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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-04-14 08:51:33 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-04-14 08:51:33 -0700 |
| commit | 85a3685852d9ac7d92be9d824533c915a4597fa4 (patch) | |
| tree | b7c542e2061cf96c9f7ad500fa12567f9ff0b39f /fs/btrfs/dev-replace.c | |
| parent | Input: alps - non interleaved V2 dualpoint has separate stick button bits (diff) | |
| parent | Input: atkbd - document "no new force-release quirks" policy (diff) | |
| download | linux-dev-85a3685852d9ac7d92be9d824533c915a4597fa4.tar.xz linux-dev-85a3685852d9ac7d92be9d824533c915a4597fa4.zip | |
Merge branch 'next' into for-linus
Prepare first round of input updates for 4.1 merge window.
Diffstat (limited to 'fs/btrfs/dev-replace.c')
| -rw-r--r-- | fs/btrfs/dev-replace.c | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/fs/btrfs/dev-replace.c b/fs/btrfs/dev-replace.c index ca6a3a3b6b6c..5ec03d999c37 100644 --- a/fs/btrfs/dev-replace.c +++ b/fs/btrfs/dev-replace.c @@ -440,18 +440,9 @@ leave: */ static void btrfs_rm_dev_replace_blocked(struct btrfs_fs_info *fs_info) { - s64 writers; - DEFINE_WAIT(wait); - set_bit(BTRFS_FS_STATE_DEV_REPLACING, &fs_info->fs_state); - do { - prepare_to_wait(&fs_info->replace_wait, &wait, - TASK_UNINTERRUPTIBLE); - writers = percpu_counter_sum(&fs_info->bio_counter); - if (writers) - schedule(); - finish_wait(&fs_info->replace_wait, &wait); - } while (writers); + wait_event(fs_info->replace_wait, !percpu_counter_sum( + &fs_info->bio_counter)); } /* @@ -932,15 +923,15 @@ void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount) void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info) { - DEFINE_WAIT(wait); -again: - percpu_counter_inc(&fs_info->bio_counter); - if (test_bit(BTRFS_FS_STATE_DEV_REPLACING, &fs_info->fs_state)) { + while (1) { + percpu_counter_inc(&fs_info->bio_counter); + if (likely(!test_bit(BTRFS_FS_STATE_DEV_REPLACING, + &fs_info->fs_state))) + break; + btrfs_bio_counter_dec(fs_info); wait_event(fs_info->replace_wait, !test_bit(BTRFS_FS_STATE_DEV_REPLACING, &fs_info->fs_state)); - goto again; } - } |