btrfs: sink gfp parameter to btrfs_bio_clone

All callers pass GFP_NOFS.
Reviewed-by: NAnand Jain <anand.jain@oracle.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/extent_io.c

@@ -2675,13 +2675,13 @@ btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
 	return bio;
 }
 
-struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask)
+struct bio *btrfs_bio_clone(struct bio *bio)
 {
 	struct btrfs_io_bio *btrfs_bio;
 	struct bio *new;
 
 	/* Bio allocation backed by a bioset does not fail */
-	new = bio_clone_fast(bio, gfp_mask, btrfs_bioset);
+	new = bio_clone_fast(bio, GFP_NOFS, btrfs_bioset);
 	btrfs_bio = btrfs_io_bio(new);
 	btrfs_bio->csum = NULL;
 	btrfs_bio->csum_allocated = NULL;

fs/btrfs/extent_io.h

@@ -466,7 +466,7 @@ struct bio *
 btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
 		gfp_t gfp_flags);
 struct bio *btrfs_io_bio_alloc(gfp_t gfp_mask, unsigned int nr_iovecs);
-struct bio *btrfs_bio_clone(struct bio *bio, gfp_t gfp_mask);
+struct bio *btrfs_bio_clone(struct bio *bio);
 struct bio *btrfs_bio_clone_partial(struct bio *orig, int offset, int size);
 
 struct btrfs_fs_info;

fs/btrfs/inode.c

@@ -8583,7 +8583,7 @@ static void btrfs_submit_direct(struct bio *dio_bio, struct inode *inode,
 
 	skip_sum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM;
 
-	bio = btrfs_bio_clone(dio_bio, GFP_NOFS);
+	bio = btrfs_bio_clone(dio_bio);
 
 	dip = kzalloc(sizeof(*dip), GFP_NOFS);
 	if (!dip) {

fs/btrfs/volumes.c

@@ -6256,7 +6256,7 @@ int btrfs_map_bio(struct btrfs_fs_info *fs_info, struct bio *bio,
 		}
 
 		if (dev_nr < total_devs - 1)
-			bio = btrfs_bio_clone(first_bio, GFP_NOFS);
+			bio = btrfs_bio_clone(first_bio);
 		else
 			bio = first_bio;