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| author |   Josef Bacik <jbacik@fb.com> | 2015-02-18 13:58:15 -0800 |
|---|---|---|
| committer |   Chris Mason <clm@fb.com> | 2015-04-10 14:06:54 -0700 |
| commit | 365c5313776730acf433d54226f0216a1d075e9a (patch) | |
| tree | 3b9767744b06cd31f6af3ca122465039d60b47f1 /fs/btrfs/extent-tree.c | |
| parent | Btrfs: reserve space for block groups (diff) | |
| download | linux-dev-365c5313776730acf433d54226f0216a1d075e9a.tar.xz linux-dev-365c5313776730acf433d54226f0216a1d075e9a.zip | |
Btrfs: don't commit the transaction in the async space flushing
We're triggering a huge number of commits from
btrfs_async_reclaim_metadata_space. These aren't really requried,
because everyone calling the async reclaim code is going to end up
triggering a commit on their own.
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index ae8db3ba467c..3d4b3d680fea 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4329,8 +4329,13 @@ out: static inline int need_do_async_reclaim(struct btrfs_space_info *space_info, struct btrfs_fs_info *fs_info, u64 used) { - return (used >= div_factor_fine(space_info->total_bytes, 98) && - !btrfs_fs_closing(fs_info) && + u64 thresh = div_factor_fine(space_info->total_bytes, 98); + + /* If we're just plain full then async reclaim just slows us down. */ + if (space_info->bytes_used >= thresh) + return 0; + + return (used >= thresh && !btrfs_fs_closing(fs_info) && !test_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state)); } @@ -4385,10 +4390,7 @@ static void btrfs_async_reclaim_metadata_space(struct work_struct *work) if (!btrfs_need_do_async_reclaim(space_info, fs_info, flush_state)) return; - } while (flush_state <= COMMIT_TRANS); - - if (btrfs_need_do_async_reclaim(space_info, fs_info, flush_state)) - queue_work(system_unbound_wq, work); + } while (flush_state < COMMIT_TRANS); } void btrfs_init_async_reclaim_work(struct work_struct *work) |