From: Josef Bacik Date: Mon, 23 Apr 2012 19:09:39 +0000 (-0400) Subject: Btrfs: do not do filemap_write_and_wait_range in fsync X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0885ef5b5601e9b007c383e77c172769b1f214fd;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git Btrfs: do not do filemap_write_and_wait_range in fsync We already do the btrfs_wait_ordered_range which will do this for us, so just remove this call so we don't call it twice. Thanks, Signed-off-by: Josef Bacik --- diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 8aa8d7fe74d7..cfc0ab915d03 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1497,14 +1497,15 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) trace_btrfs_sync_file(file, datasync); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); - if (ret) - return ret; mutex_lock(&inode->i_mutex); - /* we wait first, since the writeback may change the inode */ + /* + * we wait first, since the writeback may change the inode, also wait + * ordered range does a filemape_write_and_wait_range which is why we + * don't do it above like other file systems. + */ root->log_batch++; - btrfs_wait_ordered_range(inode, 0, (u64)-1); + btrfs_wait_ordered_range(inode, start, end); root->log_batch++; /*