XFS_DIR2_LEAF1_MAGIC || magic == XFS_DIR2_LEAFN_MAGIC); + ASSERT(bno >= XFS_DIR2_LEAF_FIRSTDB(mp) && + bno < XFS_DIR2_FREE_FIRSTDB(mp)); + + error = xfs_da_get_buf(tp, dp, xfs_dir2_db_to_da(mp, bno), -1, &bp, + XFS_DATA_FORK); + if (error) + return error; + + xfs_dir3_leaf_init(mp, bp, dp->i_ino, magic); + xfs_dir3_leaf_log_header(tp, bp); + if (magic == XFS_DIR2_LEAF1_MAGIC) + xfs_dir3_leaf_log_tail(tp, bp); + *bpp = bp; + return 0; } /* @@ -150,6 +411,8 @@ xfs_dir2_block_to_leaf( int needscan; /* need to rescan bestfree */ xfs_trans_t *tp; /* transaction pointer */ struct xfs_dir2_data_free *bf; + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; trace_xfs_dir2_block_to_leaf(args); @@ -169,27 +432,33 @@ xfs_dir2_block_to_leaf( /* * Initialize the leaf block, get a buffer for it. */ - if ((error = xfs_dir2_leaf_init(args, ldb, &lbp, XFS_DIR2_LEAF1_MAGIC))) { + error = xfs_dir3_leaf_get_buf(args, ldb, &lbp, XFS_DIR2_LEAF1_MAGIC); + if (error) return error; - } - ASSERT(lbp != NULL); + leaf = lbp->b_addr; hdr = dbp->b_addr; xfs_dir3_data_check(dp, dbp); btp = xfs_dir2_block_tail_p(mp, hdr); blp = xfs_dir2_block_leaf_p(btp); bf = xfs_dir3_data_bestfree_p(hdr); + ents = xfs_dir3_leaf_ents_p(leaf); + /* * Set the counts in the leaf header. */ - leaf->hdr.count = cpu_to_be16(be32_to_cpu(btp->count)); - leaf->hdr.stale = cpu_to_be16(be32_to_cpu(btp->stale)); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + leafhdr.count = be32_to_cpu(btp->count); + leafhdr.stale = be32_to_cpu(btp->stale); + xfs_dir3_leaf_hdr_to_disk(leaf, &leafhdr); + xfs_dir3_leaf_log_header(tp, lbp); + /* * Could compact these but I think we always do the conversion * after squeezing out stale entries. */ - memcpy(leaf->ents, blp, be32_to_cpu(btp->count) * sizeof(xfs_dir2_leaf_entry_t)); - xfs_dir2_leaf_log_ents(tp, lbp, 0, be16_to_cpu(leaf->hdr.count) - 1); + memcpy(ents, blp, be32_to_cpu(btp->count) * sizeof(xfs_dir2_leaf_entry_t)); + xfs_dir3_leaf_log_ents(tp, lbp, 0, leafhdr.count - 1); needscan = 0; needlog = 1; /* @@ -224,15 +493,16 @@ xfs_dir2_block_to_leaf( */ if (needlog) xfs_dir2_data_log_header(tp, dbp); - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_check(mp, lbp); xfs_dir3_data_check(dp, dbp); - xfs_dir2_leaf_log_bests(tp, lbp, 0, 0); + xfs_dir3_leaf_log_bests(tp, lbp, 0, 0); return 0; } STATIC void -xfs_dir2_leaf_find_stale( - struct xfs_dir2_leaf *leaf, +xfs_dir3_leaf_find_stale( + struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int index, int *lowstale, int *highstale) @@ -241,7 +511,7 @@ xfs_dir2_leaf_find_stale( * Find the first stale entry before our index, if any. */ for (*lowstale = index - 1; *lowstale >= 0; --*lowstale) { - if (leaf->ents[*lowstale].address == + if (ents[*lowstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) break; } @@ -251,10 +521,8 @@ xfs_dir2_leaf_find_stale( * Stop if the result would require moving more entries than using * lowstale. */ - for (*highstale = index; - *highstale < be16_to_cpu(leaf->hdr.count); - ++*highstale) { - if (leaf->ents[*highstale].address == + for (*highstale = index; *highstale < leafhdr->count; ++*highstale) { + if (ents[*highstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) break; if (*lowstale >= 0 && index - *lowstale <= *highstale - index) @@ -263,8 +531,9 @@ xfs_dir2_leaf_find_stale( } struct xfs_dir2_leaf_entry * -xfs_dir2_leaf_find_entry( - xfs_dir2_leaf_t *leaf, /* leaf structure */ +xfs_dir3_leaf_find_entry( + struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int index, /* leaf table position */ int compact, /* need to compact leaves */ int lowstale, /* index of prev stale leaf */ @@ -272,7 +541,7 @@ xfs_dir2_leaf_find_entry( int *lfloglow, /* low leaf logging index */ int *lfloghigh) /* high leaf logging index */ { - if (!leaf->hdr.stale) { + if (!leafhdr->stale) { xfs_dir2_leaf_entry_t *lep; /* leaf entry table pointer */ /* @@ -280,18 +549,16 @@ xfs_dir2_leaf_find_entry( * * If there are no stale entries, just insert a hole at index. */ - lep = &leaf->ents[index]; - if (index < be16_to_cpu(leaf->hdr.count)) + lep = &ents[index]; + if (index < leafhdr->count) memmove(lep + 1, lep, - (be16_to_cpu(leaf->hdr.count) - index) * - sizeof(*lep)); + (leafhdr->count - index) * sizeof(*lep)); /* * Record low and high logging indices for the leaf. */ *lfloglow = index; - *lfloghigh = be16_to_cpu(leaf->hdr.count); - be16_add_cpu(&leaf->hdr.count, 1); + *lfloghigh = leafhdr->count++; return lep; } @@ -305,16 +572,17 @@ xfs_dir2_leaf_find_entry( * entries before and after our insertion point. */ if (compact == 0) - xfs_dir2_leaf_find_stale(leaf, index, &lowstale, &highstale); + xfs_dir3_leaf_find_stale(leafhdr, ents, index, + &lowstale, &highstale); /* * If the low one is better, use it. */ if (lowstale >= 0 && - (highstale == be16_to_cpu(leaf->hdr.count) || + (highstale == leafhdr->count || index - lowstale - 1 < highstale - index)) { ASSERT(index - lowstale - 1 >= 0); - ASSERT(leaf->ents[lowstale].address == + ASSERT(ents[lowstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)); /* @@ -322,37 +590,34 @@ xfs_dir2_leaf_find_entry( * for the new entry. */ if (index - lowstale - 1 > 0) { - memmove(&leaf->ents[lowstale], - &leaf->ents[lowstale + 1], + memmove(&ents[lowstale], &ents[lowstale + 1], (index - lowstale - 1) * - sizeof(xfs_dir2_leaf_entry_t)); + sizeof(xfs_dir2_leaf_entry_t)); } *lfloglow = MIN(lowstale, *lfloglow); *lfloghigh = MAX(index - 1, *lfloghigh); - be16_add_cpu(&leaf->hdr.stale, -1); - return &leaf->ents[index - 1]; + leafhdr->stale--; + return &ents[index - 1]; } /* * The high one is better, so use that one. */ ASSERT(highstale - index >= 0); - ASSERT(leaf->ents[highstale].address == - cpu_to_be32(XFS_DIR2_NULL_DATAPTR)); + ASSERT(ents[highstale].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)); /* * Copy entries down to cover the stale entry and make room for the * new entry. */ if (highstale - index > 0) { - memmove(&leaf->ents[index + 1], - &leaf->ents[index], + memmove(&ents[index + 1], &ents[index], (highstale - index) * sizeof(xfs_dir2_leaf_entry_t)); } *lfloglow = MIN(index, *lfloglow); *lfloghigh = MAX(highstale, *lfloghigh); - be16_add_cpu(&leaf->hdr.stale, -1); - return &leaf->ents[index]; + leafhdr->stale--; + return &ents[index]; } /* @@ -390,6 +655,8 @@ xfs_dir2_leaf_addname( xfs_trans_t *tp; /* transaction pointer */ xfs_dir2_db_t use_block; /* data block number */ struct xfs_dir2_data_free *bf; /* bestfree table */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; trace_xfs_dir2_leaf_addname(args); @@ -397,7 +664,7 @@ xfs_dir2_leaf_addname( tp = args->trans; mp = dp->i_mount; - error = xfs_dir2_leaf_read(tp, dp, mp->m_dirleafblk, -1, &lbp); + error = xfs_dir3_leaf_read(tp, dp, mp->m_dirleafblk, -1, &lbp); if (error) return error; @@ -410,16 +677,19 @@ xfs_dir2_leaf_addname( index = xfs_dir2_leaf_search_hash(args, lbp); leaf = lbp->b_addr; ltp = xfs_dir2_leaf_tail_p(mp, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); bestsp = xfs_dir2_leaf_bests_p(ltp); length = xfs_dir2_data_entsize(args->namelen); + /* * See if there are any entries with the same hash value * and space in their block for the new entry. * This is good because it puts multiple same-hash value entries * in a data block, improving the lookup of those entries. */ - for (use_block = -1, lep = &leaf->ents[index]; - index < be16_to_cpu(leaf->hdr.count) && be32_to_cpu(lep->hashval) == args->hashval; + for (use_block = -1, lep = &ents[index]; + index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval; index++, lep++) { if (be32_to_cpu(lep->address) == XFS_DIR2_NULL_DATAPTR) continue; @@ -452,7 +722,7 @@ xfs_dir2_leaf_addname( * How many bytes do we need in the leaf block? */ needbytes = 0; - if (!leaf->hdr.stale) + if (!leafhdr.stale) needbytes += sizeof(xfs_dir2_leaf_entry_t); if (use_block == -1) needbytes += sizeof(xfs_dir2_data_off_t); @@ -467,16 +737,15 @@ xfs_dir2_leaf_addname( * If we don't have enough free bytes but we can make enough * by compacting out stale entries, we'll do that. */ - if ((char *)bestsp - (char *)&leaf->ents[be16_to_cpu(leaf->hdr.count)] < - needbytes && be16_to_cpu(leaf->hdr.stale) > 1) { + if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes && + leafhdr.stale > 1) compact = 1; - } + /* * Otherwise if we don't have enough free bytes we need to * convert to node form. */ - else if ((char *)bestsp - (char *)&leaf->ents[be16_to_cpu( - leaf->hdr.count)] < needbytes) { + else if ((char *)bestsp - (char *)&ents[leafhdr.count] < needbytes) { /* * Just checking or no space reservation, give up. */ @@ -524,15 +793,15 @@ xfs_dir2_leaf_addname( * point later. */ if (compact) { - xfs_dir2_leaf_compact_x1(lbp, &index, &lowstale, &highstale, - &lfloglow, &lfloghigh); + xfs_dir3_leaf_compact_x1(&leafhdr, ents, &index, &lowstale, + &highstale, &lfloglow, &lfloghigh); } /* * There are stale entries, so we'll need log-low and log-high * impossibly bad values later. */ - else if (be16_to_cpu(leaf->hdr.stale)) { - lfloglow = be16_to_cpu(leaf->hdr.count); + else if (leafhdr.stale) { + lfloglow = leafhdr.count; lfloghigh = -1; } /* @@ -564,14 +833,14 @@ xfs_dir2_leaf_addname( memmove(&bestsp[0], &bestsp[1], be32_to_cpu(ltp->bestcount) * sizeof(bestsp[0])); be32_add_cpu(<p->bestcount, 1); - xfs_dir2_leaf_log_tail(tp, lbp); - xfs_dir2_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); + xfs_dir3_leaf_log_tail(tp, lbp); + xfs_dir3_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); } /* * If we're filling in a previously empty block just log it. */ else - xfs_dir2_leaf_log_bests(tp, lbp, use_block, use_block); + xfs_dir3_leaf_log_bests(tp, lbp, use_block, use_block); hdr = dbp->b_addr; bf = xfs_dir3_data_bestfree_p(hdr); bestsp[use_block] = bf[0].length; @@ -632,10 +901,10 @@ xfs_dir2_leaf_addname( if (be16_to_cpu(bestsp[use_block]) != be16_to_cpu(bf[0].length)) { bestsp[use_block] = bf[0].length; if (!grown) - xfs_dir2_leaf_log_bests(tp, lbp, use_block, use_block); + xfs_dir3_leaf_log_bests(tp, lbp, use_block, use_block); } - lep = xfs_dir2_leaf_find_entry(leaf, index, compact, lowstale, + lep = xfs_dir3_leaf_find_entry(&leafhdr, ents, index, compact, lowstale, highstale, &lfloglow, &lfloghigh); /* @@ -647,82 +916,40 @@ xfs_dir2_leaf_addname( /* * Log the leaf fields and give up the buffers. */ - xfs_dir2_leaf_log_header(tp, lbp); - xfs_dir2_leaf_log_ents(tp, lbp, lfloglow, lfloghigh); - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_hdr_to_disk(leaf, &leafhdr); + xfs_dir3_leaf_log_header(tp, lbp); + xfs_dir3_leaf_log_ents(tp, lbp, lfloglow, lfloghigh); + xfs_dir3_leaf_check(mp, lbp); xfs_dir3_data_check(dp, dbp); return 0; } -#ifdef DEBUG -/* - * Check the internal consistency of a leaf1 block. - * Pop an assert if something is wrong. - */ -STATIC void -xfs_dir2_leaf_check( - struct xfs_inode *dp, /* incore directory inode */ - struct xfs_buf *bp) /* leaf's buffer */ -{ - int i; /* leaf index */ - xfs_dir2_leaf_t *leaf; /* leaf structure */ - xfs_dir2_leaf_tail_t *ltp; /* leaf tail pointer */ - xfs_mount_t *mp; /* filesystem mount point */ - int stale; /* count of stale leaves */ - - leaf = bp->b_addr; - mp = dp->i_mount; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)); - /* - * This value is not restrictive enough. - * Should factor in the size of the bests table as well. - * We can deduce a value for that from di_size. - */ - ASSERT(be16_to_cpu(leaf->hdr.count) <= xfs_dir2_max_leaf_ents(mp)); - ltp = xfs_dir2_leaf_tail_p(mp, leaf); - /* - * Leaves and bests don't overlap. - */ - ASSERT((char *)&leaf->ents[be16_to_cpu(leaf->hdr.count)] <= - (char *)xfs_dir2_leaf_bests_p(ltp)); - /* - * Check hash value order, count stale entries. - */ - for (i = stale = 0; i < be16_to_cpu(leaf->hdr.count); i++) { - if (i + 1 < be16_to_cpu(leaf->hdr.count)) - ASSERT(be32_to_cpu(leaf->ents[i].hashval) <= - be32_to_cpu(leaf->ents[i + 1].hashval)); - if (leaf->ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) - stale++; - } - ASSERT(be16_to_cpu(leaf->hdr.stale) == stale); -} -#endif /* DEBUG */ - /* * Compact out any stale entries in the leaf. * Log the header and changed leaf entries, if any. */ void -xfs_dir2_leaf_compact( +xfs_dir3_leaf_compact( xfs_da_args_t *args, /* operation arguments */ + struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp) /* leaf buffer */ { int from; /* source leaf index */ xfs_dir2_leaf_t *leaf; /* leaf structure */ int loglow; /* first leaf entry to log */ int to; /* target leaf index */ + struct xfs_dir2_leaf_entry *ents; leaf = bp->b_addr; - if (!leaf->hdr.stale) { + if (!leafhdr->stale) return; - } + /* * Compress out the stale entries in place. */ - for (from = to = 0, loglow = -1; from < be16_to_cpu(leaf->hdr.count); from++) { - if (leaf->ents[from].address == - cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) + ents = xfs_dir3_leaf_ents_p(leaf); + for (from = to = 0, loglow = -1; from < leafhdr->count; from++) { + if (ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) continue; /* * Only actually copy the entries that are different. @@ -730,19 +957,21 @@ xfs_dir2_leaf_compact( if (from > to) { if (loglow == -1) loglow = to; - leaf->ents[to] = leaf->ents[from]; + ents[to] = ents[from]; } to++; } /* * Update and log the header, log the leaf entries. */ - ASSERT(be16_to_cpu(leaf->hdr.stale) == from - to); - be16_add_cpu(&leaf->hdr.count, -(be16_to_cpu(leaf->hdr.stale))); - leaf->hdr.stale = 0; - xfs_dir2_leaf_log_header(args->trans, bp); + ASSERT(leafhdr->stale == from - to); + leafhdr->count -= leafhdr->stale; + leafhdr->stale = 0; + + xfs_dir3_leaf_hdr_to_disk(leaf, leafhdr); + xfs_dir3_leaf_log_header(args->trans, bp); if (loglow != -1) - xfs_dir2_leaf_log_ents(args->trans, bp, loglow, to - 1); + xfs_dir3_leaf_log_ents(args->trans, bp, loglow, to - 1); } /* @@ -754,8 +983,9 @@ xfs_dir2_leaf_compact( * and leaf logging indices. */ void -xfs_dir2_leaf_compact_x1( - struct xfs_buf *bp, /* leaf buffer */ +xfs_dir3_leaf_compact_x1( + struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int *indexp, /* insertion index */ int *lowstalep, /* out: stale entry before us */ int *highstalep, /* out: stale entry after us */ @@ -766,22 +996,20 @@ xfs_dir2_leaf_compact_x1( int highstale; /* stale entry at/after index */ int index; /* insertion index */ int keepstale; /* source index of kept stale */ - xfs_dir2_leaf_t *leaf; /* leaf structure */ int lowstale; /* stale entry before index */ int newindex=0; /* new insertion index */ int to; /* destination copy index */ - leaf = bp->b_addr; - ASSERT(be16_to_cpu(leaf->hdr.stale) > 1); + ASSERT(leafhdr->stale > 1); index = *indexp; - xfs_dir2_leaf_find_stale(leaf, index, &lowstale, &highstale); + xfs_dir3_leaf_find_stale(leafhdr, ents, index, &lowstale, &highstale); /* * Pick the better of lowstale and highstale. */ if (lowstale >= 0 && - (highstale == be16_to_cpu(leaf->hdr.count) || + (highstale == leafhdr->count || index - lowstale <= highstale - index)) keepstale = lowstale; else @@ -790,15 +1018,14 @@ xfs_dir2_leaf_compact_x1( * Copy the entries in place, removing all the stale entries * except keepstale. */ - for (from = to = 0; from < be16_to_cpu(leaf->hdr.count); from++) { + for (from = to = 0; from < leafhdr->count; from++) { /* * Notice the new value of index. */ if (index == from) newindex = to; if (from != keepstale && - leaf->ents[from].address == - cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) { + ents[from].