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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/print-tree.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/print-tree.c')
| -rw-r--r-- | fs/btrfs/print-tree.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c index f38e452486b8..5e23684887eb 100644 --- a/fs/btrfs/print-tree.c +++ b/fs/btrfs/print-tree.c @@ -294,6 +294,9 @@ void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) btrfs_dev_extent_chunk_offset(l, dev_extent), (unsigned long long) btrfs_dev_extent_length(l, dev_extent)); + case BTRFS_DEV_STATS_KEY: + printk(KERN_INFO "\t\tdevice stats\n"); + break; }; } } |