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authorChristoph Hellwig <hch@lst.de>2016-11-25 09:07:47 +0100
committerDavid Sterba <dsterba@suse.com>2016-11-30 13:45:19 +0100
commit80ace3e40390ad0a85606b3a1450eb723070c9a9 (patch)
tree2c739d8f63e213c17c0f6c45284c0daa345c9c58 /fs/btrfs
parent974b1adc3b103fae1dbc1fe6a8aceeca2878f20e (diff)
downloadlinux-80ace3e40390ad0a85606b3a1450eb723070c9a9.tar.bz2
btrfs: don't access the bio directly in the raid5/6 code
Just use bio_for_each_segment_all to iterate over all segments. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Omar Sandoval <osandov@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/raid56.c16
1 files changed, 6 insertions, 10 deletions
diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index d016d4a79864..eece126d6973 100644
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -1144,10 +1144,10 @@ static void validate_rbio_for_rmw(struct btrfs_raid_bio *rbio)
static void index_rbio_pages(struct btrfs_raid_bio *rbio)
{
struct bio *bio;
+ struct bio_vec *bvec;
u64 start;
unsigned long stripe_offset;
unsigned long page_index;
- struct page *p;
int i;
spin_lock_irq(&rbio->bio_list_lock);
@@ -1156,10 +1156,8 @@ static void index_rbio_pages(struct btrfs_raid_bio *rbio)
stripe_offset = start - rbio->bbio->raid_map[0];
page_index = stripe_offset >> PAGE_SHIFT;
- for (i = 0; i < bio->bi_vcnt; i++) {
- p = bio->bi_io_vec[i].bv_page;
- rbio->bio_pages[page_index + i] = p;
- }
+ bio_for_each_segment_all(bvec, bio, i)
+ rbio->bio_pages[page_index + i] = bvec->bv_page;
}
spin_unlock_irq(&rbio->bio_list_lock);
}
@@ -1433,13 +1431,11 @@ static int fail_bio_stripe(struct btrfs_raid_bio *rbio,
*/
static void set_bio_pages_uptodate(struct bio *bio)
{
+ struct bio_vec *bvec;
int i;
- struct page *p;
- for (i = 0; i < bio->bi_vcnt; i++) {
- p = bio->bi_io_vec[i].bv_page;
- SetPageUptodate(p);
- }
+ bio_for_each_segment_all(bvec, bio, i)
+ SetPageUptodate(bvec->bv_page);
}
/*