From mboxrd@z Thu Jan 1 00:00:00 1970 From: jim owens Subject: [RFC 04/12 RESEND PATCH] Btrfs: btrfs_discard_extent must use WRITE with btrfs_map_block. Date: Mon, 04 Jan 2010 16:13:05 -0500 Message-ID: <4B4259E1.6080703@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 b610557..185d273 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1594,7 +1594,7 @@ 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; -- 1.5.6.3