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authorBrian Foster <bfoster@redhat.com>2018-08-01 17:20:31 +0300
committerDarrick J. Wong <darrick.wong@oracle.com>2018-08-03 09:05:13 +0300
commit1214f1cf663b0939fbb8f1bccdc74c1d1e452d53 (patch)
tree24a8b208cbfff610e5099eab6cdae0f474aad9df /fs/xfs/xfs_filestream.c
parentce356d64772f920f26cd6c1b02878a737a275638 (diff)
downloadlinux-1214f1cf663b0939fbb8f1bccdc74c1d1e452d53.tar.xz
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/xfs_filestream.c')
-rw-r--r--fs/xfs/xfs_filestream.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c
index 212173c62588..182501373af2 100644
--- a/fs/xfs/xfs_filestream.c
+++ b/fs/xfs/xfs_filestream.c
@@ -20,6 +20,7 @@
#include "xfs_trace.h"
#include "xfs_ag_resv.h"
#include "xfs_trans.h"
+#include "xfs_shared.h"
struct xfs_fstrm_item {
struct xfs_mru_cache_elem mru;
@@ -378,7 +379,7 @@ xfs_filestream_new_ag(
if (xfs_alloc_is_userdata(ap->datatype))
flags |= XFS_PICK_USERDATA;
- if (ap->tp->t_dfops->dop_low)
+ if (ap->tp->t_flags & XFS_TRANS_LOWMODE)
flags |= XFS_PICK_LOWSPACE;
err = xfs_filestream_pick_ag(pip, startag, agp, flags, minlen);