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xfs: create agfl block free helper function

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Refactor the AGFL block free code into a new helper such that it can
be invoked from deferred context. No functional changes.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Brian Foster 2018-05-07 17:38:46 -07:00 committed by Darrick J. Wong
parent 72c5c5f6d0
commit 4223f659dd
2 changed files with 29 additions and 10 deletions
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37
fs/xfs/libxfs/xfs_alloc.c
View file

@ -2060,6 +2060,30 @@ xfs_alloc_space_available(
return true;
}
int
xfs_free_agfl_block(
struct xfs_trans *tp,
xfs_agnumber_t agno,
xfs_agblock_t agbno,
struct xfs_buf *agbp,
struct xfs_owner_info *oinfo)
{
int error;
struct xfs_buf *bp;
error = xfs_free_ag_extent(tp, agbp, agno, agbno, 1, oinfo,
XFS_AG_RESV_AGFL);
if (error)
return error;
bp = xfs_btree_get_bufs(tp->t_mountp, tp, agno, agbno, 0);
if (!bp)
return -EFSCORRUPTED;
xfs_trans_binval(tp, bp);
return 0;
}
/*
* Check the agfl fields of the agf for inconsistency or corruption. The purpose
* is to detect an agfl header padding mismatch between current and early v5
@ -2247,21 +2271,14 @@ xfs_alloc_fix_freelist(
else
xfs_rmap_ag_owner(&targs.oinfo, XFS_RMAP_OWN_AG);
while (!(flags & XFS_ALLOC_FLAG_NOSHRINK) && pag->pagf_flcount > need) {
struct xfs_buf *bp;
error = xfs_alloc_get_freelist(tp, agbp, &bno, 0);
if (error)
goto out_agbp_relse;
error = xfs_free_ag_extent(tp, agbp, args->agno, bno, 1,
&targs.oinfo, XFS_AG_RESV_AGFL);
error = xfs_free_agfl_block(tp, args->agno, bno, agbp,
&targs.oinfo);
if (error)
goto out_agbp_relse;
bp = xfs_btree_get_bufs(mp, tp, args->agno, bno, 0);
if (!bp) {
error = -EFSCORRUPTED;
goto out_agbp_relse;
}
xfs_trans_binval(tp, bp);
}
targs.tp = tp;

2
fs/xfs/libxfs/xfs_alloc.h
View file

@ -223,6 +223,8 @@ int xfs_read_agf(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_agnumber_t agno, int flags, struct xfs_buf **bpp);
int xfs_alloc_read_agfl(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_agnumber_t agno, struct xfs_buf **bpp);
int xfs_free_agfl_block(struct xfs_trans *, xfs_agnumber_t, xfs_agblock_t,
struct xfs_buf *, struct xfs_owner_info *);
int xfs_alloc_fix_freelist(struct xfs_alloc_arg *args, int flags);
int xfs_free_extent_fix_freelist(struct xfs_trans *tp, xfs_agnumber_t agno,
struct xfs_buf **agbp);