diff options
Diffstat (limited to 'fs/xfs/linux-2.6')
| -rw-r--r-- | fs/xfs/linux-2.6/sv.h | 59 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.c | 425 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_aops.h | 16 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 238 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.h | 29 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_discard.c | 191 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_discard.h | 8 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_export.c | 12 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_file.c | 587 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_ioctl.c | 3 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_iops.c | 54 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_linux.h | 1 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_super.c | 31 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_sync.c | 103 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_sysctl.c | 23 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_trace.h | 92 |
16 files changed, 1125 insertions, 747 deletions
diff --git a/fs/xfs/linux-2.6/sv.h b/fs/xfs/linux-2.6/sv.h deleted file mode 100644 index 4dfc7c370819..000000000000 --- a/fs/xfs/linux-2.6/sv.h +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPPORT_SV_H__ -#define __XFS_SUPPORT_SV_H__ - -#include <linux/wait.h> -#include <linux/sched.h> -#include <linux/spinlock.h> - -/* - * Synchronisation variables. - * - * (Parameters "pri", "svf" and "rts" are not implemented) - */ - -typedef struct sv_s { - wait_queue_head_t waiters; -} sv_t; - -static inline void _sv_wait(sv_t *sv, spinlock_t *lock) -{ - DECLARE_WAITQUEUE(wait, current); - - add_wait_queue_exclusive(&sv->waiters, &wait); - __set_current_state(TASK_UNINTERRUPTIBLE); - spin_unlock(lock); - - schedule(); - - remove_wait_queue(&sv->waiters, &wait); -} - -#define sv_init(sv,flag,name) \ - init_waitqueue_head(&(sv)->waiters) -#define sv_destroy(sv) \ - /*NOTHING*/ -#define sv_wait(sv, pri, lock, s) \ - _sv_wait(sv, lock) -#define sv_signal(sv) \ - wake_up(&(sv)->waiters) -#define sv_broadcast(sv) \ - wake_up_all(&(sv)->waiters) - -#endif /* __XFS_SUPPORT_SV_H__ */ diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 691f61223ed6..ec7bbb5645b6 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -38,15 +38,6 @@ #include <linux/pagevec.h> #include <linux/writeback.h> -/* - * Types of I/O for bmap clustering and I/O completion tracking. - */ -enum { - IO_READ, /* mapping for a read */ - IO_DELAY, /* mapping covers delalloc region */ - IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */ - IO_NEW /* just allocated */ -}; /* * Prime number of hash buckets since address is used as the key. @@ -182,9 +173,6 @@ xfs_setfilesize( xfs_inode_t *ip = XFS_I(ioend->io_inode); xfs_fsize_t isize; - ASSERT((ip->i_d.di_mode & S_IFMT) == S_IFREG); - ASSERT(ioend->io_type != IO_READ); - if (unlikely(ioend->io_error)) return 0; @@ -244,10 +232,8 @@ xfs_end_io( * We might have to update the on-disk file size after extending * writes. */ - if (ioend->io_type != IO_READ) { - error = xfs_setfilesize(ioend); - ASSERT(!error || error == EAGAIN); - } + error = xfs_setfilesize(ioend); + ASSERT(!error || error == EAGAIN); /* * If we didn't complete processing of the ioend, requeue it to the @@ -318,14 +304,63 @@ STATIC int xfs_map_blocks( struct inode *inode, loff_t offset, - ssize_t count, struct xfs_bmbt_irec *imap, - int flags) + int type, + int nonblocking) { - int nmaps = 1; - int new = 0; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + ssize_t count = 1 << inode->i_blkbits; + xfs_fileoff_t offset_fsb, end_fsb; + int error = 0; + int bmapi_flags = XFS_BMAPI_ENTIRE; + int nimaps = 1; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); + + if (type == IO_UNWRITTEN) + bmapi_flags |= XFS_BMAPI_IGSTATE; + + if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) { + if (nonblocking) + return -XFS_ERROR(EAGAIN); + xfs_ilock(ip, XFS_ILOCK_SHARED); + } - return -xfs_iomap(XFS_I(inode), offset, count, flags, imap, &nmaps, &new); + ASSERT(ip->i_d.di_format != XFS_DINODE_FMT_BTREE || + (ip->i_df.if_flags & XFS_IFEXTENTS)); + ASSERT(offset <= mp->m_maxioffset); + + if (offset + count > mp->m_maxioffset) + count = mp->m_maxioffset - offset; + end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + count); + offset_fsb = XFS_B_TO_FSBT(mp, offset); + error = xfs_bmapi(NULL, ip, offset_fsb, end_fsb - offset_fsb, + bmapi_flags, NULL, 0, imap, &nimaps, NULL); + xfs_iunlock(ip, XFS_ILOCK_SHARED); + + if (error) + return -XFS_ERROR(error); + + if (type == IO_DELALLOC && + (!nimaps || isnullstartblock(imap->br_startblock))) { + error = xfs_iomap_write_allocate(ip, offset, count, imap); + if (!error) + trace_xfs_map_blocks_alloc(ip, offset, count, type, imap); + return -XFS_ERROR(error); + } + +#ifdef DEBUG + if (type == IO_UNWRITTEN) { + ASSERT(nimaps); + ASSERT(imap->br_startblock != HOLESTARTBLOCK); + ASSERT(imap->br_startblock != DELAYSTARTBLOCK); + } +#endif + if (nimaps) + trace_xfs_map_blocks_found(ip, offset, count, type, imap); + return 0; } STATIC int @@ -380,26 +415,18 @@ xfs_submit_ioend_bio( submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC_PLUG : WRITE, bio); - ASSERT(!bio_flagged(bio, BIO_EOPNOTSUPP)); - bio_put(bio); } STATIC struct bio * xfs_alloc_ioend_bio( struct buffer_head *bh) { - struct bio *bio; int nvecs = bio_get_nr_vecs(bh->b_bdev); - - do { - bio = bio_alloc(GFP_NOIO, nvecs); - nvecs >>= 1; - } while (!bio); + struct bio *bio = bio_alloc(GFP_NOIO, nvecs); ASSERT(bio->bi_private == NULL); bio->bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio->bi_bdev = bh->b_bdev; - bio_get(bio); return bio; } @@ -470,9 +497,8 @@ xfs_submit_ioend( /* Pass 1 - start writeback */ do { next = ioend->io_list; - for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) { + for (bh = ioend->io_buffer_head; bh; bh = bh->b_private) xfs_start_buffer_writeback(bh); - } } while ((ioend = next) != NULL); /* Pass 2 - submit I/O */ @@ -600,117 +626,13 @@ xfs_map_at_offset( ASSERT(imap->br_startblock != HOLESTARTBLOCK); ASSERT(imap->br_startblock != DELAYSTARTBLOCK); - lock_buffer(bh); xfs_map_buffer(inode, bh, imap, offset); - bh->b_bdev = xfs_find_bdev_for_inode(inode); set_buffer_mapped(bh); clear_buffer_delay(bh); clear_buffer_unwritten(bh); } /* - * Look for a page at index that is suitable for clustering. - */ -STATIC unsigned int -xfs_probe_page( - struct page *page, - unsigned int pg_offset) -{ - struct buffer_head *bh, *head; - int ret = 0; - - if (PageWriteback(page)) - return 0; - if (!PageDirty(page)) - return 0; - if (!page->mapping) - return 0; - if (!page_has_buffers(page)) - return 0; - - bh = head = page_buffers(page); - do { - if (!buffer_uptodate(bh)) - break; - if (!buffer_mapped(bh)) - break; - ret += bh->b_size; - if (ret >= pg_offset) - break; - } while ((bh = bh->b_this_page) != head); - - return ret; -} - -STATIC size_t -xfs_probe_cluster( - struct inode *inode, - struct page *startpage, - struct buffer_head *bh, - struct buffer_head *head) -{ - struct pagevec pvec; - pgoff_t tindex, tlast, tloff; - size_t total = 0; - int done = 0, i; - - /* First sum forwards in this page */ - do { - if (!buffer_uptodate(bh) || !buffer_mapped(bh)) - return total; - total += bh->b_size; - } while ((bh = bh->b_this_page) != head); - - /* if we reached the end of the page, sum forwards in following pages */ - tlast = i_size_read(inode) >> PAGE_CACHE_SHIFT; - tindex = startpage->index + 1; - - /* Prune this back to avoid pathological behavior */ - tloff = min(tlast, startpage->index + 64); - - pagevec_init(&pvec, 0); - while (!done && tindex <= tloff) { - unsigned len = min_t(pgoff_t, PAGEVEC_SIZE, tlast - tindex + 1); - - if (!pagevec_lookup(&pvec, inode->i_mapping, tindex, len)) - break; - - for (i = 0; i < pagevec_count(&pvec); i++) { - struct page *page = pvec.pages[i]; - size_t pg_offset, pg_len = 0; - - if (tindex == tlast) { - pg_offset = - i_size_read(inode) & (PAGE_CACHE_SIZE - 1); - if (!pg_offset) { - done = 1; - break; - } - } else - pg_offset = PAGE_CACHE_SIZE; - - if (page->index == tindex && trylock_page(page)) { - pg_len = xfs_probe_page(page, pg_offset); - unlock_page(page); - } - - if (!pg_len) { - done = 1; - break; - } - - total += pg_len; - tindex++; - } - - pagevec_release(&pvec); - cond_resched(); - } - - return total; -} - -/* * Test if a given page is suitable for writing as part of an unwritten * or delayed allocate extent. */ @@ -731,9 +653,9 @@ xfs_is_delayed_page( if (buffer_unwritten(bh)) acceptable = (type == IO_UNWRITTEN); else if (buffer_delay(bh)) - acceptable = (type == IO_DELAY); + acceptable = (type == IO_DELALLOC); else if (buffer_dirty(bh) && buffer_mapped(bh)) - acceptable = (type == IO_NEW); + acceptable = (type == IO_OVERWRITE); else break; } while ((bh = bh->b_this_page) != head); @@ -758,8 +680,7 @@ xfs_convert_page( loff_t tindex, struct xfs_bmbt_irec *imap, xfs_ioend_t **ioendp, - struct writeback_control *wbc, - int all_bh) + struct writeback_control *wbc) { struct buffer_head *bh, *head; xfs_off_t end_offset; @@ -814,37 +735,30 @@ xfs_convert_page( continue; } - if (buffer_unwritten(bh) || buffer_delay(bh)) { + if (buffer_unwritten(bh) || buffer_delay(bh) || + buffer_mapped(bh)) { if (buffer_unwritten(bh)) type = IO_UNWRITTEN; + else if (buffer_delay(bh)) + type = IO_DELALLOC; else - type = IO_DELAY; + type = IO_OVERWRITE; if (!xfs_imap_valid(inode, imap, offset)) { done = 1; continue; } - ASSERT(imap->br_startblock != HOLESTARTBLOCK); - ASSERT(imap->br_startblock != DELAYSTARTBLOCK); - - xfs_map_at_offset(inode, bh, imap, offset); + lock_buffer(bh); + if (type != IO_OVERWRITE) + xfs_map_at_offset(inode, bh, imap, offset); xfs_add_to_ioend(inode, bh, offset, type, ioendp, done); page_dirty--; count++; } else { - type = IO_NEW; - if (buffer_mapped(bh) && all_bh) { - lock_buffer(bh); - xfs_add_to_ioend(inode, bh, offset, - type, ioendp, done); - count++; - page_dirty--; - } else { - done = 1; - } + done = 1; } } while (offset += len, (bh = bh->b_this_page) != head); @@ -876,7 +790,6 @@ xfs_cluster_write( struct xfs_bmbt_irec *imap, xfs_ioend_t **ioendp, struct writeback_control *wbc, - int all_bh, pgoff_t tlast) { struct pagevec pvec; @@ -891,7 +804,7 @@ xfs_cluster_write( for (i = 0; i < pagevec_count(&pvec); i++) { done = xfs_convert_page(inode, pvec.pages[i], tindex++, - imap, ioendp, wbc, all_bh); + imap, ioendp, wbc); if (done) break; } @@ -935,7 +848,7 @@ xfs_aops_discard_page( struct buffer_head *bh, *head; loff_t offset = page_offset(page); - if (!xfs_is_delayed_page(page, IO_DELAY)) + if (!xfs_is_delayed_page(page, IO_DELALLOC)) goto out_invalidate; if (XFS_FORCED_SHUTDOWN(ip->i_mount)) @@ -1002,10 +915,10 @@ xfs_vm_writepage( unsigned int type; __uint64_t end_offset; pgoff_t end_index, last_index; - ssize_t size, len; - int flags, err, imap_valid = 0, uptodate = 1; + ssize_t len; + int err, imap_valid = 0, uptodate = 1; int count = 0; - int all_bh = 0; + int nonblocking = 0; trace_xfs_writepage(inode, page, 0); @@ -1056,10 +969,14 @@ xfs_vm_writepage( bh = head = page_buffers(page); offset = page_offset(page); - flags = BMAPI_READ; - type = IO_NEW; + type = IO_OVERWRITE; + + if (wbc->sync_mode == WB_SYNC_NONE && wbc->nonblocking) + nonblocking = 1; do { + int new_ioend = 0; + if (offset >= end_offset) break; if (!buffer_uptodate(bh)) @@ -1076,90 +993,54 @@ xfs_vm_writepage( continue; } - if (imap_valid) - imap_valid = xfs_imap_valid(inode, &imap, offset); - - if (buffer_unwritten(bh) || buffer_delay(bh)) { - int new_ioend = 0; - - /* - * Make sure we don't use a read-only iomap - */ - if (flags == BMAPI_READ) - imap_valid = 0; - - if (buffer_unwritten(bh)) { + if (buffer_unwritten(bh)) { + if (type != IO_UNWRITTEN) { type = IO_UNWRITTEN; - flags = BMAPI_WRITE | BMAPI_IGNSTATE; - } else if (buffer_delay(bh)) { - type = IO_DELAY; - flags = BMAPI_ALLOCATE; - - if (wbc->sync_mode == WB_SYNC_NONE) - flags |= BMAPI_TRYLOCK; - } - - if (!imap_valid) { - /* - * If we didn't have a valid mapping then we - * need to ensure that we put the new mapping - * in a new ioend structure. This needs to be - * done to ensure that the ioends correctly - * reflect the block mappings at io completion - * for unwritten extent conversion. - */ - new_ioend = 1; - err = xfs_map_blocks(inode, offset, len, - &imap, flags); - if (err) - goto error; - imap_valid = xfs_imap_valid(inode, &imap, - offset); + imap_valid = 0; } - if (imap_valid) { - xfs_map_at_offset(inode, bh, &imap, offset); - xfs_add_to_ioend(inode, bh, offset, type, - &ioend, new_ioend); - count++; + } else if (buffer_delay(bh)) { + if (type != IO_DELALLOC) { + type = IO_DELALLOC; + imap_valid = 0; } } else if (buffer_uptodate(bh)) { - /* - * we got here because the buffer is already mapped. - * That means it must already have extents allocated - * underneath it. Map the extent by reading it. - */ - if (!imap_valid || flags != BMAPI_READ) { - flags = BMAPI_READ; - size = xfs_probe_cluster(inode, page, bh, head); - err = xfs_map_blocks(inode, offset, size, - &imap, flags); - if (err) - goto error; - imap_valid = xfs_imap_valid(inode, &imap, - offset); + if (type != IO_OVERWRITE) { + type = IO_OVERWRITE; + imap_valid = 0; } + } else { + if (PageUptodate(page)) { + ASSERT(buffer_mapped(bh)); + imap_valid = 0; + } + continue; + } + if (imap_valid) + imap_valid = xfs_imap_valid(inode, &imap, offset); + if (!imap_valid) { /* - * We set the type to IO_NEW in case we are doing a - * small write at EOF that is extending the file but - * without needing an allocation. We need to update the - * file size on I/O completion in this case so it is - * the same case as having just allocated a new extent - * that we are writing into for the first time. + * If we didn't have a valid mapping then we need to + * put the new mapping into a separate ioend structure. + * This ensures non-contiguous extents always have + * separate ioends, which is particularly important + * for unwritten extent conversion at I/O completion + * time. */ - type = IO_NEW; - if (trylock_buffer(bh)) { - if (imap_valid) - all_bh = 1; - xfs_add_to_ioend(inode, bh, offset, type, - &ioend, !imap_valid); - count++; - } else { - imap_valid = 0; - } - } else if (PageUptodate(page)) { - ASSERT(buffer_mapped(bh)); - imap_valid = 0; + new_ioend = 1; + err = xfs_map_blocks(inode, offset, &imap, type, + nonblocking); + if (err) + goto error; + imap_valid = xfs_imap_valid(inode, &imap, offset); + } + if (imap_valid) { + lock_buffer(bh); + if (type != IO_OVERWRITE) + xfs_map_at_offset(inode, bh, &imap, offset); + xfs_add_to_ioend(inode, bh, offset, type, &ioend, + new_ioend); + count++; } if (!iohead) @@ -1188,7 +1069,7 @@ xfs_vm_writepage( end_index = last_index; xfs_cluster_write(inode, page->index + 1, &imap, &ioend, - wbc, all_bh, end_index); + wbc, end_index); } if (iohead) @@ -1257,13 +1138,19 @@ __xfs_get_blocks( int create, int direct) { - int flags = create ? BMAPI_WRITE : BMAPI_READ; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + xfs_fileoff_t offset_fsb, end_fsb; + int error = 0; + int lockmode = 0; struct xfs_bmbt_irec imap; + int nimaps = 1; xfs_off_t offset; ssize_t size; - int nimap = 1; int new = 0; - int error; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -XFS_ERROR(EIO); offset = (xfs_off_t)iblock << inode->i_blkbits; ASSERT(bh_result->b_size >= (1 << inode->i_blkbits)); @@ -1272,15 +1159,45 @@ __xfs_get_blocks( if (!create && direct && offset >= i_size_read(inode)) return 0; - if (direct && create) - flags |= BMAPI_DIRECT; + if (create) { + lockmode = XFS_ILOCK_EXCL; + xfs_ilock(ip, lockmode); + } else { + lockmode = xfs_ilock_map_shared(ip); + } + + ASSERT(offset <= mp->m_maxioffset); + if (offset + size > mp->m_maxioffset) + size = mp->m_maxioffset - offset; + end_fsb = XFS_B_TO_FSB(mp, (xfs_ufsize_t)offset + size); + offset_fsb = XFS_B_TO_FSBT(mp, offset); - error = xfs_iomap(XFS_I(inode), offset, size, flags, &imap, &nimap, - &new); + error = xfs_bmapi(NULL, ip, offset_fsb, end_fsb - offset_fsb, + XFS_BMAPI_ENTIRE, NULL, 0, &imap, &nimaps, NULL); if (error) - return -error; - if (nimap == 0) - return 0; + goto out_unlock; + + if (create && + (!nimaps || + (imap.br_startblock == HOLESTARTBLOCK || + imap.br_startblock == DELAYSTARTBLOCK))) { + if (direct) { + error = xfs_iomap_write_direct(ip, offset, size, + &imap, nimaps); + } else { + error = xfs_iomap_write_delay(ip, offset, size, &imap); + } + if (error) + goto out_unlock; + + trace_xfs_get_blocks_alloc(ip, offset, size, 0, &imap); + } else if (nimaps) { + trace_xfs_get_blocks_found(ip, offset, size, 0, &imap); + } else { + trace_xfs_get_blocks_notfound(ip, offset, size); + goto out_unlock; + } + xfs_iunlock(ip, lockmode); if (imap.br_startblock != HOLESTARTBLOCK && imap.br_startblock != DELAYSTARTBLOCK) { @@ -1347,6 +1264,10 @@ __xfs_get_blocks( } return 0; + +out_unlock: + xfs_iunlock(ip, lockmode); + return -error; } int @@ -1434,7 +1355,7 @@ xfs_vm_direct_IO( ssize_t ret; if (rw & WRITE) { - iocb->private = xfs_alloc_ioend(inode, IO_NEW); + iocb->private = xfs_alloc_ioend(inode, IO_DIRECT); ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iov, offset, nr_segs, diff --git a/fs/xfs/linux-2.6/xfs_aops.h b/fs/xfs/linux-2.6/xfs_aops.h index c5057fb6237a..71f721e1a71f 100644 --- a/fs/xfs/linux-2.6/xfs_aops.h +++ b/fs/xfs/linux-2.6/xfs_aops.h @@ -23,6 +23,22 @@ extern struct workqueue_struct *xfsconvertd_workqueue; extern mempool_t *xfs_ioend_pool; /* + * Types of I/O for bmap clustering and I/O completion tracking. + */ +enum { + IO_DIRECT = 0, /* special case for direct I/O ioends */ + IO_DELALLOC, /* mapping covers delalloc region */ + IO_UNWRITTEN, /* mapping covers allocated but uninitialized data */ + IO_OVERWRITE, /* mapping covers already allocated extent */ +}; + +#define XFS_IO_TYPES \ + { 0, "" }, \ + { IO_DELALLOC, "delalloc" }, \ + { IO_UNWRITTEN, "unwritten" }, \ + { IO_OVERWRITE, "overwrite" } + +/* * xfs_ioend struct manages large extent writes for XFS. * It can manage several multi-page bio's at once. */ diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 4c5deb6e9e31..ac1c7e8378dd 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -44,12 +44,7 @@ static kmem_zone_t *xfs_buf_zone; STATIC int xfsbufd(void *); -STATIC int xfsbufd_wakeup(struct shrinker *, int, gfp_t); STATIC void xfs_buf_delwri_queue(xfs_buf_t *, int); -static struct shrinker xfs_buf_shake = { - .shrink = xfsbufd_wakeup, - .seeks = DEFAULT_SEEKS, -}; static struct workqueue_struct *xfslogd_workqueue; struct workqueue_struct *xfsdatad_workqueue; @@ -168,8 +163,79 @@ test_page_region( } /* - * Internal xfs_buf_t object manipulation + * xfs_buf_lru_add - add a buffer to the LRU. + * + * The LRU takes a new reference to the buffer so that it will only be freed + * once the shrinker takes the buffer off the LRU. */ +STATIC void +xfs_buf_lru_add( + struct xfs_buf *bp) +{ + struct xfs_buftarg *btp = bp->b_target; + + spin_lock(&btp->bt_lru_lock); + if (list_empty(&bp->b_lru)) { + atomic_inc(&bp->b_hold); + list_add_tail(&bp->b_lru, &btp->bt_lru); + btp->bt_lru_nr++; + } + spin_unlock(&btp->bt_lru_lock); +} + +/* + * xfs_buf_lru_del - remove a buffer from the LRU + * + * The unlocked check is safe here because it only occurs when there are not + * b_lru_ref counts left on the inode under the pag->pag_buf_lock. it is there + * to optimise the shrinker removing the buffer from the LRU and calling + * xfs_buf_free(). i.e. it removes an unneccessary round trip on the + * bt_lru_lock. + */ +STATIC void +xfs_buf_lru_del( + struct xfs_buf *bp) +{ + struct xfs_buftarg *btp = bp->b_target; + + if (list_empty(&bp->b_lru)) + return; + + spin_lock(&btp->bt_lru_lock); + if (!list_empty(&bp->b_lru)) { + list_del_init(&bp->b_lru); + btp->bt_lru_nr--; + } + spin_unlock(&btp->bt_lru_lock); +} + +/* + * When we mark a buffer stale, we remove the buffer from the LRU and clear the + * b_lru_ref count so that the buffer is freed immediately when the buffer + * reference count falls to zero. If the buffer is already on the LRU, we need + * to remove the reference that LRU holds on the buffer. + * + * This prevents build-up of stale buffers on the LRU. + */ +void +xfs_buf_stale( + struct xfs_buf *bp) +{ + bp->b_flags |= XBF_STALE; + atomic_set(&(bp)->b_lru_ref, 0); + if (!list_empty(&bp->b_lru)) { + struct xfs_buftarg *btp = bp->b_target; + + spin_lock(&btp->bt_lru_lock); + if (!list_empty(&bp->b_lru)) { + list_del_init(&bp->b_lru); + btp->bt_lru_nr--; + atomic_dec(&bp->b_hold); + } + spin_unlock(&btp->bt_lru_lock); + } + ASSERT(atomic_read(&bp->b_hold) >= 1); +} STATIC void _xfs_buf_initialize( @@ -186,7 +252,9 @@ _xfs_buf_initialize( memset(bp, 0, sizeof(xfs_buf_t)); atomic_set(&bp->b_hold, 1); + atomic_set(&bp->b_lru_ref, 1); init_completion(&bp->b_iowait); + INIT_LIST_HEAD(&bp->b_lru); INIT_LIST_HEAD(&bp->b_list); RB_CLEAR_NODE(&bp->b_rbnode); sema_init(&bp->b_sema, 0); /* held, no waiters */ @@ -262,6 +330,8 @@ xfs_buf_free( { trace_xfs_buf_free(bp, _RET_IP_); + ASSERT(list_empty(&bp->b_lru)); + if (bp->b_flags & (_XBF_PAGE_CACHE|_XBF_PAGES)) { uint i; @@ -337,7 +407,6 @@ _xfs_buf_lookup_pages( __func__, gfp_mask); XFS_STATS_INC(xb_page_retries); - xfsbufd_wakeup(NULL, 0, gfp_mask); congestion_wait(BLK_RW_ASYNC, HZ/50); goto retry; } @@ -827,7 +896,7 @@ xfs_buf_rele( trace_xfs_buf_rele(bp, _RET_IP_); if (!pag) { - ASSERT(!bp->b_relse); + ASSERT(list_empty(&bp->b_lru)); ASSERT(RB_EMPTY_NODE(&bp->b_rbnode)); if (atomic_dec_and_test(&bp->b_hold)) xfs_buf_free(bp); @@ -835,13 +904,15 @@ xfs_buf_rele( } ASSERT(!RB_EMPTY_NODE(&bp->b_rbnode)); + ASSERT(atomic_read(&bp->b_hold) > 0); if (atomic_dec_and_lock(&bp->b_hold, &pag->pag_buf_lock)) { - if (bp->b_relse) { - atomic_inc(&bp->b_hold); + if (!(bp->b_flags & XBF_STALE) && + atomic_read(&bp->b_lru_ref)) { + xfs_buf_lru_add(bp); spin_unlock(&pag->pag_buf_lock); - bp->b_relse(bp); } else { + xfs_buf_lru_del(bp); ASSERT(!(bp->b_flags & (XBF_DELWRI|_XBF_DELWRI_Q))); rb_erase(&bp->b_rbnode, &pag->pag_buf_tree); spin_unlock(&pag->pag_buf_lock); @@ -1438,51 +1509,84 @@ xfs_buf_iomove( */ /* - * Wait for any bufs with callbacks that have been submitted but - * have not yet returned... walk the hash list for the target. + * Wait for any bufs with callbacks that have been submitted but have not yet + * returned. These buffers will have an elevated hold count, so wait on those + * while freeing all the buffers only held by the LRU. */ void xfs_wait_buftarg( struct xfs_buftarg *btp) { - struct xfs_perag *pag; - uint i; + struct xfs_buf *bp; - for (i = 0; i < btp->bt_mount->m_sb.sb_agcount; i++) { - pag = xfs_perag_get(btp->bt_mount, i); - spin_lock(&pag->pag_buf_lock); - while (rb_first(&pag->pag_buf_tree)) { - spin_unlock(&pag->pag_buf_lock); +restart: + spin_lock(&btp->bt_lru_lock); + while (!list_empty(&btp->bt_lru)) { + bp = list_first_entry(&btp->bt_lru, struct xfs_buf, b_lru); + if (atomic_read(&bp->b_hold) > 1) { + spin_unlock(&btp->bt_lru_lock); delay(100); - spin_lock(&pag->pag_buf_lock); + goto restart; } - spin_unlock(&pag->pag_buf_lock); - xfs_perag_put(pag); + /* + * clear the LRU reference count so the bufer doesn't get + * ignored in xfs_buf_rele(). + */ + atomic_set(&bp->b_lru_ref, 0); + spin_unlock(&btp->bt_lru_lock); + xfs_buf_rele(bp); + spin_lock(&btp->bt_lru_lock); } + spin_unlock(&btp->bt_lru_lock); } -/* - * buftarg list for delwrite queue processing - */ -static LIST_HEAD(xfs_buftarg_list); -static DEFINE_SPINLOCK(xfs_buftarg_lock); - -STATIC void -xfs_register_buftarg( - xfs_buftarg_t *btp) +int +xfs_buftarg_shrink( + struct shrinker *shrink, + int nr_to_scan, + gfp_t mask) { - spin_lock(&xfs_buftarg_lock); - list_add(&btp->bt_list, &xfs_buftarg_list); - spin_unlock(&xfs_buftarg_lock); -} + struct xfs_buftarg *btp = container_of(shrink, + struct xfs_buftarg, bt_shrinker); + struct xfs_buf *bp; + LIST_HEAD(dispose); -STATIC void -xfs_unregister_buftarg( - xfs_buftarg_t *btp) -{ - spin_lock(&xfs_buftarg_lock); - list_del(&btp->bt_list); - spin_unlock(&xfs_buftarg_lock); + if (!nr_to_scan) + return btp->bt_lru_nr; + + spin_lock(&btp->bt_lru_lock); + while (!list_empty(&btp->bt_lru)) { + if (nr_to_scan-- <= 0) + break; + + bp = list_first_entry(&btp->bt_lru, struct xfs_buf, b_lru); + + /* + * Decrement the b_lru_ref count unless the value is already + * zero. If the value is already zero, we need to reclaim the + * buffer, otherwise it gets another trip through the LRU. + */ + if (!atomic_add_unless(&bp->b_lru_ref, -1, 0)) { + list_move_tail(&bp->b_lru, &btp->bt_lru); + continue; + } + + /* + * remove the buffer from the LRU now to avoid needing another + * lock round trip inside xfs_buf_rele(). + */ + list_move(&bp->b_lru, &dispose); + btp->bt_lru_nr--; + } + spin_unlock(&btp->bt_lru_lock); + + while (!list_empty(&dispose)) { + bp = list_first_entry(&dispose, struct xfs_buf, b_lru); + list_del_init(&bp->b_lru); + xfs_buf_rele(bp); + } + + return btp->bt_lru_nr; } void @@ -1490,17 +1594,14 @@ xfs_free_buftarg( struct xfs_mount *mp, struct xfs_buftarg *btp) { + unregister_shrinker(&btp->bt_shrinker); + xfs_flush_buftarg(btp, 1); if (mp->m_flags & XFS_MOUNT_BARRIER) xfs_blkdev_issue_flush(btp); iput(btp->bt_mapping->host); - /* Unregister the buftarg first so that we don't get a - * wakeup finding a non-existent task - */ - xfs_unregister_buftarg(btp); kthread_stop(btp->bt_task); - kmem_free(btp); } @@ -1597,20 +1698,13 @@ xfs_alloc_delwrite_queue( xfs_buftarg_t *btp, const char *fsname) { - int error = 0; - - INIT_LIST_HEAD(&btp->bt_list); INIT_LIST_HEAD(&btp->bt_delwrite_queue); spin_lock_init(&btp->bt_delwrite_lock); btp->bt_flags = 0; btp->bt_task = kthread_run(xfsbufd, btp, "xfsbufd/%s", fsname); - if (IS_ERR(btp->bt_task)) { - error = PTR_ERR(btp->bt_task); - goto out_error; - } - xfs_register_buftarg(btp); -out_error: - return error; + if (IS_ERR(btp->bt_task)) + return PTR_ERR(btp->bt_task); + return 0; } xfs_buftarg_t * @@ -1627,12 +1721,17 @@ xfs_alloc_buftarg( btp->bt_mount = mp; btp->bt_dev = bdev->bd_dev; btp->bt_bdev = bdev; + INIT_LIST_HEAD(&btp->bt_lru); + spin_lock_init(&btp->bt_lru_lock); if (xfs_setsize_buftarg_early(btp, bdev)) goto error; if (xfs_mapping_buftarg(btp, bdev)) goto error; if (xfs_alloc_delwrite_queue(btp, fsname)) goto error; + btp->bt_shrinker.shrink = xfs_buftarg_shrink; + btp->bt_shrinker.seeks = DEFAULT_SEEKS; + register_shrinker(&btp->bt_shrinker); return btp; error: @@ -1737,27 +1836,6 @@ xfs_buf_runall_queues( flush_workqueue(queue); } -STATIC int -xfsbufd_wakeup( - struct shrinker *shrink, - int priority, - gfp_t mask) -{ - xfs_buftarg_t *btp; - - spin_lock(&xfs_buftarg_lock); - list_for_each_entry(btp, &xfs_buftarg_list, bt_list) { - if (test_bit(XBT_FORCE_SLEEP, &btp->bt_flags)) - continue; - if (list_empty(&btp->bt_delwrite_queue)) - continue; - set_bit(XBT_FORCE_FLUSH, &btp->bt_flags); - wake_up_process(btp->bt_task); - } - spin_unlock(&xfs_buftarg_lock); - return 0; -} - /* * Move as many buffers as specified to the supplied list * idicating if we skipped any buffers to prevent deadlocks. @@ -1952,7 +2030,6 @@ xfs_buf_init(void) if (!xfsconvertd_workqueue) goto out_destroy_xfsdatad_workqueue; - register_shrinker(&xfs_buf_shake); return 0; out_destroy_xfsdatad_workqueue: @@ -1968,7 +2045,6 @@ xfs_buf_init(void) void xfs_buf_terminate(void) { - unregister_shrinker(&xfs_buf_shake); destroy_workqueue(xfsconvertd_workqueue); destroy_workqueue(xfsdatad_workqueue); destroy_workqueue(xfslogd_workqueue); diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index 383a3f37cf98..cbe65950e524 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -128,10 +128,15 @@ typedef struct xfs_buftarg { /* per device delwri queue */ struct task_struct *bt_task; - struct list_head bt_list; struct list_head bt_delwrite_queue; spinlock_t bt_delwrite_lock; unsigned long bt_flags; + + /* LRU control structures */ + struct shrinker bt_shrinker; + struct list_head bt_lru; + spinlock_t bt_lru_lock; + unsigned int bt_lru_nr; } xfs_buftarg_t; /* @@ -147,8 +152,6 @@ typedef struct xfs_buftarg { struct xfs_buf; typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); -typedef void (*xfs_buf_relse_t)(struct xfs_buf *); -typedef int (*xfs_buf_bdstrat_t)(struct xfs_buf *); #define XB_PAGES 2 @@ -164,9 +167,11 @@ typedef struct xfs_buf { xfs_off_t b_file_offset; /* offset in file */ size_t b_buffer_length;/* size of buffer in bytes */ atomic_t b_hold; /* reference count */ + atomic_t b_lru_ref; /* lru reclaim ref count */ xfs_buf_flags_t b_flags; /* status flags */ struct semaphore b_sema; /* semaphore