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) { if (from == to) *lowlogp = to; continue; @@ -812,7 +1039,7 @@ xfs_dir2_leaf_compact_x1( * Copy only the entries that have moved. */ if (from > to) - leaf->ents[to] = leaf->ents[from]; + ents[to] = ents[from]; to++; } ASSERT(from > to); @@ -826,8 +1053,8 @@ xfs_dir2_leaf_compact_x1( /* * Adjust the leaf header values. */ - be16_add_cpu(&leaf->hdr.count, -(from - to)); - leaf->hdr.stale = cpu_to_be16(1); + leafhdr->count -= from - to; + leafhdr->stale = 1; /* * Remember the low/high stale value only in the "right" * direction. @@ -835,8 +1062,8 @@ xfs_dir2_leaf_compact_x1( if (lowstale >= newindex) lowstale = -1; else - highstale = be16_to_cpu(leaf->hdr.count); - *highlogp = be16_to_cpu(leaf->hdr.count) - 1; + highstale = leafhdr->count; + *highlogp = leafhdr->count - 1; *lowstalep = lowstale; *highstalep = highstale; } @@ -1229,69 +1456,12 @@ xfs_dir2_leaf_getdents( return error; } -/* - * Initialize a new leaf block, leaf1 or leafn magic accepted. - */ -int -xfs_dir2_leaf_init( - xfs_da_args_t *args, /* operation arguments */ - xfs_dir2_db_t bno, /* directory block number */ - struct xfs_buf **bpp, /* out: leaf buffer */ - int magic) /* magic number for block */ -{ - struct xfs_buf *bp; /* leaf buffer */ - xfs_inode_t *dp; /* incore directory inode */ - int error; /* error return code */ - xfs_dir2_leaf_t *leaf; /* leaf structure */ - xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ - xfs_mount_t *mp; /* filesystem mount point */ - xfs_trans_t *tp; /* transaction pointer */ - - dp = args->dp; - ASSERT(dp != NULL); - tp = args->trans; - mp = dp->i_mount; - ASSERT(bno >= XFS_DIR2_LEAF_FIRSTDB(mp) && - bno < XFS_DIR2_FREE_FIRSTDB(mp)); - /* - * Get the buffer for the block. - */ - error = xfs_da_get_buf(tp, dp, xfs_dir2_db_to_da(mp, bno), -1, &bp, - XFS_DATA_FORK); - if (error) - return error; - - /* - * Initialize the header. - */ - leaf = bp->b_addr; - leaf->hdr.info.magic = cpu_to_be16(magic); - leaf->hdr.info.forw = 0; - leaf->hdr.info.back = 0; - leaf->hdr.count = 0; - leaf->hdr.stale = 0; - xfs_dir2_leaf_log_header(tp, bp); - /* - * If it's a leaf-format directory initialize the tail. - * In this case our caller has the real bests table to copy into - * the block. - */ - if (magic == XFS_DIR2_LEAF1_MAGIC) { - bp->b_ops = &xfs_dir2_leaf1_buf_ops; - ltp = xfs_dir2_leaf_tail_p(mp, leaf); - ltp->bestcount = 0; - xfs_dir2_leaf_log_tail(tp, bp); - } else - bp->b_ops = &xfs_dir2_leafn_buf_ops; - *bpp = bp; - return 0; -} /* * Log the bests entries indicated from a leaf1 block. */ static void -xfs_dir2_leaf_log_bests( +xfs_dir3_leaf_log_bests( xfs_trans_t *tp, /* transaction pointer */ struct xfs_buf *bp, /* leaf buffer */ int first, /* first entry to log */ @@ -1299,11 +1469,12 @@ xfs_dir2_leaf_log_bests( { __be16 *firstb; /* pointer to first entry */ __be16 *lastb; /* pointer to last entry */ - xfs_dir2_leaf_t *leaf; /* leaf structure */ + struct xfs_dir2_leaf *leaf = bp->b_addr; xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ - leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)); + ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC)); + ltp = xfs_dir2_leaf_tail_p(tp->t_mountp, leaf); firstb = xfs_dir2_leaf_bests_p(ltp) + first; lastb = xfs_dir2_leaf_bests_p(ltp) + last; @@ -1315,7 +1486,7 @@ xfs_dir2_leaf_log_bests( * Log the leaf entries indicated from a leaf1 or leafn block. */ void -xfs_dir2_leaf_log_ents( +xfs_dir3_leaf_log_ents( xfs_trans_t *tp, /* transaction pointer */ struct xfs_buf *bp, /* leaf buffer */ int first, /* first entry to log */ @@ -1323,13 +1494,17 @@ xfs_dir2_leaf_log_ents( { xfs_dir2_leaf_entry_t *firstlep; /* pointer to first entry */ xfs_dir2_leaf_entry_t *lastlep; /* pointer to last entry */ - xfs_dir2_leaf_t *leaf; /* leaf structure */ + struct xfs_dir2_leaf *leaf = bp->b_addr; + struct xfs_dir2_leaf_entry *ents; - leaf = bp->b_addr; ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || - leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - firstlep = &leaf->ents[first]; - lastlep = &leaf->ents[last]; + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)); + + ents = xfs_dir3_leaf_ents_p(leaf); + firstlep = &ents[first]; + lastlep = &ents[last]; xfs_trans_log_buf(tp, bp, (uint)((char *)firstlep - (char *)leaf), (uint)((char *)lastlep - (char *)leaf + sizeof(*lastlep) - 1)); } @@ -1338,34 +1513,38 @@ xfs_dir2_leaf_log_ents( * Log the header of the leaf1 or leafn block. */ void -xfs_dir2_leaf_log_header( +xfs_dir3_leaf_log_header( struct xfs_trans *tp, struct xfs_buf *bp) { - xfs_dir2_leaf_t *leaf; /* leaf structure */ + struct xfs_dir2_leaf *leaf = bp->b_addr; - leaf = bp->b_addr; ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || - leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)); + xfs_trans_log_buf(tp, bp, (uint)((char *)&leaf->hdr - (char *)leaf), - (uint)(sizeof(leaf->hdr) - 1)); + xfs_dir3_leaf_hdr_size(leaf) - 1); } /* * Log the tail of the leaf1 block. */ STATIC void -xfs_dir2_leaf_log_tail( +xfs_dir3_leaf_log_tail( struct xfs_trans *tp, struct xfs_buf *bp) { - xfs_dir2_leaf_t *leaf; /* leaf structure */ + struct xfs_dir2_leaf *leaf = bp->b_addr; xfs_dir2_leaf_tail_t *ltp; /* leaf tail structure */ - xfs_mount_t *mp; /* filesystem mount point */ + struct xfs_mount *mp = tp->t_mountp; + + ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAF1_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) || + leaf->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)); - mp = tp->t_mountp; - leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)); ltp = xfs_dir2_leaf_tail_p(mp, leaf); xfs_trans_log_buf(tp, bp, (uint)((char *)ltp - (char *)leaf), (uint)(mp->m_dirblksize - 1)); @@ -1389,6 +1568,7 @@ xfs_dir2_leaf_lookup( xfs_dir2_leaf_t *leaf; /* leaf structure */ xfs_dir2_leaf_entry_t *lep; /* leaf entry */ xfs_trans_t *tp; /* transaction pointer */ + struct xfs_dir2_leaf_entry *ents; trace_xfs_dir2_leaf_lookup(args); @@ -1400,12 +1580,14 @@ xfs_dir2_leaf_lookup( } tp = args->trans; dp = args->dp; - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_check(dp->i_mount, lbp); leaf = lbp->b_addr; + ents = xfs_dir3_leaf_ents_p(leaf); /* * Get to the leaf entry and contained data entry address. */ - lep = &leaf->ents[index]; + lep = &ents[index]; + /* * Point to the data entry. */ @@ -1449,18 +1631,23 @@ xfs_dir2_leaf_lookup_int( xfs_trans_t *tp; /* transaction pointer */ xfs_dir2_db_t cidb = -1; /* case match data block no. */ enum xfs_dacmp cmp; /* name compare result */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; dp = args->dp; tp = args->trans; mp = dp->i_mount; - error = xfs_dir2_leaf_read(tp, dp, mp->m_dirleafblk, -1, &lbp); + error = xfs_dir3_leaf_read(tp, dp, mp->m_dirleafblk, -1, &lbp); if (error) return error; *lbpp = lbp; leaf = lbp->b_addr; - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_check(mp, lbp); + ents = xfs_dir3_leaf_ents_p(leaf); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + /* * Look for the first leaf entry