diff options
Diffstat (limited to 'drivers/md/md-bitmap.c')
| -rw-r--r-- | drivers/md/md-bitmap.c | 74 |
1 files changed, 45 insertions, 29 deletions
diff --git a/drivers/md/md-bitmap.c b/drivers/md/md-bitmap.c index d16a89d673a1..ec4ecd96e6b1 100644 --- a/drivers/md/md-bitmap.c +++ b/drivers/md/md-bitmap.c @@ -1671,24 +1671,13 @@ __acquires(bitmap->lock) } static int bitmap_startwrite(struct mddev *mddev, sector_t offset, - unsigned long sectors, bool behind) + unsigned long sectors) { struct bitmap *bitmap = mddev->bitmap; if (!bitmap) return 0; - if (behind) { - int bw; - atomic_inc(&bitmap->behind_writes); - bw = atomic_read(&bitmap->behind_writes); - if (bw > bitmap->behind_writes_used) - bitmap->behind_writes_used = bw; - - pr_debug("inc write-behind count %d/%lu\n", - bw, bitmap->mddev->bitmap_info.max_write_behind); - } - while (sectors) { sector_t blocks; bitmap_counter_t *bmc; @@ -1737,21 +1726,13 @@ static int bitmap_startwrite(struct mddev *mddev, sector_t offset, } static void bitmap_endwrite(struct mddev *mddev, sector_t offset, - unsigned long sectors, bool success, bool behind) + unsigned long sectors) { struct bitmap *bitmap = mddev->bitmap; if (!bitmap) return; - if (behind) { - if (atomic_dec_and_test(&bitmap->behind_writes)) - wake_up(&bitmap->behind_wait); - pr_debug("dec write-behind count %d/%lu\n", - atomic_read(&bitmap->behind_writes), - bitmap->mddev->bitmap_info.max_write_behind); - } - while (sectors) { sector_t blocks; unsigned long flags; @@ -1764,15 +1745,16 @@ static void bitmap_endwrite(struct mddev *mddev, sector_t offset, return; } - if (success && !bitmap->mddev->degraded && - bitmap->events_cleared < bitmap->mddev->events) { - bitmap->events_cleared = bitmap->mddev->events; - bitmap->need_sync = 1; - sysfs_notify_dirent_safe(bitmap->sysfs_can_clear); - } - - if (!success && !NEEDED(*bmc)) + if (!bitmap->mddev->degraded) { + if (bitmap->events_cleared < bitmap->mddev->events) { + bitmap->events_cleared = bitmap->mddev->events; + bitmap->need_sync = 1; + sysfs_notify_dirent_safe( + bitmap->sysfs_can_clear); + } + } else if (!NEEDED(*bmc)) { *bmc |= NEEDED_MASK; + } if (COUNTER(*bmc) == COUNTER_MAX) wake_up(&bitmap->overflow_wait); @@ -2062,6 +2044,37 @@ static void md_bitmap_free(void *data) kfree(bitmap); } +static void bitmap_start_behind_write(struct mddev *mddev) +{ + struct bitmap *bitmap = mddev->bitmap; + int bw; + + if (!bitmap) + return; + + atomic_inc(&bitmap->behind_writes); + bw = atomic_read(&bitmap->behind_writes); + if (bw > bitmap->behind_writes_used) + bitmap->behind_writes_used = bw; + + pr_debug("inc write-behind count %d/%lu\n", + bw, bitmap->mddev->bitmap_info.max_write_behind); +} + +static void bitmap_end_behind_write(struct mddev *mddev) +{ + struct bitmap *bitmap = mddev->bitmap; + + if (!bitmap) + return; + + if (atomic_dec_and_test(&bitmap->behind_writes)) + wake_up(&bitmap->behind_wait); + pr_debug("dec write-behind count %d/%lu\n", + atomic_read(&bitmap->behind_writes), + bitmap->mddev->bitmap_info.max_write_behind); +} + static void bitmap_wait_behind_writes(struct mddev *mddev) { struct bitmap *bitmap = mddev->bitmap; @@ -2981,6 +2994,9 @@ static struct bitmap_operations bitmap_ops = { .dirty_bits = bitmap_dirty_bits, .unplug = bitmap_unplug, .daemon_work = bitmap_daemon_work, + + .start_behind_write = bitmap_start_behind_write, + .end_behind_write = bitmap_end_behind_write, .wait_behind_writes = bitmap_wait_behind_writes, .startwrite = bitmap_startwrite, |