for lockables */ + struct list_head b_lru; /* lru list */ wait_queue_head_t b_waiters; /* unpin waiters */ struct list_head b_list; struct xfs_perag *b_pag; /* contains rbtree root */ @@ -176,7 +181,6 @@ typedef struct xfs_buf { void *b_addr; /* virtual address of buffer */ struct work_struct b_iodone_work; xfs_buf_iodone_t b_iodone; /* I/O completion function */ - xfs_buf_relse_t b_relse; /* releasing function */ struct completion b_iowait; /* queue for I/O waiters */ void *b_fspriv; void *b_fspriv2; @@ -264,7 +268,8 @@ extern void xfs_buf_terminate(void); #define XFS_BUF_ZEROFLAGS(bp) ((bp)->b_flags &= \ ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED)) -#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XBF_STALE) +void xfs_buf_stale(struct xfs_buf *bp); +#define XFS_BUF_STALE(bp) xfs_buf_stale(bp); #define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE) #define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE) #define XFS_BUF_SUPER_STALE(bp) do { \ @@ -315,7 +320,6 @@ extern void xfs_buf_terminate(void); #define XFS_BUF_FSPRIVATE2(bp, type) ((type)(bp)->b_fspriv2) #define XFS_BUF_SET_FSPRIVATE2(bp, val) ((bp)->b_fspriv2 = (void*)(val)) #define XFS_BUF_SET_START(bp) do { } while (0) -#define XFS_BUF_SET_BRELSE_FUNC(bp, func) ((bp)->b_relse = (func)) #define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->b_addr) #define XFS_BUF_SET_PTR(bp, val, cnt) xfs_buf_associate_memory(bp, val, cnt) @@ -328,9 +332,15 @@ extern void xfs_buf_terminate(void); #define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) #define XFS_BUF_SET_SIZE(bp, cnt) ((bp)->b_buffer_length = (cnt)) -#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) do { } while (0) +static inline void +xfs_buf_set_ref( + struct xfs_buf *bp, + int lru_ref) +{ + atomic_set(&bp->b_lru_ref, lru_ref); +} +#define XFS_BUF_SET_VTYPE_REF(bp, type, ref) xfs_buf_set_ref(bp, ref) #define XFS_BUF_SET_VTYPE(bp, type) do { } while (0) -#define XFS_BUF_SET_REF(bp, ref) do { } while (0) #define XFS_BUF_ISPINNED(bp) atomic_read(&((bp)->b_pin_count)) @@ -346,8 +356,7 @@ extern void xfs_buf_terminate(void); static inline void xfs_buf_relse(xfs_buf_t *bp) { - if (!bp->b_relse) - xfs_buf_unlock(bp); + xfs_buf_unlock(bp); xfs_buf_rele(bp); } diff --git a/fs/xfs/linux-2.6/xfs_discard.c b/fs/xfs/linux-2.6/xfs_discard.c new file mode 100644 index 000000000000..05201ae719e5 --- /dev/null +++ b/fs/xfs/linux-2.6/xfs_discard.c @@ -0,0 +1,191 @@ +/* + * Copyright (C) 2010 Red Hat, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include "xfs.h" +#include "xfs_sb.h" +#include "xfs_inum.h" +#include "xfs_log.h" +#include "xfs_ag.h" +#include "xfs_mount.h" +#include "xfs_quota.h" +#include "xfs_trans.h" +#include "xfs_alloc_btree.h" +#include "xfs_bmap_btree.h" +#include "xfs_ialloc_btree.h" +#include "xfs_btree.h" +#include "xfs_inode.h" +#include "xfs_alloc.h" +#include "xfs_error.h" +#include "xfs_discard.h" +#include "xfs_trace.h" + +STATIC int +xfs_trim_extents( + struct xfs_mount *mp, + xfs_agnumber_t agno, + xfs_fsblock_t start, + xfs_fsblock_t len, + xfs_fsblock_t minlen, + __uint64_t *blocks_trimmed) +{ + struct block_device *bdev = mp->m_ddev_targp->bt_bdev; + struct xfs_btree_cur *cur; + struct xfs_buf *agbp; + struct xfs_perag *pag; + int error; + int i; + + pag = xfs_perag_get(mp, agno); + + error = xfs_alloc_read_agf(mp, NULL, agno, 0, &agbp); + if (error || !agbp) + goto out_put_perag; + + cur = xfs_allocbt_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_CNT); + + /* + * Force out the log. This means any transactions that might have freed + * space before we took the AGF buffer lock are now on disk, and the + * volatile disk cache is flushed. + */ + xfs_log_force(mp, XFS_LOG_SYNC); + + /* + * Look up the longest btree in the AGF and start with it. + */ + error = xfs_alloc_lookup_le(cur, 0, + XFS_BUF_TO_AGF(agbp)->agf_longest, &i); + if (error) + goto out_del_cursor; + + /* + * Loop until we are done with all extents that are large + * enough to be worth discarding. + */ + while (i) { + xfs_agblock_t fbno; + xfs_extlen_t flen; + + error = xfs_alloc_get_rec(cur, &fbno, &flen, &i); + if (error) + goto out_del_cursor; + XFS_WANT_CORRUPTED_GOTO(i == 1, out_del_cursor); + ASSERT(flen <= XFS_BUF_TO_AGF(agbp)->agf_longest); + + /* + * Too small? Give up. + */ + if (flen < minlen) { + trace_xfs_discard_toosmall(mp, agno, fbno, flen); + goto out_del_cursor; + } + + /* + * If the extent is entirely outside of the range we are + * supposed to discard skip it. Do not bother to trim + * down partially overlapping ranges for now. + */ + if (XFS_AGB_TO_FSB(mp, agno, fbno) + flen < start || + XFS_AGB_TO_FSB(mp, agno, fbno) >= start + len) { + trace_xfs_discard_exclude(mp, agno, fbno, flen); + goto next_extent; + } + + /* + * If any blocks in the range are still busy, skip the + * discard and try again the next time. + */ + if (xfs_alloc_busy_search(mp, agno, fbno, flen)) { + trace_xfs_discard_busy(mp, agno, fbno, flen); + goto next_extent; + } + + trace_xfs_discard_extent(mp, agno, fbno, flen); + error = -blkdev_issue_discard(bdev, + XFS_AGB_TO_DADDR(mp, agno, fbno), + XFS_FSB_TO_BB(mp, flen), + GFP_NOFS, 0); + if (error) + goto out_del_cursor; + *blocks_trimmed += flen; + +next_extent: + error = xfs_btree_decrement(cur, 0, &i); + if (error) + goto out_del_cursor; + } + +out_del_cursor: + xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); + xfs_buf_relse(agbp); +out_put_perag: + xfs_perag_put(pag); + return error; +} + +int +xfs_ioc_trim( + struct xfs_mount *mp, + struct fstrim_range __user *urange) +{ + struct request_queue *q = mp->m_ddev_targp->bt_bdev->bd_disk->queue; + unsigned int granularity = q->limits.discard_granularity; + struct fstrim_range range; + xfs_fsblock_t start, len, minlen; + xfs_agnumber_t start_agno, end_agno, agno; + __uint64_t blocks_trimmed = 0; + int error, last_error = 0; + + if (!capable(CAP_SYS_ADMIN)) + return -XFS_ERROR(EPERM); + if (copy_from_user(&range, urange, sizeof(range))) + return -XFS_ERROR(EFAULT); + + /* + * Truncating down the len isn't actually quite correct, but using + * XFS_B_TO_FSB would mean we trivially get overflows for values + * of ULLONG_MAX or slightly lower. And ULLONG_MAX is the default + * used by the fstrim application. In the end it really doesn't + * matter as trimming blocks is an advisory interface. + */ + start = XFS_B_TO_FSBT(mp, range.start); + len = XFS_B_TO_FSBT(mp, range.len); + minlen = XFS_B_TO_FSB(mp, max_t(u64, granularity, range.minlen)); + + start_agno = XFS_FSB_TO_AGNO(mp, start); + if (start_agno >= mp->m_sb.sb_agcount) + return -XFS_ERROR(EINVAL); + + end_agno = XFS_FSB_TO_AGNO(mp, start + len); + if (end_agno >= mp->m_sb.sb_agcount) + end_agno = mp->m_sb.sb_agcount - 1; + + for (agno = start_agno; agno <= end_agno; agno++) { + error = -xfs_trim_extents(mp, agno, start, len, minlen, + &blocks_trimmed); + if (error) + last_error = error; + } + + if (last_error) + return last_error; + + range.len = XFS_FSB_TO_B(mp, blocks_trimmed); + if (copy_to_user(urange, &range, sizeof(range))) + return -XFS_ERROR(EFAULT); + return 0; +} diff --git a/fs/xfs/linux-2.6/xfs_discard.h b/fs/xfs/linux-2.6/xfs_discard.h new file mode 100644 index 000000000000..e82b6dd3e127 --- /dev/null +++ b/fs/xfs/linux-2.6/xfs_discard.h @@ -0,0 +1,8 @@ +#ifndef XFS_DISCARD_H +#define XFS_DISCARD_H 1 + +struct fstrim_range; + +extern int xfs_ioc_trim(struct xfs_mount *, struct fstrim_range __user *); + +#endif /* XFS_DISCARD_H */ diff --git a/fs/xfs/linux-2.6/xfs_export.c b/fs/xfs/linux-2.6/xfs_export.c index 3764d74790ec..fc0114da7fdd 100644 --- a/fs/xfs/linux-2.6/xfs_export.c +++ b/fs/xfs/linux-2.6/xfs_export.c @@ -70,8 +70,16 @@ xfs_fs_encode_fh( else fileid_type = FILEID_INO32_GEN_PARENT; - /* filesystem may contain 64bit inode numbers */ - if (!(XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_SMALL_INUMS)) + /* + * If the the filesystem may contain 64bit inode numbers, we need + * to use larger file handles that can represent them. + * + * While we only allocate inodes that do not fit into 32 bits any + * large enough filesystem may contain them, thus the slightly + * confusing looking conditional below. + */ + if (!(XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_SMALL_INUMS) || + (XFS_M(inode->i_sb)->m_flags & XFS_MOUNT_32BITINODES)) fileid_type |= XFS_FILEID_TYPE_64FLAG; /* diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index ba8ad422a165..a55c1b46b219 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -37,10 +37,45 @@ #include "xfs_trace.h" #include <linux/dcache.h> +#include <linux/falloc.h> static const struct vm_operations_struct xfs_file_vm_ops; /* + * Locking primitives for read and write IO paths to ensure we consistently use + * and order the inode->i_mutex, ip->i_lock and ip->i_iolock. + */ +static inline void +xfs_rw_ilock( + struct xfs_inode *ip, + int type) +{ + if (type & XFS_IOLOCK_EXCL) + mutex_lock(&VFS_I(ip)->i_mutex); + xfs_ilock(ip, type); +} + +static inline void +xfs_rw_iunlock( + struct xfs_inode *ip, + int type) +{ + xfs_iunlock(ip, type); + if (type & XFS_IOLOCK_EXCL) + mutex_unlock(&VFS_I(ip)->i_mutex); +} + +static inline void +xfs_rw_ilock_demote( + struct xfs_inode *ip, + int type) +{ + xfs_ilock_demote(ip, type); + if (type & XFS_IOLOCK_EXCL) + mutex_unlock(&VFS_I(ip)->i_mutex); +} + +/* * xfs_iozero * * xfs_iozero clears the specified range of buffer supplied, @@ -262,22 +297,21 @@ xfs_file_aio_read( if (XFS_FORCED_SHUTDOWN(mp)) return -EIO; - if (unlikely(ioflags & IO_ISDIRECT)) - mutex_lock(&inode->i_mutex); - xfs_ilock(ip, XFS_IOLOCK_SHARED); - if (unlikely(ioflags & IO_ISDIRECT)) { + xfs_rw_ilock(ip, XFS_IOLOCK_EXCL); + if (inode->i_mapping->nrpages) { ret = -xfs_flushinval_pages(ip, (iocb->ki_pos & PAGE_CACHE_MASK), -1, FI_REMAPF_LOCKED); + if (ret) { + xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL); + return ret; + } } - mutex_unlock(&inode->i_mutex); - if (ret) { - xfs_iunlock(ip, XFS_IOLOCK_SHARED); - return ret; - } - } + xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); + } else + xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); trace_xfs_file_read(ip, size, iocb->ki_pos, ioflags); @@ -285,7 +319,7 @@ xfs_file_aio_read( if (ret > 0) XFS_STATS_ADD(xs_read_bytes, ret); - xfs_iunlock(ip, XFS_IOLOCK_SHARED); + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); return ret; } @@ -309,7 +343,7 @@ xfs_file_splice_read( if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return -EIO; - xfs_ilock(ip, XFS_IOLOCK_SHARED); + xfs_rw_ilock(ip, XFS_IOLOCK_SHARED); trace_xfs_file_splice_read(ip, count, *ppos, ioflags); @@ -317,10 +351,61 @@ xfs_file_splice_read( if (ret > 0) XFS_STATS_ADD(xs_read_bytes, ret); - xfs_iunlock(ip, XFS_IOLOCK_SHARED); + xfs_rw_iunlock(ip, XFS_IOLOCK_SHARED); return ret; } +STATIC void +xfs_aio_write_isize_update( + struct inode *inode, + loff_t *ppos, + ssize_t bytes_written) +{ + struct xfs_inode *ip = XFS_I(inode); + xfs_fsize_t isize = i_size_read(inode); + + if (bytes_written > 0) + XFS_STATS_ADD(xs_write_bytes, bytes_written); + + if (unlikely(bytes_written < 0 && bytes_written != -EFAULT && + *ppos > isize)) + *ppos = isize; + + if (*ppos > ip->i_size) { + xfs_rw_ilock(ip, XFS_ILOCK_EXCL); + if (*ppos > ip->i_size) + ip->i_size = *ppos; + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); + } +} + +/* + * If this was a direct or synchronous I/O that failed (such as ENOSPC) then + * part of the I/O may have been written to disk before the error occured. In + * this case the on-disk file size may have been adjusted beyond the in-memory + * file size and now needs to be truncated back. + */ +STATIC void +xfs_aio_write_newsize_update( + struct xfs_inode *ip) +{ + if (ip->i_new_size) { + xfs_rw_ilock(ip, XFS_ILOCK_EXCL); + ip->i_new_size = 0; + if (ip->i_d.di_size > ip->i_size) + ip->i_d.di_size = ip->i_size; + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); + } +} + +/* + * xfs_file_splice_write() does not use xfs_rw_ilock() because + * generic_file_splice_write() takes the i_mutex itself. This, in theory, + * couuld cause lock inversions between the aio_write path and the splice path + * if someone is doing concurrent splice(2) based writes and write(2) based + * writes to the same inode. The only real way to fix this is to re-implement + * the generic code here with correct locking orders. + */ STATIC ssize_t xfs_file_splice_write( struct pipe_inode_info *pipe, @@ -331,7 +416,7 @@ xfs_file_splice_write( { struct inode *inode = outfilp->f_mapping->host; struct xfs_inode *ip = XFS_I(inode); - xfs_fsize_t isize, new_size; + xfs_fsize_t new_size; int ioflags = 0; ssize_t ret; @@ -355,27 +440,9 @@ xfs_file_splice_write( trace_xfs_file_splice_write(ip, count, *ppos, ioflags); ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags); - if (ret > 0) - XFS_STATS_ADD(xs_write_bytes, ret); - - isize = i_size_read(inode); - if (unlikely(ret < 0 && ret != -EFAULT && *ppos > isize)) - *ppos = isize; - - if (*ppos > ip->i_size) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - if (*ppos > ip->i_size) - ip->i_size = *ppos; - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } - if (ip->i_new_size) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - ip->i_new_size = 0; - if (ip->i_d.di_size > ip->i_size) - ip->i_d.di_size = ip->i_size; - xfs_iunlock(ip, XFS_ILOCK_EXCL); - } + xfs_aio_write_isize_update(inode, ppos, ret); + xfs_aio_write_newsize_update(ip); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return ret; } @@ -562,247 +629,314 @@ out_lock: return error; } +/* + * Common pre-write limit and setup checks. + * + * Returns with iolock held according to @iolock. + */ STATIC ssize_t -xfs_file_aio_write( - struct kiocb *iocb, - const struct iovec *iovp, - unsigned long nr_segs, - loff_t pos) +xfs_file_aio_write_checks( + struct file *file, + loff_t *pos, + size_t *count, + int *iolock) { - struct file *file = iocb->ki_filp; - struct address_space *mapping = file->f_mapping; - struct inode *inode = mapping->host; + struct inode *inode = file->f_mapping->host; struct xfs_inode *ip = XFS_I(inode); - struct xfs_mount *mp = ip->i_mount; - ssize_t ret = 0, error = 0; - int ioflags = 0; - xfs_fsize_t isize, new_size; - int iolock; - size_t ocount = 0, count; - int need_i_mutex; + xfs_fsize_t new_size; + int error = 0; - XFS_STATS_INC(xs_write_calls); + error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode)); + if (error) { + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL | *iolock); + *iolock = 0; + return error; + } - BUG_ON(iocb->ki_pos != pos); + new_size = *pos + *count; + if (new_size > ip->i_size) + ip->i_new_size = new_size; - if (unlikely(file->f_flags & O_DIRECT)) - ioflags |= IO_ISDIRECT; - if (file->f_mode & FMODE_NOCMTIME) - ioflags |= IO_INVIS; + if (likely(!(file->f_mode & FMODE_NOCMTIME))) + file_update_time(file); + + /* + * If the offset is beyond the size of the file, we need to zero any + * blocks that fall between the existing EOF and the start of this + * write. + */ + if (*pos > ip->i_size) + error = -xfs_zero_eof(ip, *pos, ip->i_size); - error = generic_segment_checks(iovp, &nr_segs, &ocount, VERIFY_READ); + xfs_rw_iunlock(ip, XFS_ILOCK_EXCL); if (error) return error; - count = ocount; - if (count == 0) - return 0; - - xfs_wait_for_freeze(mp, SB_FREEZE_WRITE); + /* + * If we're writing the file then make sure to clear the setuid and + * setgid bits if the process is not being run by root. This keeps + * people from modifying setuid and setgid binaries. + */ + return file_remove_suid(file); - if (XFS_FORCED_SHUTDOWN(mp)) - return -EIO; +} -relock: - if (ioflags & IO_ISDIRECT) { - iolock = XFS_IOLOCK_SHARED; - need_i_mutex = 0; - } else { - iolock = XFS_IOLOCK_EXCL; - need_i_mutex = 1; - mutex_lock(&inode->i_mutex); +/* + * xfs_file_dio_aio_write - handle direct IO writes + * + * Lock the inode appropriately to prepare for and issue a direct IO write. + * By separating it from the buffered write path we remove all the tricky to + * follow locking changes and looping. + * + * If there are cached pages or we're extending the file, we need IOLOCK_EXCL + * until we're sure the bytes at the new EOF have been zeroed and/or the cached + * pages are flushed out. + * + * In most cases the direct IO writes will be done holding IOLOCK_SHARED + * allowing them to be done in parallel with reads and other direct IO writes. + * However, if the IO is not aligned to filesystem blocks, the direct IO layer + * needs to do sub-block zeroing and that requires serialisation against other + * direct IOs to the same block. In this case we need to serialise the + * submission of the unaligned IOs so that we don't get racing block zeroing in + * the dio layer. To avoid the problem with aio, we also need to wait for + * outstanding IOs to complete so that unwritten extent conversion is completed + * before we try to map the overlapping block. This is currently implemented by + * hitting it with a big hammer (i.e. xfs_ioend_wait()). + * + * Returns with locks held indicated by @iolock and errors indicated by + * negative return values. + */ +STATIC ssize_t +xfs_file_dio_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos, + size_t ocount, + int *iolock) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + struct xfs_mount *mp = ip->i_mount; + ssize_t ret = 0; + size_t count = ocount; + int unaligned_io = 0; + struct xfs_buftarg *target = XFS_IS_REALTIME_INODE(ip) ? + mp->m_rtdev_targp : mp->m_ddev_targp; + + *iolock = 0; + if ((pos & target->bt_smask) || (count & target->bt_smask)) + return -XFS_ERROR(EINVAL); + + if ((pos & mp->m_blockmask) || ((pos + count) & mp->m_blockmask)) + unaligned_io = 1; + + if (unaligned_io || mapping->nrpages || pos > ip->i_size) + *iolock = XFS_IOLOCK_EXCL; + else + *iolock = XFS_IOLOCK_SHARED; + xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock); + + ret = xfs_file_aio_write_checks(file, &pos, &count, iolock); + if (ret) + return ret; + + if (mapping->nrpages) { + WARN_ON(*iolock != XFS_IOLOCK_EXCL); + ret = -xfs_flushinval_pages(ip, (pos & PAGE_CACHE_MASK), -1, + FI_REMAPF_LOCKED); + if (ret) + return ret; } - xfs_ilock(ip, XFS_ILOCK_EXCL|iolock); - -start: - error = -generic_write_checks(file, &pos, &count, - S_ISBLK(inode->i_mode)); - if (error) { - xfs_iunlock(ip, XFS_ILOCK_EXCL|iolock); - goto out_unlock_mutex; + /* + * If we are doing unaligned IO, wait for all other IO to drain, + * otherwise demote the lock if we had to flush cached pages + */ + if (unaligned_io) + xfs_ioend_wait(ip); + else if (*iolock == XFS_IOLOCK_EXCL) { + xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); + *iolock = XFS_IOLOCK_SHARED; } - if (ioflags & IO_ISDIRECT) { - xfs_buftarg_t *target = - XFS_IS_REALTIME_INODE(ip) ? - mp->m_rtdev_targp : mp->m_ddev_targp; + trace_xfs_file_direct_write(ip, count, iocb->ki_pos, 0); + ret = generic_file_direct_write(iocb, iovp, + &nr_segs, pos, &iocb->ki_pos, count, ocount); - if ((pos & target->bt_smask) || (count & target->bt_smask)) { - xfs_iunlock(ip, XFS_ILOCK_EXCL|iolock); - return XFS_ERROR(-EINVAL); - } + /* No fallback to buffered IO on errors for XFS. */ + ASSERT(ret < 0 || ret == count); + return ret; +} - if (!need_i_mutex && (mapping->nrpages || pos > ip->i_size)) { - xfs_iunlock(ip, XFS_ILOCK_EXCL|iolock); - iolock = XFS_IOLOCK_EXCL; - need_i_mutex = 1; - mutex_lock(&inode->i_mutex); - xfs_ilock(ip, XFS_ILOCK_EXCL|iolock); - goto start; - } - } +STATIC ssize_t +xfs_file_buffered_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos, + size_t ocount, + int *iolock) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + ssize_t ret; + int enospc = 0; + size_t count = ocount; - new_size = pos + count; - if (new_size > ip->i_size) - ip->i_new_size = new_size; + *iolock = XFS_IOLOCK_EXCL; + xfs_rw_ilock(ip, XFS_ILOCK_EXCL | *iolock); - if (likely(!