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xfs: make xfs_buf_read_map return an error code

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Convert xfs_buf_read_map() to return numeric error codes like most
everywhere else in xfs.  This involves moving the open-coded logic that
reports metadata IO read / corruption errors and stales the buffer into
xfs_buf_read_map so that the logic is all in one place.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
2020-01-23 17:01:16 -08:00
parent 3848b5f670
commit 4ed8e27b4f
7 changed files with 72 additions and 83 deletions
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11
fs/xfs/libxfs/xfs_alloc.c
View File

@@ -2956,14 +2956,17 @@ xfs_read_agf(
trace_xfs_read_agf(mp, agno);
ASSERT(agno != NULLAGNUMBER);
error = xfs_trans_read_buf(
mp, tp, mp->m_ddev_targp,
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp,
XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), flags, bpp, &xfs_agf_buf_ops);
/*
* Callers of xfs_read_agf() currently interpret a NULL bpp as EAGAIN
* and need to be converted to check for EAGAIN specifically.
*/
if (error == -EAGAIN)
return 0;
if (error)
return error;
if (!*bpp)
return 0;
ASSERT(!(*bpp)->b_error);
xfs_buf_set_ref(*bpp, XFS_AGF_REF);

10
fs/xfs/libxfs/xfs_attr_remote.c
View File

@@ -422,16 +422,6 @@ xfs_attr_rmtval_get(
&xfs_attr3_rmt_buf_ops);
if (!bp)
return -ENOMEM;
error = bp->b_error;
if (error) {
xfs_buf_ioerror_alert(bp, __func__);
xfs_buf_relse(bp);
/* bad CRC means corrupted metadata */
if (error == -EFSBADCRC)
error = -EFSCORRUPTED;
return error;
}
error = xfs_attr_rmtval_copyout(mp, bp, args->dp->i_ino,
&offset, &valuelen,