aboutsummaryrefslogtreecommitdiff
path: root/fs
diff options
context:
space:
mode:
authorChris Mason <chris.mason@oracle.com>2011-10-20 15:45:37 -0400
committerChris Mason <chris.mason@oracle.com>2011-11-06 03:03:47 -0500
commitcd354ad613a393424f85333ceed6b15e07fb94ae (patch)
tree98261d8cc0a0f3808fd34037629a92d31a670b19 /fs
parentdff51cd1c60856c28f5d22a571294c2b70b6b322 (diff)
downloadlinux-stericsson-cd354ad613a393424f85333ceed6b15e07fb94ae.tar.gz
Btrfs: don't wait as long for more batches during SSD log commit
When we're doing log commits, we try to wait for more writers to come in and make the commit bigger. This helps improve performance on rotating disks, but on SSDs it adds latencies. Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/tree-log.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 786639fca067..310ab22cfe58 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2013,10 +2013,10 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
/* wait for previous tree log sync to complete */
if (atomic_read(&root->log_commit[(index1 + 1) % 2]))
wait_log_commit(trans, root, root->log_transid - 1);
-
while (1) {
unsigned long batch = root->log_batch;
- if (root->log_multiple_pids) {
+ /* when we're on an ssd, just kick the log commit out */
+ if (!btrfs_test_opt(root, SSD) && root->log_multiple_pids) {
mutex_unlock(&root->log_mutex);
schedule_timeout_uninterruptible(1);
mutex_lock(&root->log_mutex);