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| author | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-02-15 10:24:31 +0100 |
| commit | 0a9d59a2461477bd9ed143c01af9df3f8f00fa81 (patch) | |
| tree | df997d1cfb0786427a0df1fbd6f0640fa4248cf4 /fs/xfs/xfs_iomap.c | |
| parent | a23ce6da9677d245aa0aadc99f4197030350ab54 (diff) | |
| parent | 795abaf1e4e188c4171e3cd3dbb11a9fcacaf505 (diff) | |
| download | linux-0a9d59a2461477bd9ed143c01af9df3f8f00fa81.tar.gz | |
Merge branch 'master' into for-next
Diffstat (limited to 'fs/xfs/xfs_iomap.c')
| -rw-r--r-- | fs/xfs/xfs_iomap.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 55582bd66659..8a0f044750c3 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -337,7 +337,12 @@ xfs_iomap_prealloc_size( int shift = 0; int64_t freesp; - alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size); + /* + * rounddown_pow_of_two() returns an undefined result + * if we pass in alloc_blocks = 0. Hence the "+ 1" to + * ensure we always pass in a non-zero value. + */ + alloc_blocks = XFS_B_TO_FSB(mp, ip->i_size) + 1; alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN, rounddown_pow_of_two(alloc_blocks)); |