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| author | Dave Chinner <david@fromorbit.com> | 2010-01-20 12:04:53 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2010-01-20 12:04:53 +1100 |
| commit | 587aa0feb74ffe3239b5e26ff5d017ba9f5daec9 (patch) | |
| tree | 3979b8690cf6364afbe51c64a628102c97315064 /fs | |
| parent | f0a0eaa8da08ebc6519cacd731df05bbb4ca47ce (diff) | |
| download | linux-587aa0feb74ffe3239b5e26ff5d017ba9f5daec9.tar.gz linux-587aa0feb74ffe3239b5e26ff5d017ba9f5daec9.tar.bz2 linux-587aa0feb74ffe3239b5e26ff5d017ba9f5daec9.zip | |
xfs: rearrange xfs_mod_sb() to avoid array subscript warning
gcc warns of an array subscript out of bounds in xfs_mod_sb().
The code is written in such a way that if the array subscript is
out of bounds, then it will assert fail. Rearrange the code to
avoid the bounds check warning.
Signed-off-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/xfs_mount.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 0df5045abd3b..d95bd1809f3c 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -1631,15 +1631,14 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields) xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, fields); /* find modified range */ + f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); + ASSERT((1LL << f) & XFS_SB_MOD_BITS); + last = xfs_sb_info[f + 1].offset - 1; f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); ASSERT((1LL << f) & XFS_SB_MOD_BITS); first = xfs_sb_info[f].offset; - f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); - ASSERT((1LL << f) & XFS_SB_MOD_BITS); - last = xfs_sb_info[f + 1].offset - 1; - xfs_trans_log_buf(tp, bp, first, last); } |