with our hash value. */ @@ -1469,9 +1656,9 @@ xfs_dir2_leaf_lookup_int( * Loop over all the entries with the right hash value * looking to match the name. */ - for (lep = &leaf->ents[index]; index < be16_to_cpu(leaf->hdr.count) && - be32_to_cpu(lep->hashval) == args->hashval; - lep++, index++) { + for (lep = &ents[index]; + index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval; + lep++, index++) { /* * Skip over stale leaf entries. */ @@ -1576,6 +1763,8 @@ xfs_dir2_leaf_removename( xfs_dir2_data_off_t oldbest; /* old value of best free */ xfs_trans_t *tp; /* transaction pointer */ struct xfs_dir2_data_free *bf; /* bestfree table */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; trace_xfs_dir2_leaf_removename(args); @@ -1590,12 +1779,14 @@ xfs_dir2_leaf_removename( mp = dp->i_mount; leaf = lbp->b_addr; hdr = dbp->b_addr; - bf = xfs_dir3_data_bestfree_p(hdr); xfs_dir3_data_check(dp, dbp); + bf = xfs_dir3_data_bestfree_p(hdr); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); /* * Point to the leaf entry, use that to point to the data entry. */ - lep = &leaf->ents[index]; + lep = &ents[index]; db = xfs_dir2_dataptr_to_db(mp, be32_to_cpu(lep->address)); dep = (xfs_dir2_data_entry_t *) ((char *)hdr + xfs_dir2_dataptr_to_off(mp, be32_to_cpu(lep->address))); @@ -1613,10 +1804,13 @@ xfs_dir2_leaf_removename( /* * We just mark the leaf entry stale by putting a null in it. */ - be16_add_cpu(&leaf->hdr.stale, 1); - xfs_dir2_leaf_log_header(tp, lbp); + leafhdr.stale++; + xfs_dir3_leaf_hdr_to_disk(leaf, &leafhdr); + xfs_dir3_leaf_log_header(tp, lbp); + lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR); - xfs_dir2_leaf_log_ents(tp, lbp, index, index); + xfs_dir3_leaf_log_ents(tp, lbp, index, index); + /* * Scan the freespace in the data block again if necessary, * log the data block header if necessary. @@ -1631,7 +1825,7 @@ xfs_dir2_leaf_removename( */ if (be16_to_cpu(bf[0].length) != oldbest) { bestsp[db] = bf[0].length; - xfs_dir2_leaf_log_bests(tp, lbp, db, db); + xfs_dir3_leaf_log_bests(tp, lbp, db, db); } xfs_dir3_data_check(dp, dbp); /* @@ -1649,7 +1843,7 @@ xfs_dir2_leaf_removename( */ if (error == ENOSPC && args->total == 0) error = 0; - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_check(mp, lbp); return error; } dbp = NULL; @@ -1672,8 +1866,8 @@ xfs_dir2_leaf_removename( memmove(&bestsp[db - i], bestsp, (be32_to_cpu(ltp->bestcount) - (db - i)) * sizeof(*bestsp)); be32_add_cpu(<p->bestcount, -(db - i)); - xfs_dir2_leaf_log_tail(tp, lbp); - xfs_dir2_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); + xfs_dir3_leaf_log_tail(tp, lbp); + xfs_dir3_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); } else bestsp[db] = cpu_to_be16(NULLDATAOFF); } @@ -1683,7 +1877,7 @@ xfs_dir2_leaf_removename( else if (db != mp->m_dirdatablk) dbp = NULL; - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_check(mp, lbp); /* * See if we can convert to block form. */ @@ -1706,6 +1900,7 @@ xfs_dir2_leaf_replace( xfs_dir2_leaf_t *leaf; /* leaf structure */ xfs_dir2_leaf_entry_t *lep; /* leaf entry */ xfs_trans_t *tp; /* transaction pointer */ + struct xfs_dir2_leaf_entry *ents; trace_xfs_dir2_leaf_replace(args); @@ -1717,10 +1912,11 @@ xfs_dir2_leaf_replace( } dp = args->dp; leaf = lbp->b_addr; + ents = xfs_dir3_leaf_ents_p(leaf); /* * Point to the leaf entry, get data address from it. */ - lep = &leaf->ents[index]; + lep = &ents[index]; /* * Point to the data entry. */ @@ -1734,7 +1930,7 @@ xfs_dir2_leaf_replace( dep->inumber = cpu_to_be64(args->inumber); tp = args->trans; xfs_dir2_data_log_entry(tp, dbp, dep); - xfs_dir2_leaf_check(dp, lbp); + xfs_dir3_leaf_check(dp->i_mount, lbp); xfs_trans_brelse(tp, lbp); return 0; } @@ -1756,17 +1952,22 @@ xfs_dir2_leaf_search_hash( xfs_dir2_leaf_t *leaf; /* leaf structure */ xfs_dir2_leaf_entry_t *lep; /* leaf entry */ int mid=0; /* current leaf index */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; leaf = lbp->b_addr; + ents = xfs_dir3_leaf_ents_p(leaf); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + #ifndef __KERNEL__ - if (!leaf->hdr.count) + if (!leafhdr.count) return 0; #endif /* * Note, the table cannot be empty, so we have to go through the loop. * Binary search the leaf entries looking for our hash value. */ - for (lep = leaf->ents, low = 0, high = be16_to_cpu(leaf->hdr.count) - 1, + for (lep = ents, low = 0, high = leafhdr.count - 1, hashwant = args->hashval; low <= high; ) { mid = (low + high) >> 1; @@ -1852,23 +2053,29 @@ xfs_dir2_leaf_trim_data( bestsp = xfs_dir2_leaf_bests_p(ltp); be32_add_cpu(<p->bestcount, -1); memmove(&bestsp[1], &bestsp[0], be32_to_cpu(ltp->bestcount) * sizeof(*bestsp)); - xfs_dir2_leaf_log_tail(tp, lbp); - xfs_dir2_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); + xfs_dir3_leaf_log_tail(tp, lbp); + xfs_dir3_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); return 0; } static inline size_t -xfs_dir2_leaf_size( - struct xfs_dir2_leaf_hdr *hdr, +xfs_dir3_leaf_size( + struct xfs_dir3_icleaf_hdr *hdr, int counts) { - int entries; + int entries; + int hdrsize; + + entries = hdr->count - hdr->stale; + if (hdr->magic == XFS_DIR2_LEAF1_MAGIC || + hdr->magic == XFS_DIR2_LEAFN_MAGIC) + hdrsize = sizeof(struct xfs_dir2_leaf_hdr); + else + hdrsize = sizeof(struct xfs_dir3_leaf_hdr); - entries = be16_to_cpu(hdr->count) - be16_to_cpu(hdr->stale); - return sizeof(xfs_dir2_leaf_hdr_t) + - entries * sizeof(xfs_dir2_leaf_entry_t) + - counts * sizeof(xfs_dir2_data_off_t) + - sizeof(xfs_dir2_leaf_tail_t); + return hdrsize + entries * sizeof(xfs_dir2_leaf_entry_t) + + counts * sizeof(xfs_dir2_data_off_t) + + sizeof(xfs_dir2_leaf_tail_t); } /* @@ -1892,6 +2099,7 @@ xfs_dir2_node_to_leaf( xfs_mount_t *mp; /* filesystem mount point */ int rval; /* successful free trim? */ xfs_trans_t *tp; /* transaction pointer */ + struct xfs_dir3_icleaf_hdr leafhdr; struct xfs_dir3_icfree_hdr freehdr; /* @@ -1942,7 +2150,11 @@ xfs_dir2_node_to_leaf( return 0; lbp = state->path.blk[0].bp; leaf = lbp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + + ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC || + leafhdr.magic == XFS_DIR3_LEAFN_MAGIC); + /* * Read the freespace block. */ @@ -1958,36 +2170,40 @@ xfs_dir2_node_to_leaf( * Now see if the leafn and free data will fit in a leaf1. * If not, release the buffer and give up. */ - if (xfs_dir2_leaf_size(&leaf->hdr, freehdr.nvalid) > mp->m_dirblksize) { + if (xfs_dir3_leaf_size(&leafhdr, freehdr.nvalid) > mp->m_dirblksize) { xfs_trans_brelse(tp, fbp); return 0; } /* * If the leaf has any stale entries in it, compress them out. - * The compact routine will log the header. */ - if (be16_to_cpu(leaf->hdr.stale)) - xfs_dir2_leaf_compact(args, lbp); - else - xfs_dir2_leaf_log_header(tp, lbp); + if (leafhdr.stale) + xfs_dir3_leaf_compact(args, &leafhdr, lbp); - lbp->b_ops = &xfs_dir2_leaf1_buf_ops; - leaf->hdr.info.magic = cpu_to_be16(XFS_DIR2_LEAF1_MAGIC); + lbp->b_ops = &xfs_dir3_leaf1_buf_ops; + leafhdr.magic = (leafhdr.magic == XFS_DIR2_LEAFN_MAGIC) + ? XFS_DIR2_LEAF1_MAGIC + : XFS_DIR3_LEAF1_MAGIC; /* * Set up the leaf tail from the freespace block. */ ltp = xfs_dir2_leaf_tail_p(mp, leaf); ltp->bestcount = cpu_to_be32(freehdr.nvalid); + /* * Set up the leaf bests table. */ memcpy(xfs_dir2_leaf_bests_p(ltp), xfs_dir3_free_bests_p(mp, free), freehdr.nvalid * sizeof(xfs_dir2_data_off_t)); - xfs_dir2_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); - xfs_dir2_leaf_log_tail(tp, lbp); - xfs_dir2_leaf_check(dp, lbp); + + xfs_dir3_leaf_hdr_to_disk(leaf, &leafhdr); + xfs_dir3_leaf_log_header(tp, lbp); + xfs_dir3_leaf_log_bests(tp, lbp, 