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btrfs: simplify the no-bioc fast path condition in btrfs_map_block

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nr_alloc_stripes can't be one if we are writing to a replacement device,
as it is incremented for that case right above.  Remove the duplicate
checks.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
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 2023-06-27 08:13:24 +02:00 committed by David Sterba
parent 17353a3447
commit b2cc440058
1 changed files with 1 additions and 3 deletions

4
fs/btrfs/volumes.c

@ -6432,9 +6432,7 @@ int btrfs_map_block(struct btrfs_fs_info *fs_info, enum btrfs_map_op op,
* I/O context structure.
*/
if (smap && num_alloc_stripes == 1 &&
!((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && mirror_num > 1) &&
(op == BTRFS_MAP_READ || !dev_replace_is_ongoing ||
!dev_replace->tgtdev)) {
!((map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) && mirror_num > 1)) {
set_io_stripe(smap, map, stripe_index, stripe_offset, stripe_nr);
if (mirror_num_ret)
*mirror_num_ret = mirror_num;