diff options
| author | Dave Chinner <dchinner@redhat.com> | 2012-11-12 12:54:02 +0100 |
|---|---|---|
| committer | Ben Myers <bpm@sgi.com> | 2012-11-16 04:34:05 +0100 |
| commit | eab4e63368b4cfa597dbdac66d1a7a836a693b7d (patch) | |
| tree | 37d6756a3fd9e43ecf65d1b4a3950ecd34ad653f /fs/xfs/xfs_rtalloc.c | |
| parent | xfs: make buffer read verication an IO completion function (diff) | |
| download | linux-eab4e63368b4cfa597dbdac66d1a7a836a693b7d.tar.xz linux-eab4e63368b4cfa597dbdac66d1a7a836a693b7d.zip | |
xfs: uncached buffer reads need to return an error
With verification being done as an IO completion callback, different
errors can be returned from a read. Uncached reads only return a
buffer or NULL on failure, which means the verification error cannot
be returned to the caller.
Split the error handling for these reads into two - a failure to get
a buffer will still return NULL, but a read error will return a
referenced buffer with b_error set rather than NULL. The caller is
responsible for checking the error state of the buffer returned.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Phil White <pwhite@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_rtalloc.c')
| -rw-r--r-- | fs/xfs/xfs_rtalloc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index b271ed939d7b..98dc670d3ee0 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -1876,6 +1876,11 @@ xfs_growfs_rt( XFS_FSB_TO_BB(mp, 1), 0, NULL); if (!bp) return EIO; + if (bp->b_error) { + error = bp->b_error; + xfs_buf_relse(bp); + return error; + } xfs_buf_relse(bp); /* @@ -2221,8 +2226,10 @@ xfs_rtmount_init( bp = xfs_buf_read_uncached(mp->m_rtdev_targp, d - XFS_FSB_TO_BB(mp, 1), XFS_FSB_TO_BB(mp, 1), 0, NULL); - if (!bp) { + if (!bp || bp->b_error) { xfs_warn(mp, "realtime device size check failed"); + if (bp) + xfs_buf_relse(bp); return EIO; } xfs_buf_relse(bp); |