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| author |  Brian Foster <bfoster@redhat.com>
| 2018-08-01 07:20:31 -0700 |
|---|---|---|
| committer |  Darrick J. Wong <darrick.wong@oracle.com>
| 2018-08-02 23:05:13 -0700 |
| commit | 1214f1cf663b0939fbb8f1bccdc74c1d1e452d53 (patch) | |
| tree | 24a8b208cbfff610e5099eab6cdae0f474aad9df /fs/xfs/libxfs/xfs_bmap_btree.c | |
| parent | xfs: pass transaction to dfops reset/move helpers (diff) | |
| download | linux-1214f1cf663b0939fbb8f1bccdc74c1d1e452d53.tar.gz linux-1214f1cf663b0939fbb8f1bccdc74c1d1e452d53.tar.bz2 linux-1214f1cf663b0939fbb8f1bccdc74c1d1e452d53.zip | |
xfs: replace dop_low with transaction flag
The dop_low field enables the low free space allocation mode when a
previous allocation has detected difficulty allocating blocks. It
has historically been part of the xfs_defer_ops structure, which
means if enabled, it remains enabled across a set of transactions
until the deferred operations have completed and the dfops is reset.
Now that the dfops is embedded in the transaction, we can save a bit
more space by using a transaction flag rather than a standalone
boolean. Drop the ->dop_low field and replace it with a transaction
flag that is set at the same points, carried across rolling
transactions and cleared on completion of deferred operations. This
essentially emulates the behavior of ->dop_low and so should not
change behavior.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_bmap_btree.c')
| -rw-r--r-- | fs/xfs/libxfs/xfs_bmap_btree.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c index 01489714a253..955e29de8cae 100644 --- a/fs/xfs/libxfs/xfs_bmap_btree.c +++ b/fs/xfs/libxfs/xfs_bmap_btree.c @@ -226,7 +226,7 @@ xfs_bmbt_alloc_block( * block allocation here and corrupt the filesystem. */ args.minleft = args.tp->t_blk_res; - } else if (cur->bc_tp->t_dfops->dop_low) { + } else if (cur->bc_tp->t_flags & XFS_TRANS_LOWMODE) { args.type = XFS_ALLOCTYPE_START_BNO; } else { args.type = XFS_ALLOCTYPE_NEAR_BNO; @@ -253,7 +253,7 @@ xfs_bmbt_alloc_block( error = xfs_alloc_vextent(&args); if (error) goto error0; - cur->bc_tp->t_dfops->dop_low = true; + cur->bc_tp->t_flags |= XFS_TRANS_LOWMODE; } if (WARN_ON_ONCE(args.fsbno == NULLFSBLOCK)) { *stat = 0; |