block: convert to bio_first_bvec_all & bio_first_page_all

This patch converts to bio_first_bvec_all() & bio_first_page_all() for
retrieving the 1st bvec/page, and prepares for supporting multipage bvec.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

8 files changed, 13 insertions, 13 deletions

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index bd97908c766f..9f4e6f502b84 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -953,7 +953,7 @@ static void drbd_bm_endio(struct bio *bio)
         struct drbd_bm_aio_ctx *ctx = bio->bi_private;
         struct drbd_device *device = ctx->device;
         struct drbd_bitmap *b = device->bitmap;
-        unsigned int idx = bm_page_to_idx(bio->bi_io_vec[0].bv_page);
+        unsigned int idx = bm_page_to_idx(bio_first_page_all(bio));
 
         if ((ctx->flags & BM_AIO_COPY_PAGES) == 0 &&
             !bm_test_page_unchanged(b->bm_pages[idx]))
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index d70eba30003a..0afa6c8c3857 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -430,7 +430,7 @@ static void put_entry_bdev(struct zram *zram, unsigned long entry)
 
 static void zram_page_end_io(struct bio *bio)
 {
-        struct page *page = bio->bi_io_vec[0].bv_page;
+        struct page *page = bio_first_page_all(bio);
 
         page_endio(page, op_is_write(bio_op(bio)),
                         blk_status_to_errno(bio->bi_status));
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index b4d28928dec5..8399fe0651f2 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -211,7 +211,7 @@ static void write_bdev_super_endio(struct bio *bio)
 
 static void __write_super(struct cache_sb *sb, struct bio *bio)
 {
-        struct cache_sb *out = page_address(bio->bi_io_vec[0].bv_page);
+        struct cache_sb *out = page_address(bio_first_page_all(bio));
         unsigned i;
 
         bio->bi_iter.bi_sector  = SB_SECTOR;
@@ -1166,7 +1166,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page,
         dc->bdev->bd_holder = dc;
 
         bio_init(&dc->sb_bio, dc->sb_bio.bi_inline_vecs, 1);
-        dc->sb_bio.bi_io_vec[0].bv_page = sb_page;
+        bio_first_bvec_all(&dc->sb_bio)->bv_page = sb_page;
         get_page(sb_page);
 
         if (cached_dev_init(dc, sb->block_size << 9))
@@ -1810,7 +1810,7 @@ void bch_cache_release(struct kobject *kobj)
                 free_fifo(&ca->free[i]);
 
         if (ca->sb_bio.bi_inline_vecs[0].bv_page)
-                put_page(ca->sb_bio.bi_io_vec[0].bv_page);
+                put_page(bio_first_page_all(&ca->sb_bio));
 
         if (!IS_ERR_OR_NULL(ca->bdev))
                 blkdev_put(ca->bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
@@ -1864,7 +1864,7 @@ static int register_cache(struct cache_sb *sb, struct page *sb_page,
         ca->bdev->bd_holder = ca;
 
         bio_init(&ca->sb_bio, ca->sb_bio.bi_inline_vecs, 1);
-        ca->sb_bio.bi_io_vec[0].bv_page = sb_page;
+        bio_first_bvec_all(&ca->sb_bio)->bv_page = sb_page;
         get_page(sb_page);
 
         if (blk_queue_discard(bdev_get_queue(ca->bdev)))
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 5982c8a71f02..38a6b091bc25 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -563,7 +563,7 @@ blk_status_t btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         /* we need the actual starting offset of this extent in the file */
         read_lock(&em_tree->lock);
         em = lookup_extent_mapping(em_tree,
-                                   page_offset(bio->bi_io_vec->bv_page),
+                                   page_offset(bio_first_page_all(bio)),
                                    PAGE_SIZE);
         read_unlock(&em_tree->lock);
         if (!em)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index e1a7f3cb5be9..4d5cb6e93c80 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -8074,7 +8074,7 @@ static void btrfs_retry_endio_nocsum(struct bio *bio)
         ASSERT(bio->bi_vcnt == 1);
         io_tree = &BTRFS_I(inode)->io_tree;
         failure_tree = &BTRFS_I(inode)->io_failure_tree;
-        ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(inode));
+        ASSERT(bio_first_bvec_all(bio)->bv_len == btrfs_inode_sectorsize(inode));
 
         done->uptodate = 1;
         ASSERT(!bio_flagged(bio, BIO_CLONED));
@@ -8164,7 +8164,7 @@ static void btrfs_retry_endio(struct bio *bio)
         uptodate = 1;
 
         ASSERT(bio->bi_vcnt == 1);
-        ASSERT(bio->bi_io_vec->bv_len == btrfs_inode_sectorsize(done->inode));
+        ASSERT(bio_first_bvec_all(bio)->bv_len == btrfs_inode_sectorsize(done->inode));
 
         io_tree = &BTRFS_I(inode)->io_tree;
         failure_tree = &BTRFS_I(inode)->io_failure_tree;
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 516fa0d3ff9c..455f086cce3d 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -56,7 +56,7 @@ static void f2fs_read_end_io(struct bio *bio)
         int i;
 
 #ifdef CONFIG_F2FS_FAULT_INJECTION
-        if (time_to_inject(F2FS_P_SB(bio->bi_io_vec->bv_page), FAULT_IO)) {
+        if (time_to_inject(F2FS_P_SB(bio_first_page_all(bio)), FAULT_IO)) {
                 f2fs_show_injection_info(FAULT_IO);
                 bio->bi_status = BLK_STS_IOERR;
         }
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 293ead59eccc..96c736313faa 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -240,7 +240,7 @@ static void hib_init_batch(struct hib_bio_batch *hb)
 static void hib_end_io(struct bio *bio)
 {
         struct hib_bio_batch *hb = bio->bi_private;
-        struct page *page = bio->bi_io_vec[0].bv_page;
+        struct page *page = bio_first_page_all(bio);
 
         if (bio->bi_status) {
                 pr_alert("Read-error on swap-device (%u:%u:%Lu)\n",
diff --git a/mm/page_io.c b/mm/page_io.c
index e93f1a4cacd7..b41cf9644585 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -50,7 +50,7 @@ static struct bio *get_swap_bio(gfp_t gfp_flags,
 
 void end_swap_bio_write(struct bio *bio)
 {
-        struct page *page = bio->bi_io_vec[0].bv_page;
+        struct page *page = bio_first_page_all(bio);
 
         if (bio->bi_status) {
                 SetPageError(page);
@@ -122,7 +122,7 @@ static void swap_slot_free_notify(struct page *page)
 
 static void end_swap_bio_read(struct bio *bio)
 {
-        struct page *page = bio->bi_io_vec[0].bv_page;
+        struct page *page = bio_first_page_all(bio);
         struct task_struct *waiter = bio->bi_private;
 
         if (bio->bi_status) {