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xfs: add pre-write metadata buffer verifier callbacks

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These verifiers are essentially the same code as the read verifiers,
but do not require ioend processing. Hence factor the read verifier
functions and add a new write verifier wrapper that is used as the
callback.

This is done as one large patch for all verifiers rather than one
patch per verifier as the change is largely mechanical. This
includes hooking up the write verifier via the read verifier
function.

Hooking up the write verifier for buffers obtained via
xfs_trans_get_buf() will be done in a separate patch as that touches
code in many different places rather than just the verifier
functions.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Dave Chinner
2012-11-14 17:52:32 +11:00
committed by Ben Myers
parent cfb0285222
commit 612cfbfe17
20 changed files with 273 additions and 56 deletions
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35
fs/xfs/xfs_alloc.c
View File

@ -430,8 +430,8 @@ xfs_alloc_fixup_trees(
return 0;
}
void
xfs_agfl_read_verify(
static void
xfs_agfl_verify(
struct xfs_buf *bp)
{
#ifdef WHEN_CRCS_COME_ALONG
@ -463,6 +463,21 @@ xfs_agfl_read_verify(
xfs_buf_ioerror(bp, EFSCORRUPTED);
}
#endif
}
static void
xfs_agfl_write_verify(
struct xfs_buf *bp)
{
xfs_agfl_verify(bp);
}
void
xfs_agfl_read_verify(
struct xfs_buf *bp)
{
xfs_agfl_verify(bp);
bp->b_pre_io = xfs_agfl_write_verify;
bp->b_iodone = NULL;
xfs_buf_ioend(bp, 0);
}
@ -2129,7 +2144,7 @@ xfs_alloc_put_freelist(
}
static void
xfs_agf_read_verify(
xfs_agf_verify(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
@ -2164,7 +2179,21 @@ xfs_agf_read_verify(
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp, agf);
xfs_buf_ioerror(bp, EFSCORRUPTED);
}
}
static void
xfs_agf_write_verify(
struct xfs_buf *bp)
{
xfs_agf_verify(bp);
}
void
xfs_agf_read_verify(
struct xfs_buf *bp)
{
xfs_agf_verify(bp);
bp->b_pre_io = xfs_agf_write_verify;
bp->b_iodone = NULL;
xfs_buf_ioend(bp, 0);
}