0, be32_to_cpu(ltp->bestcount) - 1); + xfs_dir3_leaf_log_tail(tp, lbp); + xfs_dir3_leaf_check(mp, lbp); + /* * Get rid of the freespace block. */ diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index abf617d5060b..baaf9d96e354 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -41,14 +41,6 @@ */ static int xfs_dir2_leafn_add(struct xfs_buf *bp, xfs_da_args_t *args, int index); -#ifdef DEBUG -static void xfs_dir2_leafn_check(struct xfs_inode *dp, struct xfs_buf *bp); -#else -#define xfs_dir2_leafn_check(dp, bp) -#endif -static void xfs_dir2_leafn_moveents(xfs_da_args_t *args, struct xfs_buf *bp_s, - int start_s, struct xfs_buf *bp_d, - int start_d, int count); static void xfs_dir2_leafn_rebalance(xfs_da_state_t *state, xfs_da_state_blk_t *blk1, xfs_da_state_blk_t *blk2); @@ -58,6 +50,39 @@ static int xfs_dir2_leafn_remove(xfs_da_args_t *args, struct xfs_buf *bp, static int xfs_dir2_node_addname_int(xfs_da_args_t *args, xfs_da_state_blk_t *fblk); +/* + * Check internal consistency of a leafn block. + */ +#ifdef DEBUG +#define xfs_dir3_leaf_check(mp, bp) \ +do { \ + if (!xfs_dir3_leafn_check((mp), (bp))) \ + ASSERT(0); \ +} while (0); + +static bool +xfs_dir3_leafn_check( + struct xfs_mount *mp, + struct xfs_buf *bp) +{ + struct xfs_dir2_leaf *leaf = bp->b_addr; + struct xfs_dir3_icleaf_hdr leafhdr; + + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + + if (leafhdr.magic == XFS_DIR3_LEAFN_MAGIC) { + struct xfs_dir3_leaf_hdr *leaf3 = bp->b_addr; + if (be64_to_cpu(leaf3->info.blkno) != bp->b_bn) + return false; + } else if (leafhdr.magic != XFS_DIR2_LEAFN_MAGIC) + return false; + + return xfs_dir3_leaf_check_int(mp, &leafhdr, leaf); +} +#else +#define xfs_dir3_leaf_check(mp, bp) +#endif + static bool xfs_dir3_free_verify( struct xfs_buf *bp) @@ -360,11 +385,19 @@ xfs_dir2_leaf_to_node( xfs_dir2_free_log_bests(tp, fbp, 0, freehdr.nvalid - 1); xfs_dir2_free_log_header(tp, fbp); - /* convert the leaf to a leafnode */ - leaf->hdr.info.magic = cpu_to_be16(XFS_DIR2_LEAFN_MAGIC); - lbp->b_ops = &xfs_dir2_leafn_buf_ops; - xfs_dir2_leaf_log_header(tp, lbp); - xfs_dir2_leafn_check(dp, lbp); + /* + * Converting the leaf to a leafnode is just a matter of changing the + * magic number and the ops. Do the change directly to the buffer as + * it's less work (and less code) than decoding the header to host + * format and back again. + */ + if (leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAF1_MAGIC)) + leaf->hdr.info.magic = cpu_to_be16(XFS_DIR2_LEAFN_MAGIC); + else + leaf->hdr.info.magic = cpu_to_be16(XFS_DIR3_LEAFN_MAGIC); + lbp->b_ops = &xfs_dir3_leafn_buf_ops; + xfs_dir3_leaf_log_header(tp, lbp); + xfs_dir3_leaf_check(mp, lbp); return 0; } @@ -388,6 +421,8 @@ xfs_dir2_leafn_add( int lowstale; /* previous stale entry */ xfs_mount_t *mp; /* filesystem mount point */ xfs_trans_t *tp; /* transaction pointer */ + struct xfs_dir3_icleaf_hdr leafhdr; + struct xfs_dir2_leaf_entry *ents; trace_xfs_dir2_leafn_add(args, index); @@ -395,6 +430,8 @@ xfs_dir2_leafn_add( mp = dp->i_mount; tp = args->trans; leaf = bp->b_addr; + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); /* * Quick check just to make sure we are not going to index @@ -410,15 +447,15 @@ xfs_dir2_leafn_add( * a compact. */ - if (be16_to_cpu(leaf->hdr.count) == xfs_dir2_max_leaf_ents(mp)) { - if (!leaf->hdr.stale) + if (leafhdr.count == xfs_dir3_max_leaf_ents(mp, leaf)) { + if (!leafhdr.stale) return XFS_ERROR(ENOSPC); - compact = be16_to_cpu(leaf->hdr.stale) > 1; + compact = leafhdr.stale > 1; } else compact = 0; - ASSERT(index == 0 || be32_to_cpu(leaf->ents[index - 1].hashval) <= args->hashval); - ASSERT(index == be16_to_cpu(leaf->hdr.count) || - be32_to_cpu(leaf->ents[index].hashval) >= args->hashval); + ASSERT(index == 0 || be32_to_cpu(ents[index - 1].hashval) <= args->hashval); + ASSERT(index == leafhdr.count || + be32_to_cpu(ents[index].hashval) >= args->hashval); if (args->op_flags & XFS_DA_OP_JUSTCHECK) return 0; @@ -427,62 +464,35 @@ xfs_dir2_leafn_add( * Compact out all but one stale leaf entry. Leaves behind * the entry closest to index. */ - if (compact) { - xfs_dir2_leaf_compact_x1(bp, &index, &lowstale, &highstale, - &lfloglow, &lfloghigh); - } - /* - * Set impossible logging indices for this case. - */ - else if (leaf->hdr.stale) { - lfloglow = be16_to_cpu(leaf->hdr.count); + if (compact) + xfs_dir3_leaf_compact_x1(&leafhdr, ents, &index, &lowstale, + &highstale, &lfloglow, &lfloghigh); + else if (leafhdr.stale) { + /* + * Set impossible logging indices for this case. + */ + lfloglow = leafhdr.count; lfloghigh = -1; } /* * Insert the new entry, log everything. */ - lep = xfs_dir2_leaf_find_entry(leaf, index, compact, lowstale, + lep = xfs_dir3_leaf_find_entry(&leafhdr, ents, index, compact, lowstale, highstale, &lfloglow, &lfloghigh); lep->hashval = cpu_to_be32(args->hashval); lep->address = cpu_to_be32(xfs_dir2_db_off_to_dataptr(mp, args->blkno, args->index)); - xfs_dir2_leaf_log_header(tp, bp); - xfs_dir2_leaf_log_ents(tp, bp, lfloglow, lfloghigh); - xfs_dir2_leafn_check(dp, bp); + + xfs_dir3_leaf_hdr_to_disk(leaf, &leafhdr); + xfs_dir3_leaf_log_header(tp, bp); + xfs_dir3_leaf_log_ents(tp, bp, lfloglow, lfloghigh); + xfs_dir3_leaf_check(mp, bp); return 0; } #ifdef DEBUG -/* - * Check internal consistency of a leafn block. - */ -void -xfs_dir2_leafn_check( - struct xfs_inode *dp, - struct xfs_buf *bp) -{ - int i; /* leaf index */ - xfs_dir2_leaf_t *leaf; /* leaf structure */ - xfs_mount_t *mp; /* filesystem mount point */ - int stale; /* count of stale leaves */ - - leaf = bp->b_addr; - mp = dp->i_mount; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - ASSERT(be16_to_cpu(leaf->hdr.count) <= xfs_dir2_max_leaf_ents(mp)); - for (i = stale = 0; i < be16_to_cpu(leaf->hdr.count); i++) { - if (i + 1 < be16_to_cpu(leaf->hdr.count)) { - ASSERT(be32_to_cpu(leaf->ents[i].hashval) <= - be32_to_cpu(leaf->ents[i + 1].hashval)); - } - if (leaf->ents[i].address == cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) - stale++; - } - ASSERT(be16_to_cpu(leaf->hdr.stale) == stale); -} - static void xfs_dir2_free_hdr_check( struct xfs_mount *mp, @@ -510,15 +520,22 @@ xfs_dir2_leafn_lasthash( struct xfs_buf *bp, /* leaf buffer */ int *count) /* count of entries in leaf */ { - xfs_dir2_leaf_t *leaf; /* leaf structure */ + struct xfs_dir2_leaf *leaf = bp->b_addr; + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; + + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + + ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC || + leafhdr.magic == XFS_DIR3_LEAFN_MAGIC); - leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); if (count) - *count = be16_to_cpu(leaf->hdr.count); - if (!leaf->hdr.count) + *count = leafhdr.count; + if (!leafhdr.count) return 0; - return be32_to_cpu(leaf->ents[be16_to_cpu(leaf->hdr.count) - 1].hashval); + + ents = xfs_dir3_leaf_ents_p(leaf); + return be32_to_cpu(ents[leafhdr.count - 1].hashval); } /* @@ -547,16 +564,19 @@ xfs_dir2_leafn_lookup_for_addname( xfs_dir2_db_t newdb; /* new data block number */ xfs_dir2_db_t newfdb; /* new free block number */ xfs_trans_t *tp; /* transaction pointer */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; dp = args->dp; tp = args->trans; mp = dp->i_mount; leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); -#ifdef __KERNEL__ - ASSERT(be16_to_cpu(leaf->hdr.count) > 