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authorStefan Behrens <sbehrens@giantdisaster.de>2012-05-25 18:06:10 +0400
committerJosef Bacik <josef@redhat.com>2012-05-30 18:23:41 +0400
commit733f4fbbc1083aa343da739f46ee839705d6cfe3 (patch)
tree0c6dab9e8610eb9b4ccd9a6453caa1588583b1b8 /fs/btrfs/print-tree.c
parentc11d2c236cc260b36ef644700fbe99bcc7e7da33 (diff)
downloadlinux-733f4fbbc1083aa343da739f46ee839705d6cfe3.tar.xz
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.c3
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;
};
}
}