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linux/fs/xfs/libxfs
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Brian Foster b277c37f43 xfs: bypass final dfops roll in trans commit path 
Once xfs_defer_finish() has completed all deferred operations, it
checks the dirty state of the transaction and rolls it once more to
return a clean transaction for the caller. This primarily to cover
the case where repeated xfs_defer_finish() calls are made in a loop
and we need to make sure that the caller starts the next iteration
with a clean transaction. Otherwise we risk transaction reservation
overrun.

This final transaction roll is not required in the transaction
commit path, however, because the transaction is immediately
committed and freed after dfops completion. Refactor the final roll
into a separate helper such that we can avoid it in the transaction
commit path.  Lift the dfops reset as well so dfops remains valid
until after the last call to xfs_defer_trans_roll(). The reset is
also unnecessary in the transaction commit path because the
transaction is about to complete.

This eliminates unnecessary regrants of transactions where the
associated transaction roll can be replaced by a transaction commit.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Bill O'Donnell <billodo@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>
 		2018-07-26 10:15:16 -07:00
..
xfs_ag.c xfs: factor the ag length extension code into libxfs 2018-05-15 18:12:51 -07:00
xfs_ag.h xfs: factor the ag length extension code into libxfs 2018-05-15 18:12:51 -07:00
xfs_ag_resv.c xfs: fix fdblocks accounting w/ RMAPBT per-AG reservation 2018-06-24 12:00:12 -07:00
xfs_ag_resv.h libxfs: Fix a couple of sparse complaintis 2018-07-17 14:25:58 -07:00
xfs_alloc.c xfs: Initialize variables in xfs_alloc_get_rec before using them 2018-07-11 22:26:36 -07:00
xfs_alloc.h xfs: remove xfs_alloc_arg firstblock field 2018-07-11 22:26:30 -07:00
xfs_alloc_btree.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_alloc_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr.c xfs: drop unnecessary xfs_defer_finish() dfops parameter 2018-07-26 10:15:16 -07:00
xfs_attr_leaf.c xfs: check leaf attribute block freemap in verifier 2018-07-23 09:08:00 -07:00
xfs_attr_leaf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr_remote.c xfs: drop unnecessary xfs_defer_finish() dfops parameter 2018-07-26 10:15:16 -07:00
xfs_attr_remote.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr_sf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bit.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bit.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bmap.c xfs: remove all boilerplate defer init/finish code 2018-07-26 10:15:15 -07:00
xfs_bmap.h xfs: remove xfs_bmalloca firstblock field 2018-07-11 22:26:28 -07:00
xfs_bmap_btree.c xfs: trivial xfs_btree_del_cursor cleanups 2018-07-23 09:08:00 -07:00
xfs_bmap_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_btree.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_btree.h xfs: remove xfs_btree_cur private firstblock field 2018-07-11 22:26:29 -07:00
xfs_cksum.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_da_btree.c xfs: remove xfs_bunmapi() firstblock param 2018-07-11 22:26:25 -07:00
xfs_da_btree.h xfs: use ->t_firstblock in xattr ops 2018-07-11 22:26:22 -07:00
xfs_da_format.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_da_format.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_defer.c xfs: bypass final dfops roll in trans commit path 2018-07-26 10:15:16 -07:00
xfs_defer.h xfs: bypass final dfops roll in trans commit path 2018-07-26 10:15:16 -07:00
xfs_dir2.c xfs: remove xfs_bunmapi() firstblock param 2018-07-11 22:26:25 -07:00
xfs_dir2.h xfs: remove firstblock param from xfs dir ops 2018-07-11 22:26:21 -07:00
xfs_dir2_block.c xfs: clean up MIN/MAX 2018-06-08 10:07:52 -07:00
xfs_dir2_data.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_dir2_leaf.c xfs: clean up MIN/MAX 2018-06-08 10:07:52 -07:00
xfs_dir2_node.c xfs: use swap macro in xfs_dir2_leafn_rebalance 2018-07-17 14:25:57 -07:00
xfs_dir2_priv.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_dir2_sf.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_dquot_buf.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_errortag.h xfs: force summary counter recalc at next mount 2018-07-23 09:08:01 -07:00
xfs_format.h xfs: don't allow insert-range to shift extents past the maximum offset 2018-06-24 11:56:36 -07:00
xfs_fs.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_ialloc.c xfs: trivial xfs_btree_del_cursor cleanups 2018-07-23 09:08:00 -07:00
xfs_ialloc.h xfs: remove dfops parameter from ifree call stack 2018-07-11 22:26:07 -07:00
xfs_ialloc_btree.c xfs: trivial xfs_btree_del_cursor cleanups 2018-07-23 09:08:00 -07:00
xfs_ialloc_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_iext_tree.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode_buf.c xfs: More robust inode extent count validation 2018-06-21 23:25:57 -07:00
xfs_inode_buf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode_fork.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode_fork.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_log_format.h xfs: refactor unmount record write 2018-07-23 09:08:01 -07:00
xfs_log_recover.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_log_rlimit.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_quota_defs.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_refcount.c xfs: remove all boilerplate defer init/finish code 2018-07-26 10:15:15 -07:00
xfs_refcount.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_refcount_btree.c xfs: remove xfs_alloc_arg firstblock field 2018-07-11 22:26:30 -07:00
xfs_refcount_btree.h xfs: remove unused btree cursor bc_private.a.dfops field 2018-07-11 22:26:17 -07:00
xfs_rmap.c xfs: trivial xfs_btree_del_cursor cleanups 2018-07-23 09:08:00 -07:00
xfs_rmap.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_rmap_btree.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_rmap_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_rtbitmap.c xfs: fix off-by-one error in xfs_rtalloc_query_range 2018-06-24 11:56:36 -07:00
xfs_sb.c xfs: detect and fix bad summary counts at mount 2018-07-23 09:08:01 -07:00
xfs_sb.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_shared.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_symlink_remote.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_trans_resv.c xfs: clean up MIN/MAX 2018-06-08 10:07:52 -07:00
xfs_trans_resv.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_trans_space.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_types.c xfs: move various type verifiers to common file 2018-06-08 10:07:51 -07:00
xfs_types.h xfs: move various type verifiers to common file 2018-06-08 10:07:51 -07:00