diff options
| author | Dave Chinner <dchinner@redhat.com> | 2014-10-02 03:05:32 +0400 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2014-10-02 03:05:32 +0400 |
| commit | ba3726742c1712c43c5a18245476f3fe9fe74773 (patch) | |
| tree | 6d0d0b63f3785fff34b194a9bf4da785e9abeba6 /fs/xfs/xfs_fsops.c | |
| parent | 595bff75dce51e0d6d94877b4b6d11b4747a63fd (diff) | |
| download | linux-ba3726742c1712c43c5a18245476f3fe9fe74773.tar.xz | |
xfs: check xfs_buf_read_uncached returns correctly
xfs_buf_read_uncached() has two failure modes. If can either return
NULL or bp->b_error != 0 depending on the type of failure, and not
all callers check for both. Fix it so that xfs_buf_read_uncached()
always returns the error status, and the buffer is returned as a
function parameter. The buffer will only be returned on success.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_fsops.c')
| -rw-r--r-- | fs/xfs/xfs_fsops.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index f91de1ef05e1..c05ac8b70fa9 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -172,16 +172,11 @@ xfs_growfs_data_private( if ((error = xfs_sb_validate_fsb_count(&mp->m_sb, nb))) return error; dpct = pct - mp->m_sb.sb_imax_pct; - bp = xfs_buf_read_uncached(mp->m_ddev_targp, + error = xfs_buf_read_uncached(mp->m_ddev_targp, XFS_FSB_TO_BB(mp, nb) - XFS_FSS_TO_BB(mp, 1), - XFS_FSS_TO_BB(mp, 1), 0, NULL); - if (!bp) - return -EIO; - if (bp->b_error) { - error = bp->b_error; - xfs_buf_relse(bp); + XFS_FSS_TO_BB(mp, 1), 0, &bp, NULL); + if (error) return error; - } xfs_buf_relse(bp); new = nb; /* use new as a temporary here */ |