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btrfs: scrub: use bool for flush_all_writes 

flush_all_writes is an atomic but does not use the semantics at all,
it's just on/off indicator, we can use bool.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-03-31 17:12:51 +02:00
parent d7d8249665
commit 2073c4c2e5
1 changed files with 8 additions and 10 deletions
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18
fs/btrfs/scrub.c
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@ -182,8 +182,8 @@ struct scrub_ctx {
struct scrub_bio *wr_curr_bio;
struct mutex wr_lock;
int pages_per_wr_bio; /* <= SCRUB_PAGES_PER_WR_BIO */
atomic_t flush_all_writes;
struct btrfs_device *wr_tgtdev;
bool flush_all_writes;
/*
* statistics
@ -717,7 +717,7 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace)
WARN_ON(!fs_info->dev_replace.tgtdev);
sctx->pages_per_wr_bio = SCRUB_PAGES_PER_WR_BIO;
sctx->wr_tgtdev = fs_info->dev_replace.tgtdev;
atomic_set(&sctx->flush_all_writes, 0);
sctx->flush_all_writes = false;
}
return sctx;
@ -2402,8 +2402,7 @@ static void scrub_missing_raid56_worker(struct btrfs_work *work)
scrub_block_put(sblock);
if (sctx->is_dev_replace &&
atomic_read(&sctx->flush_all_writes)) {
if (sctx->is_dev_replace && sctx->flush_all_writes) {
mutex_lock(&sctx->wr_lock);
scrub_wr_submit(sctx);
mutex_unlock(&sctx->wr_lock);
@ -2607,8 +2606,7 @@ static void scrub_bio_end_io_worker(struct btrfs_work *work)
sctx->first_free = sbio->index;
spin_unlock(&sctx->list_lock);
if (sctx->is_dev_replace &&
atomic_read(&sctx->flush_all_writes)) {
if (sctx->is_dev_replace && sctx->flush_all_writes) {
mutex_lock(&sctx->wr_lock);
scrub_wr_submit(sctx);
mutex_unlock(&sctx->wr_lock);
@ -3440,14 +3438,14 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
*/
if (atomic_read(&fs_info->scrub_pause_req)) {
/* push queued extents */
atomic_set(&sctx->flush_all_writes, 1);
sctx->flush_all_writes = true;
scrub_submit(sctx);
mutex_lock(&sctx->wr_lock);
scrub_wr_submit(sctx);
mutex_unlock(&sctx->wr_lock);
wait_event(sctx->list_wait,
atomic_read(&sctx->bios_in_flight) == 0);
atomic_set(&sctx->flush_all_writes, 0);
sctx->flush_all_writes = false;
scrub_blocked_if_needed(fs_info);
}
@ -3892,7 +3890,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
* write requests are really completed when bios_in_flight
* changes to 0.
*/
atomic_set(&sctx->flush_all_writes, 1);
sctx->flush_all_writes = true;
scrub_submit(sctx);
mutex_lock(&sctx->wr_lock);
scrub_wr_submit(sctx);
@ -3910,7 +3908,7 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx,
*/
wait_event(sctx->list_wait,
atomic_read(&sctx->workers_pending) == 0);
atomic_set(&sctx->flush_all_writes, 0);
sctx->flush_all_writes = false;
scrub_pause_off(fs_info);