0); -#endif - xfs_dir2_leafn_check(dp, bp); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + + xfs_dir3_leaf_check(mp, bp); + ASSERT(leafhdr.count > 0); + /* * Look up the hash value in the leaf entries. */ @@ -576,9 +596,9 @@ xfs_dir2_leafn_lookup_for_addname( /* * Loop over leaf entries with the right hash value. */ - for (lep = &leaf->ents[index]; index < be16_to_cpu(leaf->hdr.count) && - be32_to_cpu(lep->hashval) == args->hashval; - lep++, index++) { + for (lep = &ents[index]; + index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval; + lep++, index++) { /* * Skip stale leaf entries. */ @@ -694,16 +714,19 @@ xfs_dir2_leafn_lookup_for_entry( xfs_dir2_db_t newdb; /* new data block number */ xfs_trans_t *tp; /* transaction pointer */ enum xfs_dacmp cmp; /* comparison result */ + struct xfs_dir2_leaf_entry *ents; + struct xfs_dir3_icleaf_hdr leafhdr; dp = args->dp; tp = args->trans; mp = dp->i_mount; leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); -#ifdef __KERNEL__ - ASSERT(be16_to_cpu(leaf->hdr.count) > 0); -#endif - xfs_dir2_leafn_check(dp, bp); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + + xfs_dir3_leaf_check(mp, bp); + ASSERT(leafhdr.count > 0); + /* * Look up the hash value in the leaf entries. */ @@ -718,9 +741,9 @@ xfs_dir2_leafn_lookup_for_entry( /* * Loop over leaf entries with the right hash value. */ - for (lep = &leaf->ents[index]; index < be16_to_cpu(leaf->hdr.count) && - be32_to_cpu(lep->hashval) == args->hashval; - lep++, index++) { + for (lep = &ents[index]; + index < leafhdr.count && be32_to_cpu(lep->hashval) == args->hashval; + lep++, index++) { /* * Skip stale leaf entries. */ @@ -792,8 +815,7 @@ xfs_dir2_leafn_lookup_for_entry( return XFS_ERROR(EEXIST); } } - ASSERT(index == be16_to_cpu(leaf->hdr.count) || - (args->op_flags & XFS_DA_OP_OKNOENT)); + ASSERT(index == leafhdr.count || (args->op_flags & XFS_DA_OP_OKNOENT)); if (curbp) { if (args->cmpresult == XFS_CMP_DIFFERENT) { /* Giving back last used data block. */ @@ -838,52 +860,50 @@ xfs_dir2_leafn_lookup_int( * Log entries and headers. Stale entries are preserved. */ static void -xfs_dir2_leafn_moveents( - xfs_da_args_t *args, /* operation arguments */ - struct xfs_buf *bp_s, /* source leaf buffer */ - int start_s, /* source leaf index */ - struct xfs_buf *bp_d, /* destination leaf buffer */ - int start_d, /* destination leaf index */ - int count) /* count of leaves to copy */ +xfs_dir3_leafn_moveents( + xfs_da_args_t *args, /* operation arguments */ + struct xfs_buf *bp_s, /* source */ + struct xfs_dir3_icleaf_hdr *shdr, + struct xfs_dir2_leaf_entry *sents, + int start_s,/* source leaf index */ + struct xfs_buf *bp_d, /* destination */ + struct xfs_dir3_icleaf_hdr *dhdr, + struct xfs_dir2_leaf_entry *dents, + int start_d,/* destination leaf index */ + int count) /* count of leaves to copy */ { - xfs_dir2_leaf_t *leaf_d; /* destination leaf structure */ - xfs_dir2_leaf_t *leaf_s; /* source leaf structure */ - int stale; /* count stale leaves copied */ - xfs_trans_t *tp; /* transaction pointer */ + struct xfs_trans *tp = args->trans; + int stale; /* count stale leaves copied */ trace_xfs_dir2_leafn_moveents(args, start_s, start_d, count); /* * Silently return if nothing to do. */ - if (count == 0) { + if (count == 0) return; - } - tp = args->trans; - leaf_s = bp_s->b_addr; - leaf_d = bp_d->b_addr; + /* * If the destination index is not the end of the current * destination leaf entries, open up a hole in the destination * to hold the new entries. */ - if (start_d < be16_to_cpu(leaf_d->hdr.count)) { - memmove(&leaf_d->ents[start_d + count], &leaf_d->ents[start_d], - (be16_to_cpu(leaf_d->hdr.count) - start_d) * - sizeof(xfs_dir2_leaf_entry_t)); - xfs_dir2_leaf_log_ents(tp, bp_d, start_d + count, - count + be16_to_cpu(leaf_d->hdr.count) - 1); + if (start_d < dhdr->count) { + memmove(&dents[start_d + count], &dents[start_d], + (dhdr->count - start_d) * sizeof(xfs_dir2_leaf_entry_t)); + xfs_dir3_leaf_log_ents(tp, bp_d, start_d + count, + count + dhdr->count - 1); } /* * If the source has stale leaves, count the ones in the copy range * so we can update the header correctly. */ - if (leaf_s->hdr.stale) { + if (shdr->stale) { int i; /* temp leaf index */ for (i = start_s, stale = 0; i < start_s + count; i++) { - if (leaf_s->ents[i].address == - cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) + if (sents[i].address == + cpu_to_be32(XFS_DIR2_NULL_DATAPTR)) stale++; } } else @@ -891,29 +911,27 @@ xfs_dir2_leafn_moveents( /* * Copy the leaf entries from source to destination. */ - memcpy(&leaf_d->ents[start_d], &leaf_s->ents[start_s], + memcpy(&dents[start_d], &sents[start_s], count * sizeof(xfs_dir2_leaf_entry_t)); - xfs_dir2_leaf_log_ents(tp, bp_d, start_d, start_d + count - 1); + xfs_dir3_leaf_log_ents(tp, bp_d, start_d, start_d + count - 1); + /* * If there are source entries after the ones we copied, * delete the ones we copied by sliding the next ones down. */ - if (start_s + count < be16_to_cpu(leaf_s->hdr.count)) { - memmove(&leaf_s->ents[start_s], &leaf_s->ents[start_s + count], + if (start_s + count < shdr->count) { + memmove(&sents[start_s], &sents[start_s + count], count * sizeof(xfs_dir2_leaf_entry_t)); - xfs_dir2_leaf_log_ents(tp, bp_s, start_s, start_s + count - 1); + xfs_dir3_leaf_log_ents(tp, bp_s, start_s, start_s + count - 1); } + /* * Update the headers and log them. */ - be16_add_cpu(&leaf_s->hdr.count, -(count)); - be16_add_cpu(&leaf_s->hdr.stale, -(stale)); - be16_add_cpu(&leaf_d->hdr.count, count); - be16_add_cpu(&leaf_d->hdr.stale, stale); - xfs_dir2_leaf_log_header(tp, bp_s); - xfs_dir2_leaf_log_header(tp, bp_d); - xfs_dir2_leafn_check(args->dp, bp_s); - xfs_dir2_leafn_check(args->dp, bp_d); + shdr->count -= count; + shdr->stale -= stale; + dhdr->count += count; + dhdr->stale += stale; } /* @@ -922,21 +940,25 @@ xfs_dir2_leafn_moveents( */ int /* sort order */ xfs_dir2_leafn_order( - struct xfs_buf *leaf1_bp, /* leaf1 buffer */ - struct xfs_buf *leaf2_bp) /* leaf2 buffer */ + struct xfs_buf *leaf1_bp, /* leaf1 buffer */ + struct xfs_buf *leaf2_bp) /* leaf2 buffer */ { - xfs_dir2_leaf_t *leaf1; /* leaf1 structure */ - xfs_dir2_leaf_t *leaf2; /* leaf2 structure */ - - leaf1 = leaf1_bp->b_addr; - leaf2 = leaf2_bp->b_addr; - ASSERT(leaf1->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - ASSERT(leaf2->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - if (be16_to_cpu(leaf1->hdr.count) > 0 && - be16_to_cpu(leaf2->hdr.count) > 0 && - (be32_to_cpu(leaf2->ents[0].hashval) < be32_to_cpu(leaf1->ents[0].hashval) || - be32_to_cpu(leaf2->ents[be16_to_cpu(leaf2->hdr.count) - 1].hashval) < - be32_to_cpu(leaf1->ents[be16_to_cpu(leaf1->hdr.count) - 1].hashval))) + struct xfs_dir2_leaf *leaf1 = leaf1_bp->b_addr; + struct xfs_dir2_leaf *leaf2 = leaf2_bp->b_addr; + struct xfs_dir2_leaf_entry *ents1; + struct xfs_dir2_leaf_entry *ents2; + struct xfs_dir3_icleaf_hdr hdr1; + struct xfs_dir3_icleaf_hdr hdr2; + + xfs_dir3_leaf_hdr_from_disk(&hdr1, leaf1); + xfs_dir3_leaf_hdr_from_disk(&hdr2, leaf2); + ents1 = xfs_dir3_leaf_ents_p(leaf1); + ents2 = xfs_dir3_leaf_ents_p(leaf2); + + if (hdr1.count > 0 && hdr2.count > 0 && + (be32_to_cpu(ents2[0].hashval) < be32_to_cpu(ents1[0].hashval) || + be32_to_cpu(ents2[hdr2.count - 1].hashval) < + be32_to_cpu(ents1[hdr1.count - 1].hashval))) return 1; return 0; } @@ -965,6 +987,10 @@ xfs_dir2_leafn_rebalance( #endif int oldsum; /* old total leaf count */ int swap; /* swapped leaf