Commit 9ce2f423 authored by Josef Bacik's avatar Josef Bacik Committed by David Sterba
Browse files

btrfs: refactor priority_reclaim_metadata_space 



With the eviction flushing stuff we'll want to allow for different
states, but still work basically the same way that
priority_reclaim_metadata_space works currently.  Refactor this to take
the flushing states and size as an argument so we can use the same logic
for limit flushing and eviction flushing.

Signed-off-by: default avatarJosef Bacik <josef@toxicpanda.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 03235279

fs/btrfs/space-info.c

+9 −6
Original line number Diff line number Diff line
@@ -850,7 +850,9 @@ static const enum btrfs_flush_state priority_flush_states[] = { 


static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info,

				struct btrfs_space_info *space_info,

					    struct reserve_ticket *ticket)

				struct reserve_ticket *ticket,

				const enum btrfs_flush_state *states,

				int states_nr)

{

	u64 to_reclaim;

	int flush_state;
@@ -866,8 +868,7 @@ static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info, 


	flush_state = 0;

	do {

		flush_space(fs_info, space_info, to_reclaim,

			    priority_flush_states[flush_state]);

		flush_space(fs_info, space_info, to_reclaim, states[flush_state]);

		flush_state++;

		spin_lock(&space_info->lock);

		if (ticket->bytes == 0) {
@@ -875,7 +876,7 @@ static void priority_reclaim_metadata_space(struct btrfs_fs_info *fs_info, 
			return;

		}

		spin_unlock(&space_info->lock);

	} while (flush_state < ARRAY_SIZE(priority_flush_states));

	} while (flush_state < states_nr);

}



static void wait_reserve_ticket(struct btrfs_fs_info *fs_info,
@@ -924,7 +925,9 @@ static int handle_reserve_ticket(struct btrfs_fs_info *fs_info, 
	if (flush == BTRFS_RESERVE_FLUSH_ALL)

		wait_reserve_ticket(fs_info, space_info, ticket);

	else

		priority_reclaim_metadata_space(fs_info, space_info, ticket);

		priority_reclaim_metadata_space(fs_info, space_info, ticket,

						priority_flush_states,

						ARRAY_SIZE(priority_flush_states));



	spin_lock(&space_info->lock);

	ret = ticket->error;

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