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btrfs: don't abuse REQ_OP_* flags for btrfs_map_block

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btrfs_map_block supports different types of mappings, which to a large
extent resemble block layer operations.  But they don't always do, and
currently btrfs dangerously overlays it's own flag over the block layer
flags.  This is just asking for a conflict, so introduce a different
map flags enum inside of btrfs instead.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Christoph Hellwig
2016-10-27 09:27:36 +02:00
committed by David Sterba
parent e5517c2a5a
commit cf8cddd38b
9 changed files with 70 additions and 49 deletions
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4
fs/btrfs/reada.c
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@@ -354,8 +354,8 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root,
* map block
*/
length = blocksize;
ret = btrfs_map_block(fs_info, REQ_GET_READ_MIRRORS, logical, &length,
&bbio, 0);
ret = btrfs_map_block(fs_info, BTRFS_MAP_GET_READ_MIRRORS, logical,
&length, &bbio, 0);
if (ret || !bbio || length < blocksize)
goto error;