From mboxrd@z Thu Jan 1 00:00:00 1970 From: jim owens Subject: [PATCH V3 05/18] Btrfs: btrfs_discard_extent must use WRITE with btrfs_map_block. Date: Sun, 21 Mar 2010 23:22:38 -0400 Message-ID: <4BA6E27E.3030508@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: linux-btrfs Return-path: List-ID: WRITE is needed on btrfs_map_block() to fetch all raid stripes, READ only returns one device and we want to discard all copies. Signed-off-by: jim owens --- fs/btrfs/extent-tree.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index f01e41a..53ad905 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1602,7 +1602,7 @@ static int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr, return 0; /* Tell the block device(s) that the sectors can be discarded */ - ret = btrfs_map_block(&root->fs_info->mapping_tree, READ, + ret = btrfs_map_block(&root->fs_info->mapping_tree, WRITE, bytenr, &map_length, &multi, 0); if (!ret) { struct btrfs_bio_stripe *stripe = multi->stripes; -- 1.6.3.3