diff options
| -rw-r--r-- | fs/btrfs/scrub.c | 43 | ||||
| -rw-r--r-- | fs/btrfs/transaction.c | 3 |
2 files changed, 19 insertions, 27 deletions
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 6acb573..adebe12 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -256,6 +256,7 @@ static int copy_nocow_pages_for_inode(u64 inum, u64 offset, u64 root, static int copy_nocow_pages(struct scrub_ctx *sctx, u64 logical, u64 len, int mirror_num, u64 physical_for_dev_replace); static void copy_nocow_pages_worker(struct btrfs_work *work); +static void __scrub_blocked_if_needed(struct btrfs_fs_info *fs_info); static void scrub_blocked_if_needed(struct btrfs_fs_info *fs_info); @@ -270,7 +271,7 @@ static void scrub_pending_bio_dec(struct scrub_ctx *sctx) wake_up(&sctx->list_wait); } -static void scrub_blocked_if_needed(struct btrfs_fs_info *fs_info) +static void __scrub_blocked_if_needed(struct btrfs_fs_info *fs_info) { while (atomic_read(&fs_info->scrub_pause_req)) { mutex_unlock(&fs_info->scrub_lock); @@ -280,6 +281,19 @@ static void scrub_blocked_if_needed(struct btrfs_fs_info *fs_info) } } +static void scrub_blocked_if_needed(struct btrfs_fs_info *fs_info) +{ + atomic_inc(&fs_info->scrubs_paused); + wake_up(&fs_info->scrub_pause_wait); + + mutex_lock(&fs_info->scrub_lock); + __scrub_blocked_if_needed(fs_info); + atomic_dec(&fs_info->scrubs_paused); + mutex_unlock(&fs_info->scrub_lock); + + wake_up(&fs_info->scrub_pause_wait); +} + /* * used for workers that require transaction commits (i.e., for the * NOCOW case) @@ -2295,8 +2309,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, wait_event(sctx->list_wait, atomic_read(&sctx->bios_in_flight) == 0); - atomic_inc(&fs_info->scrubs_paused); - wake_up(&fs_info->scrub_pause_wait); + scrub_blocked_if_needed(fs_info); /* FIXME it might be better to start readahead at commit root */ key_start.objectid = logical; @@ -2320,12 +2333,6 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, if (!IS_ERR(reada2)) btrfs_reada_wait(reada2); - mutex_lock(&fs_info->scrub_lock); - scrub_blocked_if_needed(fs_info); - atomic_dec(&fs_info->scrubs_paused); - mutex_unlock(&fs_info->scrub_lock); - - wake_up(&fs_info->scrub_pause_wait); /* * collect all data csums for the stripe to avoid seeking during @@ -2362,15 +2369,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx, wait_event(sctx->list_wait, atomic_read(&sctx->bios_in_flight) == 0); atomic_set(&sctx->wr_ctx.flush_all_writes, 0); - atomic_inc(&fs_info->scrubs_paused); - wake_up(&fs_info->scrub_pause_wait); - - mutex_lock(&fs_info->scrub_lock); scrub_blocked_if_needed(fs_info); - atomic_dec(&fs_info->scrubs_paused); - mutex_unlock(&fs_info->scrub_lock); - - wake_up(&fs_info->scrub_pause_wait); } key.objectid = logical; @@ -2685,17 +2684,9 @@ int scrub_enumerate_chunks(struct scrub_ctx *sctx, wait_event(sctx->list_wait, atomic_read(&sctx->bios_in_flight) == 0); atomic_set(&sctx->wr_ctx.flush_all_writes, 0); - atomic_inc(&fs_info->scrubs_paused); - wake_up(&fs_info->scrub_pause_wait); wait_event(sctx->list_wait, atomic_read(&sctx->workers_pending) == 0); - - mutex_lock(&fs_info->scrub_lock); scrub_blocked_if_needed(fs_info); - atomic_dec(&fs_info->scrubs_paused); - mutex_unlock(&fs_info->scrub_lock); - - wake_up(&fs_info->scrub_pause_wait); btrfs_put_block_group(cache); if (ret) @@ -2912,7 +2903,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, * checking @scrub_pause_req here, we can avoid * race between committing transaction and scrubbing. */ - scrub_blocked_if_needed(fs_info); + __scrub_blocked_if_needed(fs_info); atomic_inc(&fs_info->scrubs_running); mutex_unlock(&fs_info->scrub_lock); diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 1451637..026f1fe 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1748,6 +1748,8 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, goto cleanup_transaction; btrfs_wait_delalloc_flush(root->fs_info); + + btrfs_scrub_pause(root); /* * Ok now we need to make sure to block out any other joins while we * commit the transaction. We could have started a join before setting @@ -1812,7 +1814,6 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, WARN_ON(cur_trans != trans->transaction); - btrfs_scrub_pause(root); /* btrfs_commit_tree_roots is responsible for getting the * various roots consistent with each other. Every pointer * in the tree of tree roots has to point to the most up to date |
