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| author | David Sterba <dsterba@suse.cz> | 2013-08-01 18:14:52 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2013-09-01 08:04:51 -0400 |
| commit | 8b87dc17fbc7443bf4c6c096279c35e89fb51326 (patch) | |
| tree | aa53657898d003b48135fe4b959c97b48e591339 /fs/btrfs/disk-io.c | |
| parent | 9ec726775188906192f78ab9187640afd81ab996 (diff) | |
| download | linux-8b87dc17fbc7443bf4c6c096279c35e89fb51326.tar.gz linux-8b87dc17fbc7443bf4c6c096279c35e89fb51326.tar.bz2 linux-8b87dc17fbc7443bf4c6c096279c35e89fb51326.zip | |
btrfs: add mount option to set commit interval
I'ts hardcoded to 30 seconds which is fine for most users. Higher values
defer data being synced to permanent storage with obvious consequences
when the system crashes. The upper bound is not forced, but a warning is
printed if it's more than 300 seconds (5 minutes).
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 2a378abb03fb..572e21eb644c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1742,7 +1742,7 @@ static int transaction_kthread(void *arg) do { cannot_commit = false; - delay = HZ * 30; + delay = HZ * root->fs_info->commit_interval; mutex_lock(&root->fs_info->transaction_kthread_mutex); spin_lock(&root->fs_info->trans_lock); @@ -1754,7 +1754,8 @@ static int transaction_kthread(void *arg) now = get_seconds(); if (cur->state < TRANS_STATE_BLOCKED && - (now < cur->start_time || now - cur->start_time < 30)) { + (now < cur->start_time || + now - cur->start_time < root->fs_info->commit_interval)) { spin_unlock(&root->fs_info->trans_lock); delay = HZ * 5; goto sleep; @@ -2194,6 +2195,7 @@ int open_ctree(struct super_block *sb, fs_info->defrag_inodes = RB_ROOT; fs_info->free_chunk_space = 0; fs_info->tree_mod_log = RB_ROOT; + fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL; /* readahead state */ INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_WAIT); |