(ioflags & IO_INVIS))) - file_update_time(file); + ret = xfs_file_aio_write_checks(file, &pos, &count, iolock); + if (ret) + return ret; + /* We can write back this queue in page reclaim */ + current->backing_dev_info = mapping->backing_dev_info; + +write_retry: + trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, 0); + ret = generic_file_buffered_write(iocb, iovp, nr_segs, + pos, &iocb->ki_pos, count, ret); /* - * If the offset is beyond the size of the file, we have a couple - * of things to do. First, if there is already space allocated - * we need to either create holes or zero the disk or ... - * - * If there is a page where the previous size lands, we need - * to zero it out up to the new size. + * if we just got an ENOSPC, flush the inode now we aren't holding any + * page locks and retry *once* */ - - if (pos > ip->i_size) { - error = xfs_zero_eof(ip, pos, ip->i_size); - if (error) { - xfs_iunlock(ip, XFS_ILOCK_EXCL); - goto out_unlock_internal; - } + if (ret == -ENOSPC && !enospc) { + ret = -xfs_flush_pages(ip, 0, -1, 0, FI_NONE); + if (ret) + return ret; + enospc = 1; + goto write_retry; } - xfs_iunlock(ip, XFS_ILOCK_EXCL); + current->backing_dev_info = NULL; + return ret; +} - /* - * If we're writing the file then make sure to clear the - * setuid and setgid bits if the process is not being run - * by root. This keeps people from modifying setuid and - * setgid binaries. - */ - error = -file_remove_suid(file); - if (unlikely(error)) - goto out_unlock_internal; +STATIC ssize_t +xfs_file_aio_write( + struct kiocb *iocb, + const struct iovec *iovp, + unsigned long nr_segs, + loff_t pos) +{ + struct file *file = iocb->ki_filp; + struct address_space *mapping = file->f_mapping; + struct inode *inode = mapping->host; + struct xfs_inode *ip = XFS_I(inode); + ssize_t ret; + int iolock; + size_t ocount = 0; - /* We can write back this queue in page reclaim */ - current->backing_dev_info = mapping->backing_dev_info; + XFS_STATS_INC(xs_write_calls); - if ((ioflags & IO_ISDIRECT)) { - if (mapping->nrpages) { - WARN_ON(need_i_mutex == 0); - error = xfs_flushinval_pages(ip, - (pos & PAGE_CACHE_MASK), - -1, FI_REMAPF_LOCKED); - if (error) - goto out_unlock_internal; - } + BUG_ON(iocb->ki_pos != pos); - if (need_i_mutex) { - /* demote the lock now the cached pages are gone */ - xfs_ilock_demote(ip, XFS_IOLOCK_EXCL); - mutex_unlock(&inode->i_mutex); + ret = generic_segment_checks(iovp, &nr_segs, &ocount, VERIFY_READ); + if (ret) + return ret; - iolock = XFS_IOLOCK_SHARED; - need_i_mutex = 0; - } + if (ocount == 0) + return 0; - trace_xfs_file_direct_write(ip, count, iocb->ki_pos, ioflags); - ret = generic_file_direct_write(iocb, iovp, - &nr_segs, pos, &iocb->ki_pos, count, ocount); + xfs_wait_for_freeze(ip->i_mount, SB_FREEZE_WRITE); - /* - * direct-io write to a hole: fall through to buffered I/O - * for completing the rest of the request. - */ - if (ret >= 0 && ret != count) { - XFS_STATS_ADD(xs_write_bytes, ret); + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) + return -EIO; - pos += ret; - count -= ret; + if (unlikely(file->f_flags & O_DIRECT)) + ret = xfs_file_dio_aio_write(iocb, iovp, nr_segs, pos, + ocount, &iolock); + else + ret = xfs_file_buffered_aio_write(iocb, iovp, nr_segs, pos, + ocount, &iolock); - ioflags &= ~IO_ISDIRECT; - xfs_iunlock(ip, iolock); - goto relock; - } - } else { - int enospc = 0; - ssize_t ret2 = 0; + xfs_aio_write_isize_update(inode, &iocb->ki_pos, ret); -write_retry: - trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, ioflags); - ret2 = generic_file_buffered_write(iocb, iovp, nr_segs, - pos, &iocb->ki_pos, count, ret); - /* - * if we just got an ENOSPC, flush the inode now we - * aren't holding any page locks and retry *once* - */ - if (ret2 == -ENOSPC && !enospc) { - error = xfs_flush_pages(ip, 0, -1, 0, FI_NONE); - if (error) - goto out_unlock_internal; - enospc = 1; - goto write_retry; - } - ret = ret2; - } + if (ret <= 0) + goto out_unlock; - current->backing_dev_info = NULL; + /* Handle various SYNC-type writes */ + if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) { + loff_t end = pos + ret - 1; + int error, error2; - isize = i_size_read(inode); - if (unlikely(ret < 0 && ret != -EFAULT && iocb->ki_pos > isize)) - iocb->ki_pos = isize; + xfs_rw_iunlock(ip, iolock); + error = filemap_write_and_wait_range(mapping, pos, end); + xfs_rw_ilock(ip, iolock); - if (iocb->ki_pos > ip->i_size) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - if (iocb->ki_pos > ip->i_size) - ip->i_size = iocb->ki_pos; - xfs_iunlock(ip, XFS_ILOCK_EXCL); + error2 = -xfs_file_fsync(file, + (file->f_flags & __O_SYNC) ? 0 : 1); + if (error) + ret = error; + else if (error2) + ret = error2; } - error = -ret; - if (ret <= 0) - goto out_unlock_internal; +out_unlock: + xfs_aio_write_newsize_update(ip); + xfs_rw_iunlock(ip, iolock); + return ret; +} - XFS_STATS_ADD(xs_write_bytes, ret); +STATIC long +xfs_file_fallocate( + struct file *file, + int mode, + loff_t offset, + loff_t len) +{ + struct inode *inode = file->f_path.dentry->d_inode; + long error; + loff_t new_size = 0; + xfs_flock64_t bf; + xfs_inode_t *ip = XFS_I(inode); + int cmd = XFS_IOC_RESVSP; - /* Handle various SYNC-type writes */ - if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) { - loff_t end = pos + ret - 1; - int error2; + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + return -EOPNOTSUPP; - xfs_iunlock(ip, iolock); - if (need_i_mutex) - mutex_unlock(&inode->i_mutex); + bf.l_whence = 0; + bf.l_start = offset; + bf.l_len = len; - error2 = filemap_write_and_wait_range(mapping, pos, end); - if (!error) - error = error2; - if (need_i_mutex) - mutex_lock(&inode->i_mutex); - xfs_ilock(ip, iolock); + xfs_ilock(ip, XFS_IOLOCK_EXCL); - error2 = -xfs_file_fsync(file, - (file->f_flags & __O_SYNC) ? 0 : 1); - if (!error) - error = error2; + if (mode & FALLOC_FL_PUNCH_HOLE) + cmd = XFS_IOC_UNRESVSP; + + /* check the new inode size is valid before allocating */ + if (!(mode & FALLOC_FL_KEEP_SIZE) && + offset + len > i_size_read(inode)) { + new_size = offset + len; + error = inode_newsize_ok(inode, new_size); + if (error) + goto out_unlock; } - out_unlock_internal: - if (ip->i_new_size) { - xfs_ilock(ip, XFS_ILOCK_EXCL); - ip->i_new_size = 0; - /* - * If this was a direct or synchronous I/O that failed (such - * as ENOSPC) then part of the I/O may have been written to - * disk before the error occured. In this case the on-disk - * file size may have been adjusted beyond the in-memory file - * size and now needs to be truncated back. - */ - if (ip->i_d.di_size > ip->i_size) - ip->i_d.di_size = ip->i_size; - xfs_iunlock(ip, XFS_ILOCK_EXCL); + error = -xfs_change_file_space(ip, cmd, &bf, 0, XFS_ATTR_NOLOCK); + if (error) + goto out_unlock; + + /* Change file size if needed */ + if (new_size) { + struct iattr iattr; + + iattr.ia_valid = ATTR_SIZE; + iattr.ia_size = new_size; + error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); } - xfs_iunlock(ip, iolock); - out_unlock_mutex: - if (need_i_mutex) - mutex_unlock(&inode->i_mutex); - return -error; + +out_unlock: + xfs_iunlock(ip, XFS_IOLOCK_EXCL); + return error; } + STATIC int xfs_file_open( struct inode *inode, @@ -921,6 +1055,7 @@ const struct file_operations xfs_file_operations = { .open = xfs_file_open, .release = xfs_file_release, .fsync = xfs_file_fsync, + .fallocate = xfs_file_fallocate, }; const struct file_operations xfs_dir_file_operations = { diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index ad442d9e392e..b06ede1d0bed 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -39,6 +39,7 @@ #include "xfs_dfrag.h" #include "xfs_fsops.h" #include "xfs_vnodeops.h" +#include "xfs_discard.h" #include "xfs_quota.h" #include "xfs_inode_item.h" #include "xfs_export.h" @@ -1294,6 +1295,8 @@ xfs_file_ioctl( trace_xfs_file_ioctl(ip); switch (cmd) { + case FITRIM: + return xfs_ioc_trim(mp, arg); case XFS_IOC_ALLOCSP: case XFS_IOC_FREESP: case XFS_IOC_RESVSP: diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 94d5fd6a2973..bd5727852fd6 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -46,7 +46,6 @@ #include <linux/namei.h> #include <linux/posix_acl.h> #include <linux/security.h> -#include <linux/falloc.h> #include <linux/fiemap.h> #include <linux/slab.h> @@ -505,58 +504,6 @@ xfs_vn_setattr( return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0); } -STATIC long -xfs_vn_fallocate( - struct inode *inode, - int mode, - loff_t offset, - loff_t len) -{ - long error; - loff_t new_size = 0; - xfs_flock64_t bf; - xfs_inode_t *ip = XFS_I(inode); - - /* preallocation on directories not yet supported */ - error = -ENODEV; - if (S_ISDIR(inode->i_mode)) - goto out_error; - - bf.l_whence = 0; - bf.l_start = offset; - bf.l_len = len; - - xfs_ilock(ip, XFS_IOLOCK_EXCL); - - /* check the new inode size is valid before allocating */ - if (!