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| author | David S. Miller <davem@davemloft.net> | 2015-02-18 02:48:51 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-02-18 02:48:51 (GMT) |
| commit | fece13ca005a5f559147e9424321f4b5e01272b4 (patch) | |
| tree | 54e762e70afb664d14152e6bcf89a48be3fb9c13 /drivers/md/bitmap.c | |
| parent | 855e7e7174bade3f2b63077a81eea5aab525dbf6 (diff) | |
| parent | f5af19d10d151c5a2afae3306578f485c244db25 (diff) | |
| download | linux-fece13ca005a5f559147e9424321f4b5e01272b4.tar.xz | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/md/bitmap.c')
| -rw-r--r-- | drivers/md/bitmap.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 1695ee5..3a57679 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1619,7 +1619,9 @@ void bitmap_destroy(struct mddev *mddev) return; mutex_lock(&mddev->bitmap_info.mutex); + spin_lock(&mddev->lock); mddev->bitmap = NULL; /* disconnect from the md device */ + spin_unlock(&mddev->lock); mutex_unlock(&mddev->bitmap_info.mutex); if (mddev->thread) mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT; @@ -2209,11 +2211,13 @@ __ATTR(metadata, S_IRUGO|S_IWUSR, metadata_show, metadata_store); static ssize_t can_clear_show(struct mddev *mddev, char *page) { int len; + spin_lock(&mddev->lock); if (mddev->bitmap) len = sprintf(page, "%s\n", (mddev->bitmap->need_sync ? "false" : "true")); else len = sprintf(page, "\n"); + spin_unlock(&mddev->lock); return len; } @@ -2238,10 +2242,15 @@ __ATTR(can_clear, S_IRUGO|S_IWUSR, can_clear_show, can_clear_store); static ssize_t behind_writes_used_show(struct mddev *mddev, char *page) { + ssize_t ret; + spin_lock(&mddev->lock); if (mddev->bitmap == NULL) - return sprintf(page, "0\n"); - return sprintf(page, "%lu\n", - mddev->bitmap->behind_writes_used); + ret = sprintf(page, "0\n"); + else + ret = sprintf(page, "%lu\n", + mddev->bitmap->behind_writes_used); + spin_unlock(&mddev->lock); + return ret; } static ssize_t |