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| author | Stefan Behrens <sbehrens@giantdisaster.de> | 2012-05-25 16:06:10 +0200 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2012-05-30 16:23:41 +0200 |
| commit | 733f4fbbc1083aa343da739f46ee839705d6cfe3 (patch) | |
| tree | 0c6dab9e8610eb9b4ccd9a6453caa1588583b1b8 /fs/btrfs/transaction.c | |
| parent | Btrfs: add ioctl to get and reset the device stats (diff) | |
| download | linux-733f4fbbc1083aa343da739f46ee839705d6cfe3.tar.xz linux-733f4fbbc1083aa343da739f46ee839705d6cfe3.zip | |
Btrfs: read device stats on mount, write modified ones during commit
The device statistics are written into the device tree with each
transaction commit. Only modified statistics are written.
When a filesystem is mounted, the device statistics for each involved
device are read from the device tree and used to initialize the
counters.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Diffstat (limited to 'fs/btrfs/transaction.c')
| -rw-r--r-- | fs/btrfs/transaction.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 36422254ef67..82b03afcbd92 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -28,6 +28,7 @@ #include "locking.h" #include "tree-log.h" #include "inode-map.h" +#include "volumes.h" #define BTRFS_ROOT_TRANS_TAG 0 @@ -758,6 +759,9 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans, if (ret) return ret; + ret = btrfs_run_dev_stats(trans, root->fs_info); + BUG_ON(ret); + while (!list_empty(&fs_info->dirty_cowonly_roots)) { next = fs_info->dirty_cowonly_roots.next; list_del_init(next); |