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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: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2019-08-01 18:19:36 -04:00 committed by David Sterba
parent 03235279b4
commit 9ce2f423b9
1 changed files with 9 additions and 6 deletions
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15
fs/btrfs/space-info.c
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@ -849,8 +849,10 @@ 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 btrfs_space_info *space_info,
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;