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authorAlex Elder <aelder@sgi.com>2011-07-18 18:14:09 +0000
committerAlex Elder <aelder@sgi.com>2011-07-26 22:05:34 -0500
commit1c4f33296e8e79a6bbfffc8457d547ffc31d5dee (patch)
tree67934ff868c5a9fb54841fc866adaf741868f9dc /fs
parentb0189cd087aa82bd23277cb5c8960ab030e13e5c (diff)
downloadlinux-1c4f33296e8e79a6bbfffc8457d547ffc31d5dee.tar.bz2
xfs: encapsulate a block of debug code
Pull into a helper function some debug-only code that validates a xfs_da_blkinfo structure that's been read from disk. Signed-off-by: Alex Elder <aelder@sgi.com> Reviewed-by: Christoph Hellwig <hch@infradead.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/xfs_da_btree.c32
1 files changed, 21 insertions, 11 deletions
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index 2925726529f8..5bfcb8779f9f 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -692,6 +692,24 @@ xfs_da_join(xfs_da_state_t *state)
return(error);
}
+#ifdef DEBUG
+static void
+xfs_da_blkinfo_onlychild_validate(struct xfs_da_blkinfo *blkinfo, __u16 level)
+{
+ __be16 magic = blkinfo->magic;
+
+ if (level == 1) {
+ ASSERT(magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
+ magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC));
+ } else
+ ASSERT(magic == cpu_to_be16(XFS_DA_NODE_MAGIC));
+ ASSERT(!blkinfo->forw);
+ ASSERT(!blkinfo->back);
+}
+#else /* !DEBUG */
+#define xfs_da_blkinfo_onlychild_validate(blkinfo, level)
+#endif /* !DEBUG */
+
/*
* We have only one entry in the root. Copy the only remaining child of
* the old root to block 0 as the new root node.
@@ -700,8 +718,6 @@ STATIC int
xfs_da_root_join(xfs_da_state_t *state, xfs_da_state_blk_t *root_blk)
{
xfs_da_intnode_t *oldroot;
- /* REFERENCED */
- xfs_da_blkinfo_t *blkinfo;
xfs_da_args_t *args;
xfs_dablk_t child;
xfs_dabuf_t *bp;
@@ -732,15 +748,9 @@ xfs_da_root_join(xfs_da_state_t *state, xfs_da_state_blk_t *root_blk)
if (error)
return(error);
ASSERT(bp != NULL);
- blkinfo = bp->data;
- if (be16_to_cpu(oldroot->hdr.level) == 1) {
- ASSERT(blkinfo->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
- blkinfo->magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC));
- } else {
- ASSERT(blkinfo->magic == cpu_to_be16(XFS_DA_NODE_MAGIC));
- }
- ASSERT(!blkinfo->forw);
- ASSERT(!blkinfo->back);
+ xfs_da_blkinfo_onlychild_validate(bp->data,
+ be16_to_cpu(oldroot->hdr.level));
+
memcpy(root_blk->bp->data, bp->data, state->blocksize);
xfs_da_log_buf(args->trans, root_blk->bp, 0, state->blocksize - 1);
error = xfs_da_shrink_inode(args, child, bp);