(mode & FALLOC_FL_KEEP_SIZE) && - offset + len > i_size_read(inode)) { - new_size = offset + len; - error = inode_newsize_ok(inode, new_size); - if (error) - goto out_unlock; - } - - error = -xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf, - 0, XFS_ATTR_NOLOCK); - if (error) - goto out_unlock; - - /* Change file size if needed */ - if (new_size) { - struct iattr iattr; - - iattr.ia_valid = ATTR_SIZE; - iattr.ia_size = new_size; - error = -xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK); - } - -out_unlock: - xfs_iunlock(ip, XFS_IOLOCK_EXCL); -out_error: - return error; -} - #define XFS_FIEMAP_FLAGS (FIEMAP_FLAG_SYNC|FIEMAP_FLAG_XATTR) /* @@ -650,7 +597,6 @@ static const struct inode_operations xfs_inode_operations = { .getxattr = generic_getxattr, .removexattr = generic_removexattr, .listxattr = xfs_vn_listxattr, - .fallocate = xfs_vn_fallocate, .fiemap = xfs_vn_fiemap, }; diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h index 214ddd71ff79..096494997747 100644 --- a/fs/xfs/linux-2.6/xfs_linux.h +++ b/fs/xfs/linux-2.6/xfs_linux.h @@ -37,7 +37,6 @@ #include <kmem.h> #include <mrlock.h> -#include <sv.h> #include <time.h> #include <support/debug.h> diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 064f964d4f3c..9731898083ae 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -606,7 +606,8 @@ xfs_blkdev_get( { int error = 0; - *bdevp = open_bdev_exclusive(name, FMODE_READ|FMODE_WRITE, mp); + *bdevp = blkdev_get_by_path(name, FMODE_READ|FMODE_WRITE|FMODE_EXCL, + mp); if (IS_ERR(*bdevp)) { error = PTR_ERR(*bdevp); printk("XFS: Invalid device [%s], error=%d\n", name, error); @@ -620,7 +621,7 @@ xfs_blkdev_put( struct block_device *bdev) { if (bdev) - close_bdev_exclusive(bdev, FMODE_READ|FMODE_WRITE); + blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL); } /* @@ -834,8 +835,11 @@ xfsaild_wakeup( struct xfs_ail *ailp, xfs_lsn_t threshold_lsn) { - ailp->xa_target = threshold_lsn; - wake_up_process(ailp->xa_task); + /* only ever move the target forwards */ + if (XFS_LSN_CMP(threshold_lsn, ailp->xa_target) > 0) { + ailp->xa_target = threshold_lsn; + wake_up_process(ailp->xa_task); + } } STATIC int @@ -847,8 +851,17 @@ xfsaild( long tout = 0; /* milliseconds */ while (!kthread_should_stop()) { - schedule_timeout_interruptible(tout ? - msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); + /* + * for short sleeps indicating congestion, don't allow us to + * get woken early. Otherwise all we do is bang on the AIL lock + * without making progress. + */ + if (tout && tout <= 20) + __set_current_state(TASK_KILLABLE); + else + __set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(tout ? + msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); /* swsusp */ try_to_freeze(); @@ -935,7 +948,7 @@ out_reclaim: * Slab object creation initialisation for the XFS inode. * This covers only the idempotent fields in the XFS inode; * all other fields need to be initialised on allocation - * from the slab. This avoids the need to repeatedly intialise + * from the slab. This avoids the need to repeatedly initialise * fields in the xfs inode that left in the initialise state * when freeing the inode. */ @@ -1118,6 +1131,8 @@ xfs_fs_evict_inode( */ ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino); + lockdep_set_class_and_name(&ip->i_iolock.mr_lock, + &xfs_iolock_reclaimable, "xfs_iolock_reclaimable"); xfs_inactive(ip); } @@ -1399,7 +1414,7 @@ xfs_fs_freeze( xfs_save_resvblks(mp); xfs_quiesce_attr(mp); - return -xfs_fs_log_dummy(mp, SYNC_WAIT); + return -xfs_fs_log_dummy(mp); } STATIC int diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index afb0d7cfad1c..e22f0057d21f 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -53,14 +53,30 @@ xfs_inode_ag_walk_grab( { struct inode *inode = VFS_I(ip); + ASSERT(rcu_read_lock_held()); + + /* + * check for stale RCU freed inode + * + * If the inode has been reallocated, it doesn't matter if it's not in + * the AG we are walking - we are walking for writeback, so if it + * passes all the "valid inode" checks and is dirty, then we'll write + * it back anyway. If it has been reallocated and still being + * initialised, the XFS_INEW check below will catch it. + */ + spin_lock(&ip->i_flags_lock); + if (!ip->i_ino) + goto out_unlock_noent; + + /* avoid new or reclaimable inodes. Leave for reclaim code to flush */ + if (__xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM)) + goto out_unlock_noent; + spin_unlock(&ip->i_flags_lock); + /* nothing to sync during shutdown */ if (XFS_FORCED_SHUTDOWN(ip->i_mount)) return EFSCORRUPTED; - /* avoid new or reclaimable inodes. Leave for reclaim code to flush */ - if (xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM)) - return ENOENT; - /* If we can't grab the inode, it must on it's way to reclaim. */ if (!igrab(inode)) return ENOENT; @@ -72,6 +88,10 @@ xfs_inode_ag_walk_grab( /* inode is valid */ return 0; + +out_unlock_noent: + spin_unlock(&ip->i_flags_lock); + return ENOENT; } STATIC int @@ -98,12 +118,12 @@ restart: int error = 0; int i; - read_lock(&pag->pag_ici_lock); + rcu_read_lock(); nr_found = radix_tree_gang_lookup(&pag->pag_ici_root, (void **)batch, first_index, XFS_LOOKUP_BATCH); if (!nr_found) { - read_unlock(&pag->pag_ici_lock); + rcu_read_unlock(); break; } @@ -118,18 +138,26 @@ restart: batch[i] = NULL; /* - * Update the index for the next lookup. Catch overflows - * into the next AG range which can occur if we have inodes - * in the last block of the AG and we are currently - * pointing to the last inode. + * Update the index for the next lookup. Catch + * overflows into the next AG range which can occur if + * we have inodes in the last block of the AG and we + * are currently pointing to the last inode. + * + * Because we may see inodes that are from the wrong AG + * due to RCU freeing and reallocation, only update the + * index if it lies in this AG. It was a race that lead + * us to see this inode, so another lookup from the + * same index will not find it again. */ + if (XFS_INO_TO_AGNO(mp, ip->i_ino) != pag->pag_agno) + continue; first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) done = 1; } /* unlock now we've grabbed the inodes. */ - read_unlock(&pag->pag_ici_lock); + rcu_read_unlock(); for (i = 0; i < nr_found; i++) { if (!batch[i]) @@ -334,7 +362,7 @@ xfs_quiesce_data( /* mark the log as covered if needed */ if (xfs_log_need_covered(mp)) - error2 = xfs_fs_log_dummy(mp, SYNC_WAIT); + error2 = xfs_fs_log_dummy(mp); /* flush data-only devices */ if (mp->m_rtdev_targp) @@ -475,13 +503,14 @@ xfs_sync_worker( int error; if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { - xfs_log_force(mp, 0); - xfs_reclaim_inodes(mp, 0); /* dgc: errors ignored here */ - error = xfs_qm_sync(mp, SYNC_TRYLOCK); if (mp->m_super->s_frozen == SB_UNFROZEN && xfs_log_need_covered(mp)) - error = xfs_fs_log_dummy(mp, 0); + error = xfs_fs_log_dummy(mp); + else + xfs_log_force(mp, 0); + xfs_reclaim_inodes(mp, 0); + error = xfs_qm_sync(mp, SYNC_TRYLOCK); } mp->m_sync_seq++; wake_up(&mp->m_wait_single_sync_task); @@ -592,12 +621,12 @@ xfs_inode_set_reclaim_tag( struct xfs_perag *pag; pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); - write_lock(&pag->pag_ici_lock); + spin_lock(&pag->pag_ici_lock); spin_lock(&ip->i_flags_lock); __xfs_inode_set_reclaim_tag(pag, ip); __xfs_iflags_set(ip, XFS_IRECLAIMABLE); spin_unlock(&ip->i_flags_lock); - write_unlock(&pag->pag_ici_lock); + spin_unlock(&pag->pag_ici_lock); xfs_perag_put(pag); } @@ -639,9 +668,14 @@ xfs_reclaim_inode_grab( struct xfs_inode *ip, int flags) { + ASSERT(rcu_read_lock_held()); + + /* quick check for stale RCU freed inode */ + if (!ip->i_ino) + return 1; /* - * do some unlocked checks first to avoid unnecceary lock traffic. + * do some unlocked checks first to avoid unnecessary lock traffic. * The first is a flush lock check, the second is a already in reclaim * check. Only do these checks if we are not going to block on locks. */ @@ -654,11 +688,16 @@ xfs_reclaim_inode_grab( * The radix tree lock here protects a thread in xfs_iget from racing * with us starting reclaim on the inode. Once we have the * XFS_IRECLAIM flag set it will not touch us. + * + * Due to RCU lookup, we may find inodes that have been freed and only + * have XFS_IRECLAIM set. Indeed, we may see reallocated inodes that + * aren't candidates for reclaim at all, so we must check the + * XFS_IRECLAIMABLE is set first before proceeding to reclaim. */ spin_lock(&ip->i_flags_lock); - ASSERT_ALWAYS(__xfs_iflags_test(ip, XFS_IRECLAIMABLE)); - if (__xfs_iflags_test(ip, XFS_IRECLAIM)) { - /* ignore as it is already under reclaim */ + if (!