btrfs: store a block_device in struct btrfs_ordered_extent

Store the block device instead of the gendisk in the btrfs_ordered_extent
structure instead of acquiring a reference to it later.

Note: this is from series removing bdgrab/bdput, btrfs is one of the
last users.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 8f60314..0117d86 100644 (file)
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2992,7 +2992,7 @@ static int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent)
                goto out;
        }
 
-       if (ordered_extent->disk)
+       if (ordered_extent->bdev)
                btrfs_rewrite_logical_zoned(ordered_extent);
 
        btrfs_free_io_failure_record(inode, start, end);

diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 6eb41b7..5c0f848 100644 (file)
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -190,8 +190,6 @@ static int __btrfs_add_ordered_extent(struct btrfs_inode *inode, u64 file_offset
        entry->truncated_len = (u64)-1;
        entry->qgroup_rsv = ret;
        entry->physical = (u64)-1;
-       entry->disk = NULL;
-       entry->partno = (u8)-1;
 
        ASSERT(type == BTRFS_ORDERED_REGULAR ||
               type == BTRFS_ORDERED_NOCOW ||

diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h
index 5664720..b2d88ab 100644 (file)
--- a/fs/btrfs/ordered-data.h
+++ b/fs/btrfs/ordered-data.h
@@ -145,8 +145,7 @@ struct btrfs_ordered_extent {
         * command in a workqueue context
         */
        u64 physical;
-       struct gendisk *disk;
-       u8 partno;
+       struct block_device *bdev;
 };
 
 /*

diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c
index 297c0b1..907c2cc 100644 (file)
--- a/fs/btrfs/zoned.c
+++ b/fs/btrfs/zoned.c
@@ -1349,8 +1349,7 @@ void btrfs_record_physical_zoned(struct inode *inode, u64 file_offset,
                return;
 
        ordered->physical = physical;
-       ordered->disk = bio->bi_bdev->bd_disk;
-       ordered->partno = bio->bi_bdev->bd_partno;
+       ordered->bdev = bio->bi_bdev;
 
        btrfs_put_ordered_extent(ordered);
 }
@@ -1362,18 +1361,16 @@ void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered)
        struct extent_map_tree *em_tree;
        struct extent_map *em;
        struct btrfs_ordered_sum *sum;
-       struct block_device *bdev;
        u64 orig_logical = ordered->disk_bytenr;
        u64 *logical = NULL;
        int nr, stripe_len;
 
        /* Zoned devices should not have partitions. So, we can assume it is 0 */
-       ASSERT(ordered->partno == 0);
-       bdev = bdgrab(ordered->disk->part0);
-       if (WARN_ON(!bdev))
+       ASSERT(!bdev_is_partition(ordered->bdev));
+       if (WARN_ON(!ordered->bdev))
                return;
 
-       if (WARN_ON(btrfs_rmap_block(fs_info, orig_logical, bdev,
+       if (WARN_ON(btrfs_rmap_block(fs_info, orig_logical, ordered->bdev,
                                     ordered->physical, &logical, &nr,
                                     &stripe_len)))
                goto out;
@@ -1402,7 +1399,6 @@ void btrfs_rewrite_logical_zoned(struct btrfs_ordered_extent *ordered)
 
 out:
        kfree(logical);
-       bdput(bdev);
 }
 
 bool btrfs_check_meta_write_pointer(struct btrfs_fs_info *fs_info,