Btrfs_throttle will make us wait if there is a currently committing transaction until we can open new transactions, which is ridiculous since we don''t actually start any transactions within the file write path anyway, so all this does is introduce big latencies if we have a sync/fsync heavy workload going on while somebody else is trying to do work. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com> --- fs/btrfs/file.c | 1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 97fbe93..57c4b24 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1273,7 +1273,6 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file, dirty_pages); if (dirty_pages < (root->leafsize >> PAGE_CACHE_SHIFT) + 1) btrfs_btree_balance_dirty(root, 1); - btrfs_throttle(root); pos += copied; num_written += copied; -- 1.7.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html