__xfs_iflags_test(ip, XFS_IRECLAIMABLE) || + __xfs_iflags_test(ip, XFS_IRECLAIM)) { + /* not a reclaim candidate. */ spin_unlock(&ip->i_flags_lock); return 1; } @@ -795,12 +834,12 @@ reclaim: * added to the tree assert that it's been there before to catch * problems with the inode life time early on. */ - write_lock(&pag->pag_ici_lock); + spin_lock(&pag->pag_ici_lock); if (!radix_tree_delete(&pag->pag_ici_root, XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino))) ASSERT(0); __xfs_inode_clear_reclaim(pag, ip); - write_unlock(&pag->pag_ici_lock); + spin_unlock(&pag->pag_ici_lock); /* * Here we do an (almost) spurious inode lock in order to coordinate @@ -864,14 +903,14 @@ restart: struct xfs_inode *batch[XFS_LOOKUP_BATCH]; int i; - write_lock(&pag->pag_ici_lock); + rcu_read_lock(); nr_found = radix_tree_gang_lookup_tag( &pag->pag_ici_root, (void **)batch, first_index, XFS_LOOKUP_BATCH, XFS_ICI_RECLAIM_TAG); if (!nr_found) { - write_unlock(&pag->pag_ici_lock); + rcu_read_unlock(); break; } @@ -891,14 +930,24 @@ restart: * occur if we have inodes in the last block of * the AG and we are currently pointing to the * last inode. + * + * Because we may see inodes that are from the + * wrong AG due to RCU freeing and + * reallocation, only update the index if it + * lies in this AG. It was a race that lead us + * to see this inode, so another lookup from + * the same index will not find it again. */ + if (XFS_INO_TO_AGNO(mp, ip->i_ino) != + pag->pag_agno) + continue; first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1); if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) done = 1; } /* unlock now we've grabbed the inodes. */ - write_unlock(&pag->pag_ici_lock); + rcu_read_unlock(); for (i = 0; i < nr_found; i++) { if (!batch[i]) diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c index 7bb5092d6ae4..ee3cee097e7e 100644 --- a/fs/xfs/linux-2.6/xfs_sysctl.c +++ b/fs/xfs/linux-2.6/xfs_sysctl.c @@ -18,6 +18,7 @@ #include "xfs.h" #include <linux/sysctl.h> #include <linux/proc_fs.h> +#include "xfs_error.h" static struct ctl_table_header *xfs_table_header; @@ -51,6 +52,26 @@ xfs_stats_clear_proc_handler( return ret; } + +STATIC int +xfs_panic_mask_proc_handler( + ctl_table *ctl, + int write, + void __user *buffer, + size_t *lenp, + loff_t *ppos) +{ + int ret, *valp = ctl->data; + + ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos); + if (!ret && write) { + xfs_panic_mask = *valp; +#ifdef DEBUG + xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES); +#endif + } + return ret; +} #endif /* CONFIG_PROC_FS */ static ctl_table xfs_table[] = { @@ -77,7 +98,7 @@ static ctl_table xfs_table[] = { .data = &xfs_params.panic_mask.val, .maxlen = sizeof(int), .mode = 0644, - .proc_handler = proc_dointvec_minmax, + .proc_handler = xfs_panic_mask_proc_handler, .extra1 = &xfs_params.panic_mask.min, .extra2 = &xfs_params.panic_mask.max }, diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index acef2e98c594..2d0bcb479075 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -766,8 +766,8 @@ DECLARE_EVENT_CLASS(xfs_loggrant_class, __field(int, curr_res) __field(int, unit_res) __field(unsigned int, flags) - __field(void *, reserve_headq) - __field(void *, write_headq) + __field(int, reserveq) + __field(int, writeq) __field(int, grant_reserve_cycle) __field(int, grant_reserve_bytes) __field(int, grant_write_cycle) @@ -784,19 +784,21 @@ DECLARE_EVENT_CLASS(xfs_loggrant_class, __entry->curr_res = tic->t_curr_res; __entry->unit_res = tic->t_unit_res; __entry->flags = tic->t_flags; - __entry->reserve_headq = log->l_reserve_headq; - __entry->write_headq = log->l_write_headq; - __entry->grant_reserve_cycle = log->l_grant_reserve_cycle; - __entry->grant_reserve_bytes = log->l_grant_reserve_bytes; - __entry->grant_write_cycle = log->l_grant_write_cycle; - __entry->grant_write_bytes = log->l_grant_write_bytes; + __entry->reserveq = list_empty(&log->l_reserveq); + __entry->writeq = list_empty(&log->l_writeq); + xlog_crack_grant_head(&log->l_grant_reserve_head, + &__entry->grant_reserve_cycle, + &__entry->grant_reserve_bytes); + xlog_crack_grant_head(&log->l_grant_write_head, + &__entry->grant_write_cycle, + &__entry->grant_write_bytes); __entry->curr_cycle = log->l_curr_cycle; __entry->curr_block = log->l_curr_block; - __entry->tail_lsn = log->l_tail_lsn; + __entry->tail_lsn = atomic64_read(&log->l_tail_lsn); ), TP_printk("dev %d:%d type %s t_ocnt %u t_cnt %u t_curr_res %u " - "t_unit_res %u t_flags %s reserve_headq 0x%p " - "write_headq 0x%p grant_reserve_cycle %d " + "t_unit_res %u t_flags %s reserveq %s " + "writeq %s grant_reserve_cycle %d " "grant_reserve_bytes %d grant_write_cycle %d " "grant_write_bytes %d curr_cycle %d curr_block %d " "tail_cycle %d tail_block %d", @@ -807,8 +809,8 @@ DECLARE_EVENT_CLASS(xfs_loggrant_class, __entry->curr_res, __entry->unit_res, __print_flags(__entry->flags, "|", XLOG_TIC_FLAGS), - __entry->reserve_headq, - __entry->write_headq, + __entry->reserveq ? "empty" : "active", + __entry->writeq ? "empty" : "active", __entry->grant_reserve_cycle, __entry->grant_reserve_bytes, __entry->grant_write_cycle, @@ -835,6 +837,7 @@ DEFINE_LOGGRANT_EVENT(xfs_log_grant_sleep1); DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake1); DEFINE_LOGGRANT_EVENT(xfs_log_grant_sleep2); DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake2); +DEFINE_LOGGRANT_EVENT(xfs_log_grant_wake_up); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_enter); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_exit); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_error); @@ -842,6 +845,7 @@ DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_sleep1); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake1); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_sleep2); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake2); +DEFINE_LOGGRANT_EVENT(xfs_log_regrant_write_wake_up); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_enter); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_exit); DEFINE_LOGGRANT_EVENT(xfs_log_regrant_reserve_sub); @@ -935,10 +939,10 @@ DEFINE_PAGE_EVENT(xfs_writepage); DEFINE_PAGE_EVENT(xfs_releasepage); DEFINE_PAGE_EVENT(xfs_invalidatepage); -DECLARE_EVENT_CLASS(xfs_iomap_class, +DECLARE_EVENT_CLASS(xfs_imap_class, TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, - int flags, struct xfs_bmbt_irec *irec), - TP_ARGS(ip, offset, count, flags, irec), + int type, struct xfs_bmbt_irec *irec), + TP_ARGS(ip, offset, count, type, irec), TP_STRUCT__entry( __field(dev_t, dev) __field(xfs_ino_t, ino) @@ -946,7 +950,7 @@ DECLARE_EVENT_CLASS(xfs_iomap_class, __field(loff_t, new_size) __field(loff_t, offset) __field(size_t, count) - __field(int, flags) + __field(int, type) __field(xfs_fileoff_t, startoff) __field(xfs_fsblock_t, startblock) __field(xfs_filblks_t, blockcount) @@ -958,13 +962,13 @@ DECLARE_EVENT_CLASS(xfs_iomap_class, __entry->new_size = ip->i_new_size; __entry->offset = offset; __entry->count = count; - __entry->flags = flags; + __entry->type = type; __entry->startoff = irec ? irec->br_startoff : 0; __entry->startblock = irec ? irec->br_startblock : 0; __entry->blockcount = irec ? irec->br_blockcount : 0; ), TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " - "offset 0x%llx count %zd flags %s " + "offset 0x%llx count %zd type %s " "startoff 0x%llx startblock %lld blockcount 0x%llx", MAJOR(__entry->dev), MINOR(__entry->dev), __entry->ino, @@ -972,20 +976,21 @@ DECLARE_EVENT_CLASS(xfs_iomap_class, __entry->new_size, __entry->offset, __entry->count, - __print_flags(__entry->flags, "|", BMAPI_FLAGS), + __print_symbolic(__entry->type, XFS_IO_TYPES), __entry->startoff, (__int64_t)__entry->startblock, __entry->blockcount) ) #define DEFINE_IOMAP_EVENT(name) \ -DEFINE_EVENT(xfs_iomap_class, name, \ +DEFINE_EVENT(xfs_imap_class, name, \ TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count, \ - int flags, struct xfs_bmbt_irec *irec), \ - TP_ARGS(ip, offset, count, flags, irec)) -DEFINE_IOMAP_EVENT(xfs_iomap_enter); -DEFINE_IOMAP_EVENT(xfs_iomap_found); -DEFINE_IOMAP_EVENT(xfs_iomap_alloc); + int type, struct xfs_bmbt_irec *irec), \ + TP_ARGS(ip, offset, count, type, irec)) +DEFINE_IOMAP_EVENT(xfs_map_blocks_found); +DEFINE_IOMAP_EVENT(xfs_map_blocks_alloc); +DEFINE_IOMAP_EVENT(xfs_get_blocks_found); +DEFINE_IOMAP_EVENT(xfs_get_blocks_alloc); DECLARE_EVENT_CLASS(xfs_simple_io_class, TP_PROTO(struct xfs_inode *ip, xfs_off_t offset, ssize_t count), @@ -1022,6 +1027,7 @@ DEFINE_EVENT(xfs_simple_io_class, name, \ TP_ARGS(ip, offset, count)) DEFINE_SIMPLE_IO_EVENT(xfs_delalloc_enospc); DEFINE_SIMPLE_IO_EVENT(xfs_unwritten_convert); +DEFINE_SIMPLE_IO_EVENT(xfs_get_blocks_notfound); TRACE_EVENT(xfs_itruncate_start, @@ -1420,6 +1426,7 @@ DEFINE_EVENT(xfs_alloc_class, name, \ TP_PROTO(struct xfs_alloc_arg *args), \ TP_ARGS(args)) DEFINE_ALLOC_EVENT(xfs_alloc_exact_done); +DEFINE_ALLOC_EVENT(xfs_alloc_exact_notfound); DEFINE_ALLOC_EVENT(xfs_alloc_exact_error); DEFINE_ALLOC_EVENT(xfs_alloc_near_nominleft); DEFINE_ALLOC_EVENT(xfs_alloc_near_first); @@ -1752,6 +1759,39 @@ DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_recover); DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_cancel); DEFINE_LOG_RECOVER_INO_ITEM(xfs_log_recover_inode_skip); +DECLARE_EVENT_CLASS(xfs_discard_class, + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, + xfs_agblock_t agbno, xfs_extlen_t len), + TP_ARGS(mp, agno, agbno, len), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(xfs_agnumber_t, agno) + __field(xfs_agblock_t, agbno) + __field(xfs_extlen_t, len) + ), + TP_fast_assign( + __entry->dev = mp->m_super->s_dev; + __entry->agno = agno; + __entry->agbno = agbno; + __entry->len = len; + ), + TP_printk("dev %d:%d agno %u agbno %u len %u\n", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->agno, + __entry->agbno, + __entry->len) +) + +#define DEFINE_DISCARD_EVENT(name) \ +DEFINE_EVENT(xfs_discard_class, name, \ + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, \ + xfs_agblock_t agbno, xfs_extlen_t len), \ + TP_ARGS(mp, agno, agbno, len)) +DEFINE_DISCARD_EVENT(xfs_discard_extent); +DEFINE_DISCARD_EVENT(xfs_discard_toosmall); +DEFINE_DISCARD_EVENT(xfs_discard_exclude); +DEFINE_DISCARD_EVENT(xfs_discard_busy); + #endif /* _TRACE_XFS_H */ #undef TRACE_INCLUDE_PATH |