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Diffstat (limited to 'drivers/md/md-llbitmap.c')
| -rw-r--r-- | drivers/md/md-llbitmap.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/md/md-llbitmap.c b/drivers/md/md-llbitmap.c index 50eeddf7f539..dc9b72494a81 100644 --- a/drivers/md/md-llbitmap.c +++ b/drivers/md/md-llbitmap.c @@ -1432,16 +1432,19 @@ static void llbitmap_end_behind_write(struct mddev *mddev) wake_up(&llbitmap->behind_wait); } -static void llbitmap_wait_behind_writes(struct mddev *mddev) +static bool llbitmap_wait_behind_writes(struct mddev *mddev, bool nowait) { struct llbitmap *llbitmap = mddev->bitmap; - if (!llbitmap) - return; + if (llbitmap && atomic_read(&llbitmap->behind_writes) > 0) { + if (nowait) + return false; - wait_event(llbitmap->behind_wait, - atomic_read(&llbitmap->behind_writes) == 0); + wait_event(llbitmap->behind_wait, + atomic_read(&llbitmap->behind_writes) == 0); + } + return true; } static ssize_t bits_show(struct mddev *mddev, char *page) |