blocks */ + struct xfs_dir2_leaf_entry *ents1; + struct xfs_dir2_leaf_entry *ents2; + struct xfs_dir3_icleaf_hdr hdr1; + struct xfs_dir3_icleaf_hdr hdr2; args = state->args; /* @@ -979,11 +1005,17 @@ xfs_dir2_leafn_rebalance( } leaf1 = blk1->bp->b_addr; leaf2 = blk2->bp->b_addr; - oldsum = be16_to_cpu(leaf1->hdr.count) + be16_to_cpu(leaf2->hdr.count); + xfs_dir3_leaf_hdr_from_disk(&hdr1, leaf1); + xfs_dir3_leaf_hdr_from_disk(&hdr2, leaf2); + ents1 = xfs_dir3_leaf_ents_p(leaf1); + ents2 = xfs_dir3_leaf_ents_p(leaf2); + + oldsum = hdr1.count + hdr2.count; #ifdef DEBUG - oldstale = be16_to_cpu(leaf1->hdr.stale) + be16_to_cpu(leaf2->hdr.stale); + oldstale = hdr1.stale + hdr2.stale; #endif mid = oldsum >> 1; + /* * If the old leaf count was odd then the new one will be even, * so we need to divide the new count evenly. @@ -991,10 +1023,10 @@ xfs_dir2_leafn_rebalance( if (oldsum & 1) { xfs_dahash_t midhash; /* middle entry hash value */ - if (mid >= be16_to_cpu(leaf1->hdr.count)) - midhash = be32_to_cpu(leaf2->ents[mid - be16_to_cpu(leaf1->hdr.count)].hashval); + if (mid >= hdr1.count) + midhash = be32_to_cpu(ents2[mid - hdr1.count].hashval); else - midhash = be32_to_cpu(leaf1->ents[mid].hashval); + midhash = be32_to_cpu(ents1[mid].hashval); isleft = args->hashval <= midhash; } /* @@ -1008,30 +1040,42 @@ xfs_dir2_leafn_rebalance( * Calculate moved entry count. Positive means left-to-right, * negative means right-to-left. Then move the entries. */ - count = be16_to_cpu(leaf1->hdr.count) - mid + (isleft == 0); + count = hdr1.count - mid + (isleft == 0); if (count > 0) - xfs_dir2_leafn_moveents(args, blk1->bp, - be16_to_cpu(leaf1->hdr.count) - count, blk2->bp, 0, count); + xfs_dir3_leafn_moveents(args, blk1->bp, &hdr1, ents1, + hdr1.count - count, blk2->bp, + &hdr2, ents2, 0, count); else if (count < 0) - xfs_dir2_leafn_moveents(args, blk2->bp, 0, blk1->bp, - be16_to_cpu(leaf1->hdr.count), count); - ASSERT(be16_to_cpu(leaf1->hdr.count) + be16_to_cpu(leaf2->hdr.count) == oldsum); - ASSERT(be16_to_cpu(leaf1->hdr.stale) + be16_to_cpu(leaf2->hdr.stale) == oldstale); + xfs_dir3_leafn_moveents(args, blk2->bp, &hdr2, ents2, 0, + blk1->bp, &hdr1, ents1, + hdr1.count, count); + + ASSERT(hdr1.count + hdr2.count == oldsum); + ASSERT(hdr1.stale + hdr2.stale == oldstale); + + /* log the changes made when moving the entries */ + xfs_dir3_leaf_hdr_to_disk(leaf1, &hdr1); + xfs_dir3_leaf_hdr_to_disk(leaf2, &hdr2); + xfs_dir3_leaf_log_header(args->trans, blk1->bp); + xfs_dir3_leaf_log_header(args->trans, blk2->bp); + + xfs_dir3_leaf_check(args->dp->i_mount, blk1->bp); + xfs_dir3_leaf_check(args->dp->i_mount, blk2->bp); + /* * Mark whether we're inserting into the old or new leaf. */ - if (be16_to_cpu(leaf1->hdr.count) < be16_to_cpu(leaf2->hdr.count)) + if (hdr1.count < hdr2.count) state->inleaf = swap; - else if (be16_to_cpu(leaf1->hdr.count) > be16_to_cpu(leaf2->hdr.count)) + else if (hdr1.count > hdr2.count) state->inleaf = !swap; else - state->inleaf = - swap ^ (blk1->index <= be16_to_cpu(leaf1->hdr.count)); + state->inleaf = swap ^ (blk1->index <= hdr1.count); /* * Adjust the expected index for insertion. */ if (!state->inleaf) - blk2->index = blk1->index - be16_to_cpu(leaf1->hdr.count); + blk2->index = blk1->index - hdr1.count; /* * Finally sanity check just to make sure we are not returning a @@ -1153,6 +1197,8 @@ xfs_dir2_leafn_remove( int needscan; /* need to rescan data frees */ xfs_trans_t *tp; /* transaction pointer */ struct xfs_dir2_data_free *bf; /* bestfree table */ + struct xfs_dir3_icleaf_hdr leafhdr; + struct xfs_dir2_leaf_entry *ents; trace_xfs_dir2_leafn_remove(args, index); @@ -1160,11 +1206,14 @@ xfs_dir2_leafn_remove( tp = args->trans; mp = dp->i_mount; leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + /* * Point to the entry we're removing. */ - lep = &leaf->ents[index]; + lep = &ents[index]; + /* * Extract the data block and offset from the entry. */ @@ -1172,14 +1221,18 @@ xfs_dir2_leafn_remove( ASSERT(dblk->blkno == db); off = xfs_dir2_dataptr_to_off(mp, be32_to_cpu(lep->address)); ASSERT(dblk->index == off); + /* * Kill the leaf entry by marking it stale. * Log the leaf block changes. */ - be16_add_cpu(&leaf->hdr.stale, 1); - xfs_dir2_leaf_log_header(tp, bp); + leafhdr.stale++; + xfs_dir3_leaf_hdr_to_disk(leaf, &leafhdr); + xfs_dir3_leaf_log_header(tp, bp); + lep->address = cpu_to_be32(XFS_DIR2_NULL_DATAPTR); - xfs_dir2_leaf_log_ents(tp, bp, index, index); + xfs_dir3_leaf_log_ents(tp, bp, index, index); + /* * Make the data entry free. Keep track of the longest freespace * in the data block in case it changes. @@ -1267,15 +1320,13 @@ xfs_dir2_leafn_remove( return error; } - xfs_dir2_leafn_check(dp, bp); + xfs_dir3_leaf_check(mp, bp); /* * Return indication of whether this leaf block is empty enough * to justify trying to join it with a neighbor. */ - *rval = - ((uint)sizeof(leaf->hdr) + - (uint)sizeof(leaf->ents[0]) * - (be16_to_cpu(leaf->hdr.count) - be16_to_cpu(leaf->hdr.stale))) < + *rval = (xfs_dir3_leaf_hdr_size(leaf) + + (uint)sizeof(ents[0]) * (leafhdr.count - leafhdr.stale)) < mp->m_dir_magicpct; return 0; } @@ -1308,11 +1359,11 @@ xfs_dir2_leafn_split( /* * Initialize the new leaf block. */ - error = xfs_dir2_leaf_init(args, xfs_dir2_da_to_db(mp, blkno), - &newblk->bp, XFS_DIR2_LEAFN_MAGIC); - if (error) { + error = xfs_dir3_leaf_get_buf(args, xfs_dir2_da_to_db(mp, blkno), + &newblk->bp, XFS_DIR2_LEAFN_MAGIC); + if (error) return error; - } + newblk->blkno = blkno; newblk->magic = XFS_DIR2_LEAFN_MAGIC; /* @@ -1336,8 +1387,8 @@ xfs_dir2_leafn_split( */ oldblk->hashval = xfs_dir2_leafn_lasthash(oldblk->bp, NULL); newblk->hashval = xfs_dir2_leafn_lasthash(newblk->bp, NULL); - xfs_dir2_leafn_check(args->dp, oldblk->bp); - xfs_dir2_leafn_check(args->dp, newblk->bp); + xfs_dir3_leaf_check(mp, oldblk->bp); + xfs_dir3_leaf_check(mp, newblk->bp); return error; } @@ -1363,9 +1414,10 @@ xfs_dir2_leafn_toosmall( int error; /* error return value */ int forward; /* sibling block direction */ int i; /* sibling counter */ - xfs_da_blkinfo_t *info; /* leaf block header */ xfs_dir2_leaf_t *leaf; /* leaf structure */ int rval; /* result from path_shift */ + struct xfs_dir3_icleaf_hdr leafhdr; + struct xfs_dir2_leaf_entry *ents; /* * Check for the degenerate case of the block being over 50% full. @@ -1373,11 +1425,13 @@ xfs_dir2_leafn_toosmall( * to coalesce with a sibling. */ blk = &state->path.blk[state->path.active - 1]; - info = blk->bp->b_addr; - ASSERT(info->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - leaf = (xfs_dir2_leaf_t *)info; - count = be16_to_cpu(leaf->hdr.count) - be16_to_cpu(leaf->hdr.stale); - bytes = (uint)sizeof(leaf->hdr) + count * (uint)sizeof(leaf->ents[0]); + leaf = blk->bp->b_addr; + xfs_dir3_leaf_hdr_from_disk(&leafhdr, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + xfs_dir3_leaf_check(state->args->dp->i_mount, blk->bp); + + count = leafhdr.count - leafhdr.stale; + bytes = xfs_dir3_leaf_hdr_size(leaf) + count * sizeof(ents[0]); if (bytes > (state->blocksize >> 1)) { /* * Blk over 50%, don't try to join. @@ -1396,7 +1450,7 @@ xfs_dir2_leafn_toosmall( * Make altpath point to the block we want to keep and * path point to the block we want to drop (this one). */ - forward = (info->forw != 0); + forward = (leafhdr.forw != 0); memcpy(&state->altpath, &state->path, sizeof(state->path)); error = xfs_da_path_shift(state, &state->altpath, forward, 0, &rval); @@ -1412,15 +1466,17 @@ xfs_dir2_leafn_toosmall( * We