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authorZhao Lei <zhaolei@cn.fujitsu.com>2015-02-12 15:42:16 +0800
committerDavid Sterba <dsterba@suse.cz>2015-02-16 18:48:44 +0100
commit08da757d3f29e9d33480ae1c44b557a2514d70c5 (patch)
treed4a3b2df5f7766cbf5fe066f1d21869ff9e4be4f /fs/btrfs/volumes.c
parenta688a04aab72a775e07fe460f563b46f7791cfc1 (diff)
btrfs: cleanup: use for() loop in btrfs_map_bio()
for() is obviously better in these code block, and remove noused init-value to reduce about 6 bytes binary size. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'fs/btrfs/volumes.c')
-rw-r--r--fs/btrfs/volumes.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 30c6074f3d00..d7d1dde5f2ff 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5820,8 +5820,8 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
u64 length = 0;
u64 map_length;
int ret;
- int dev_nr = 0;
- int total_devs = 1;
+ int dev_nr;
+ int total_devs;
struct btrfs_bio *bbio = NULL;
length = bio->bi_iter.bi_size;
@@ -5862,11 +5862,10 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
BUG();
}
- while (dev_nr < total_devs) {
+ for (dev_nr = 0; dev_nr < total_devs; dev_nr++) {
dev = bbio->stripes[dev_nr].dev;
if (!dev || !dev->bdev || (rw & WRITE && !dev->writeable)) {
bbio_error(bbio, first_bio, logical);
- dev_nr++;
continue;
}
@@ -5879,7 +5878,6 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
ret = breakup_stripe_bio(root, bbio, first_bio, dev,
dev_nr, rw, async_submit);
BUG_ON(ret);
- dev_nr++;
continue;
}
@@ -5894,7 +5892,6 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
submit_stripe_bio(root, bbio, bio,
bbio->stripes[dev_nr].physical, dev_nr, rw,
async_submit);
- dev_nr++;
}
btrfs_bio_counter_dec(root->fs_info);
return 0;