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| author | Eric Sandeen <sandeen@redhat.com> | 2012-03-28 00:40:26 +0400 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2013-06-20 22:26:09 +0400 |
| commit | 427d9fe233ccec3a293be4bcf07f9bac12463a99 (patch) | |
| tree | fa4fe5c810a10785d8a11f8f80c6e27c7e20d375 /fs/xfs/xfs_bmap_btree.h | |
| parent | 39a45d8463d98ea57347b871641136be64b216a9 (diff) | |
| download | linux-427d9fe233ccec3a293be4bcf07f9bac12463a99.tar.xz | |
xfs: check on-disk (not incore) btree root size in dfrag.c
xfs_swap_extents_check_format() contains checks to make sure that
original and the temporary files during defrag are compatible;
Gabriel VLASIU ran into a case where xfs_fsr returned EINVAL
because the tests found the btree root to be of size 120,
while the fork offset was only 104; IOW, they overlapped.
However, this is just due to an error in the
xfs_swap_extents_check_format() tests, because it is checking
the in-memory btree root size against the on-disk fork offset.
We should be checking the on-disk sizes in both cases.
This patch adds a new macro to calculate this size, and uses
it in the tests.
With this change, the filesystem image provided by Gabriel
allows for proper file degragmentation.
Reported-by: Gabriel VLASIU <gabriel@vlasiu.net>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_bmap_btree.h')
| -rw-r--r-- | fs/xfs/xfs_bmap_btree.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h index 70c43d9f72c1..1b726d626941 100644 --- a/fs/xfs/xfs_bmap_btree.h +++ b/fs/xfs/xfs_bmap_btree.h @@ -196,6 +196,8 @@ typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t; #define XFS_BMDR_SPACE_CALC(nrecs) \ (int)(sizeof(xfs_bmdr_block_t) + \ ((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t)))) +#define XFS_BMAP_BMDR_SPACE(bb) \ + (XFS_BMDR_SPACE_CALC(be16_to_cpu((bb)->bb_numrecs))) /* * Maximum number of bmap btree levels. |