prefer coalescing with the lower numbered sibling so as * to shrink a directory over time. */ - forward = be32_to_cpu(info->forw) < be32_to_cpu(info->back); + forward = leafhdr.forw < leafhdr.back; for (i = 0, bp = NULL; i < 2; forward = !forward, i++) { - blkno = forward ? be32_to_cpu(info->forw) : be32_to_cpu(info->back); + struct xfs_dir3_icleaf_hdr hdr2; + + blkno = forward ? leafhdr.forw : leafhdr.back; if (blkno == 0) continue; /* * Read the sibling leaf block. */ - error = xfs_dir2_leafn_read(state->args->trans, state->args->dp, + error = xfs_dir3_leafn_read(state->args->trans, state->args->dp, blkno, -1, &bp); if (error) return error; @@ -1428,13 +1484,15 @@ xfs_dir2_leafn_toosmall( /* * Count bytes in the two blocks combined. */ - leaf = (xfs_dir2_leaf_t *)info; - count = be16_to_cpu(leaf->hdr.count) - be16_to_cpu(leaf->hdr.stale); + count = leafhdr.count - leafhdr.stale; bytes = state->blocksize - (state->blocksize >> 2); + leaf = bp->b_addr; - ASSERT(leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - count += be16_to_cpu(leaf->hdr.count) - be16_to_cpu(leaf->hdr.stale); - bytes -= count * (uint)sizeof(leaf->ents[0]); + xfs_dir3_leaf_hdr_from_disk(&hdr2, leaf); + ents = xfs_dir3_leaf_ents_p(leaf); + count += hdr2.count - hdr2.stale; + bytes -= count * sizeof(ents[0]); + /* * Fits with at least 25% to spare. */ @@ -1481,34 +1539,53 @@ xfs_dir2_leafn_unbalance( xfs_da_args_t *args; /* operation arguments */ xfs_dir2_leaf_t *drop_leaf; /* dead leaf structure */ xfs_dir2_leaf_t *save_leaf; /* surviving leaf structure */ + struct xfs_dir3_icleaf_hdr savehdr; + struct xfs_dir3_icleaf_hdr drophdr; + struct xfs_dir2_leaf_entry *sents; + struct xfs_dir2_leaf_entry *dents; args = state->args; ASSERT(drop_blk->magic == XFS_DIR2_LEAFN_MAGIC); ASSERT(save_blk->magic == XFS_DIR2_LEAFN_MAGIC); drop_leaf = drop_blk->bp->b_addr; save_leaf = save_blk->bp->b_addr; - ASSERT(drop_leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); - ASSERT(save_leaf->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC)); + + xfs_dir3_leaf_hdr_from_disk(&savehdr, save_leaf); + xfs_dir3_leaf_hdr_from_disk(&drophdr, drop_leaf); + sents = xfs_dir3_leaf_ents_p(save_leaf); + dents = xfs_dir3_leaf_ents_p(drop_leaf); + /* * If there are any stale leaf entries, take this opportunity * to purge them. */ - if (drop_leaf->hdr.stale) - xfs_dir2_leaf_compact(args, drop_blk->bp); - if (save_leaf->hdr.stale) - xfs_dir2_leaf_compact(args, save_blk->bp); + if (drophdr.stale) + xfs_dir3_leaf_compact(args, &drophdr, drop_blk->bp); + if (savehdr.stale) + xfs_dir3_leaf_compact(args, &savehdr, save_blk->bp); + /* * Move the entries from drop to the appropriate end of save. */ - drop_blk->hashval = be32_to_cpu(drop_leaf->ents[be16_to_cpu(drop_leaf->hdr.count) - 1].hashval); + drop_blk->hashval = be32_to_cpu(dents[drophdr.count - 1].hashval); if (xfs_dir2_leafn_order(save_blk->bp, drop_blk->bp)) - xfs_dir2_leafn_moveents(args, drop_blk->bp, 0, save_blk->bp, 0, - be16_to_cpu(drop_leaf->hdr.count)); + xfs_dir3_leafn_moveents(args, drop_blk->bp, &drophdr, dents, 0, + save_blk->bp, &savehdr, sents, 0, + drophdr.count); else - xfs_dir2_leafn_moveents(args, drop_blk->bp, 0, save_blk->bp, - be16_to_cpu(save_leaf->hdr.count), be16_to_cpu(drop_leaf->hdr.count)); - save_blk->hashval = be32_to_cpu(save_leaf->ents[be16_to_cpu(save_leaf->hdr.count) - 1].hashval); - xfs_dir2_leafn_check(args->dp, save_blk->bp); + xfs_dir3_leafn_moveents(args, drop_blk->bp, &drophdr, dents, 0, + save_blk->bp, &savehdr, sents, + savehdr.count, drophdr.count); + save_blk->hashval = be32_to_cpu(sents[savehdr.count - 1].hashval); + + /* log the changes made when moving the entries */ + xfs_dir3_leaf_hdr_to_disk(save_leaf, &savehdr); + xfs_dir3_leaf_hdr_to_disk(drop_leaf, &drophdr); + xfs_dir3_leaf_log_header(args->trans, save_blk->bp); + xfs_dir3_leaf_log_header(args->trans, drop_blk->bp); + + xfs_dir3_leaf_check(args->dp->i_mount, save_blk->bp); + xfs_dir3_leaf_check(args->dp->i_mount, drop_blk->bp); } /* @@ -2113,13 +2190,15 @@ xfs_dir2_node_replace( * and locked it. But paranoia is good. */ if (rval == EEXIST) { + struct xfs_dir2_leaf_entry *ents; /* * Find the leaf entry. */ blk = &state->path.blk[state->path.active - 1]; ASSERT(blk->magic == XFS_DIR2_LEAFN_MAGIC); leaf = blk->bp->b_addr; - lep = &leaf->ents[blk->index]; + ents = xfs_dir3_leaf_ents_p(leaf); + lep = &ents[blk->index]; ASSERT(state->extravalid); /* * Point to the data entry. diff --git a/fs/xfs/xfs_dir2_priv.h b/fs/xfs/xfs_dir2_priv.h index 910e64413316..932565d6ef2a 100644 --- a/fs/xfs/xfs_dir2_priv.h +++ b/fs/xfs/xfs_dir2_priv.h @@ -77,24 +77,25 @@ extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_buf *bp, xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp); /* xfs_dir2_leaf.c */ -extern const struct xfs_buf_ops xfs_dir2_leafn_buf_ops; +extern const struct xfs_buf_ops xfs_dir3_leafn_buf_ops; -extern int xfs_dir2_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp, +extern int xfs_dir3_leafn_read(struct xfs_trans *tp, struct xfs_inode *dp, xfs_dablk_t fbno, xfs_daddr_t mappedbno, struct xfs_buf **bpp); extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, struct xfs_buf *dbp); extern int xfs_dir2_leaf_addname(struct xfs_da_args *args); -extern void xfs_dir2_leaf_compact(struct xfs_da_args *args, - struct xfs_buf *bp); -extern void xfs_dir2_leaf_compact_x1(struct xfs_buf *bp, int *indexp, +extern void xfs_dir3_leaf_compact(struct xfs_da_args *args, + struct xfs_dir3_icleaf_hdr *leafhdr, struct xfs_buf *bp); +extern void xfs_dir3_leaf_compact_x1(struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int *indexp, int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent, size_t bufsize, xfs_off_t *offset, filldir_t filldir); -extern int xfs_dir2_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno, - struct xfs_buf **bpp, int magic); -extern void xfs_dir2_leaf_log_ents(struct xfs_trans *tp, struct xfs_buf *bp, +extern int xfs_dir3_leaf_get_buf(struct xfs_da_args *args, xfs_dir2_db_t bno, + struct xfs_buf **bpp, __uint16_t magic); +extern void xfs_dir3_leaf_log_ents(struct xfs_trans *tp, struct xfs_buf *bp, int first, int last); -extern void xfs_dir2_leaf_log_header(struct xfs_trans *tp, +extern void xfs_dir3_leaf_log_header(struct xfs_trans *tp, struct xfs_buf *bp); extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args); extern int xfs_dir2_leaf_removename(struct xfs_da_args *args); @@ -104,11 +105,18 @@ extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args, extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args, struct xfs_buf *lbp, xfs_dir2_db_t db); extern struct xfs_dir2_leaf_entry * -xfs_dir2_leaf_find_entry(struct xfs_dir2_leaf *leaf, int index, int compact, - int lowstale, int highstale, - int *lfloglow, int *lfloghigh); +xfs_dir3_leaf_find_entry(struct xfs_dir3_icleaf_hdr *leafhdr, + struct xfs_dir2_leaf_entry *ents, int index, int compact, + int lowstale, int highstale, int *lfloglow, int *lfloghigh); extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state); +extern void xfs_dir3_leaf_hdr_from_disk(struct xfs_dir3_icleaf_hdr *to, + struct xfs_dir2_leaf *from); +extern void xfs_dir3_leaf_hdr_to_disk(struct xfs_dir2_leaf *to, + struct xfs_dir3_icleaf_hdr *from); +extern bool xfs_dir3_leaf_check_int(struct xfs_mount *mp, + struct xfs_dir3_icleaf_hdr *hdr, struct xfs_dir2_leaf *leaf); + /* xfs_dir2_node.c */ extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, struct xfs_buf *lbp); |