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| author | Stefan Behrens <sbehrens@giantdisaster.de> | 2012-05-25 18:06:09 +0400 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2012-05-30 18:23:40 +0400 |
| commit | c11d2c236cc260b36ef644700fbe99bcc7e7da33 (patch) | |
| tree | e240721e0b6e5784177ac39bc299db4063b93c72 /fs/btrfs/volumes.h | |
| parent | 442a4f6308e694e0fa6025708bd5e4e424bbf51c (diff) | |
| download | linux-c11d2c236cc260b36ef644700fbe99bcc7e7da33.tar.xz | |
Btrfs: add ioctl to get and reset the device stats
An ioctl interface is added to get the device statistic counters.
A second ioctl is added to atomically get and reset these counters.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Diffstat (limited to 'fs/btrfs/volumes.h')
| -rw-r--r-- | fs/btrfs/volumes.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 193b2835e6ae..6798f8674b13 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -290,6 +290,9 @@ struct btrfs_device *btrfs_find_device_for_logical(struct btrfs_root *root, u64 logical, int mirror_num); void btrfs_dev_stat_print_on_error(struct btrfs_device *device); void btrfs_dev_stat_inc_and_print(struct btrfs_device *dev, int index); +int btrfs_get_dev_stats(struct btrfs_root *root, + struct btrfs_ioctl_get_dev_stats *stats, + int reset_after_read); static inline void btrfs_dev_stat_inc(struct btrfs_device *dev, int index) |