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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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2
fs/btrfs/check-integrity.c
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@@ -1539,7 +1539,7 @@ static int btrfsic_map_block(struct btrfsic_state *state, u64 bytenr, u32 len,
struct btrfs_device *device;
length = len;
ret = btrfs_map_block(state->root->fs_info, READ,
ret = btrfs_map_block(state->root->fs_info, BTRFS_MAP_READ,
bytenr, &length, &multi, mirror_num);
if (ret) {