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Commit 365c5313 authored by Josef Bacik's avatar Josef Bacik Committed by Chris Mason
Browse files

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: default avatarChris Mason <clm@fb.com>
parent cb723e49

fs/btrfs/extent-tree.c

+8 −6
Original line number Diff line number Diff line
@@ -4329,8 +4329,13 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root, 
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)