From b64f3a390d3477517cbff7d613e551705540769b Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 13 Nov 2012 16:40:27 -0600 Subject: xfs: use btree block initialisation functions in growfs Factor xfs_btree_init_block() to be independent of the btree cursor, and use the function to initialise btree blocks in the growfs code. This makes adding support for different format btree blocks simple. Signed-off-by: Dave Chinner Reviewed-by Rich Johnston Signed-off-by: Ben Myers --- fs/xfs/xfs_btree.c | 33 ++++++++++++++++++++++++--------- 1 file changed, 24 insertions(+), 9 deletions(-) (limited to 'fs/xfs/xfs_btree.c') diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index e53e317b1582..121ea99e615a 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -853,18 +853,22 @@ xfs_btree_set_sibling( } } -STATIC void +void xfs_btree_init_block( - struct xfs_btree_cur *cur, - int level, - int numrecs, - struct xfs_btree_block *new) /* new block */ + struct xfs_mount *mp, + struct xfs_buf *bp, + __u32 magic, + __u16 level, + __u16 numrecs, + unsigned int flags) { - new->bb_magic = cpu_to_be32(xfs_magics[cur->bc_btnum]); + struct xfs_btree_block *new = XFS_BUF_TO_BLOCK(bp); + + new->bb_magic = cpu_to_be32(magic); new->bb_level = cpu_to_be16(level); new->bb_numrecs = cpu_to_be16(numrecs); - if (cur->bc_flags & XFS_BTREE_LONG_PTRS) { + if (flags & XFS_BTREE_LONG_PTRS) { new->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO); new->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO); } else { @@ -873,6 +877,17 @@ xfs_btree_init_block( } } +STATIC void +xfs_btree_init_block_cur( + struct xfs_btree_cur *cur, + int level, + int numrecs, + struct xfs_buf *bp) +{ + xfs_btree_init_block(cur->bc_mp, bp, xfs_magics[cur->bc_btnum], + level, numrecs, cur->bc_flags); +} + /* * Return true if ptr is the last record in the btree and * we need to track updateѕ to this record. The decision @@ -2183,7 +2198,7 @@ xfs_btree_split( goto error0; /* Fill in the btree header for the new right block. */ - xfs_btree_init_block(cur, xfs_btree_get_level(left), 0, right); + xfs_btree_init_block_cur(cur, xfs_btree_get_level(left), 0, rbp); /* * Split the entries between the old and the new block evenly. @@ -2492,7 +2507,7 @@ xfs_btree_new_root( nptr = 2; } /* Fill in the new block's btree header and log it. */ - xfs_btree_init_block(cur, cur->bc_nlevels, 2, new); + xfs_btree_init_block_cur(cur, cur->bc_nlevels, 2, nbp); xfs_btree_log_block(cur, nbp, XFS_BB_ALL_BITS); ASSERT(!xfs_btree_ptr_is_null(cur, &lptr) && !xfs_btree_ptr_is_null(cur, &rptr)); -- cgit v1.2.3-59-g8ed1b