From efa7c9f97e3ef624e9a398bf69c15f58eea9f0e8 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Thu, 2 Feb 2017 15:56:53 +0100 Subject: [PATCH] block: Get rid of blk_get_backing_dev_info() blk_get_backing_dev_info() is now a simple dereference. Remove that function and simplify some code around that. Signed-off-by: Jan Kara Signed-off-by: Jens Axboe --- block/blk-core.c | 14 -------------- block/compat_ioctl.c | 7 ++----- block/ioctl.c | 7 ++----- fs/btrfs/disk-io.c | 2 +- fs/btrfs/volumes.c | 2 +- fs/xfs/xfs_buf.c | 3 +-- fs/xfs/xfs_buf.h | 1 - include/linux/backing-dev.h | 2 +- include/linux/blkdev.h | 1 - 9 files changed, 8 insertions(+), 31 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 6375674e719b..a3c29270807e 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -105,20 +105,6 @@ void blk_queue_congestion_threshold(struct request_queue *q) q->nr_congestion_off = nr; } -/** - * blk_get_backing_dev_info - get the address of a queue's backing_dev_info - * @bdev: device - * - * Locates the passed device's request queue and returns the address of its - * backing_dev_info. The return value is never NULL however we may return - * &noop_backing_dev_info if the bdev is not currently open. - */ -struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev) -{ - return bdev->bd_bdi; -} -EXPORT_SYMBOL(blk_get_backing_dev_info); - void blk_rq_init(struct request_queue *q, struct request *rq) { memset(rq, 0, sizeof(*rq)); diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 556826ac7cb4..570021a0dc1c 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -661,7 +661,6 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) struct block_device *bdev = inode->i_bdev; struct gendisk *disk = bdev->bd_disk; fmode_t mode = file->f_mode; - struct backing_dev_info *bdi; loff_t size; unsigned int max_sectors; @@ -708,9 +707,8 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) case BLKFRAGET: if (!arg) return -EINVAL; - bdi = blk_get_backing_dev_info(bdev); return compat_put_long(arg, - (bdi->ra_pages * PAGE_SIZE) / 512); + (bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512); case BLKROGET: /* compatible */ return compat_put_int(arg, bdev_read_only(bdev) != 0); case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */ @@ -728,8 +726,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) case BLKFRASET: if (!capable(CAP_SYS_ADMIN)) return -EACCES; - bdi = blk_get_backing_dev_info(bdev); - bdi->ra_pages = (arg * 512) / PAGE_SIZE; + bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE; return 0; case BLKGETSIZE: size = i_size_read(bdev->bd_inode); diff --git a/block/ioctl.c b/block/ioctl.c index be7f4de3eb3c..7b88820b93d9 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -505,7 +505,6 @@ static int blkdev_bszset(struct block_device *bdev, fmode_t mode, int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, unsigned long arg) { - struct backing_dev_info *bdi; void __user *argp = (void __user *)arg; loff_t size; unsigned int max_sectors; @@ -532,8 +531,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, case BLKFRAGET: if (!arg) return -EINVAL; - bdi = blk_get_backing_dev_info(bdev); - return put_long(arg, (bdi->ra_pages * PAGE_SIZE) / 512); + return put_long(arg, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512); case BLKROGET: return put_int(arg, bdev_read_only(bdev) != 0); case BLKBSZGET: /* get block device soft block size (cf. BLKSSZGET) */ @@ -560,8 +558,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, case BLKFRASET: if(!capable(CAP_SYS_ADMIN)) return -EACCES; - bdi = blk_get_backing_dev_info(bdev); - bdi->ra_pages = (arg * 512) / PAGE_SIZE; + bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE; return 0; case BLKBSZSET: return blkdev_bszset(bdev, mode, argp); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 18004169552c..37a31b12bb0c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1800,7 +1800,7 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits) list_for_each_entry_rcu(device, &info->fs_devices->devices, dev_list) { if (!device->bdev) continue; - bdi = blk_get_backing_dev_info(device->bdev); + bdi = device->bdev->bd_bdi; if (bdi_congested(bdi, bdi_bits)) { ret = 1; break; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 3c3c69c0eee4..b2e70073a10d 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -366,7 +366,7 @@ static noinline void run_scheduled_bios(struct btrfs_device *device) */ blk_start_plug(&plug); - bdi = blk_get_backing_dev_info(device->bdev); + bdi = device->bdev->bd_bdi; limit = btrfs_async_submit_limit(fs_info); limit = limit * 2 / 3; diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 7f0a01f7b592..8bbec20aa138 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -757,7 +757,7 @@ xfs_buf_readahead_map( int nmaps, const struct xfs_buf_ops *ops) { - if (bdi_read_congested(target->bt_bdi)) + if (bdi_read_congested(target->bt_bdev->bd_bdi)) return; xfs_buf_read_map(target, map, nmaps, @@ -1790,7 +1790,6 @@ xfs_alloc_buftarg( btp->bt_mount = mp; btp->bt_dev = bdev->bd_dev; btp->bt_bdev = bdev; - btp->bt_bdi = blk_get_backing_dev_info(bdev); if (xfs_setsize_buftarg_early(btp, bdev)) goto error; diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 8a9d3a9599f0..3c867e5a63e1 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -109,7 +109,6 @@ typedef unsigned int xfs_buf_flags_t; typedef struct xfs_buftarg { dev_t bt_dev; struct block_device *bt_bdev; - struct backing_dev_info *bt_bdi; struct xfs_mount *bt_mount; unsigned int bt_meta_sectorsize; size_t bt_meta_sectormask; diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h index efb6ca992d05..c52a48cb9a66 100644 --- a/include/linux/backing-dev.h +++ b/include/linux/backing-dev.h @@ -191,7 +191,7 @@ static inline struct backing_dev_info *inode_to_bdi(struct inode *inode) sb = inode->i_sb; #ifdef CONFIG_BLOCK if (sb_is_blkdev_sb(sb)) - return blk_get_backing_dev_info(I_BDEV(inode)); + return I_BDEV(inode)->bd_bdi; #endif return sb->s_bdi; } diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e77c1039fd0e..b31137e2afd0 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1187,7 +1187,6 @@ extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *); extern void blk_queue_rq_timeout(struct request_queue *, unsigned int); extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable); extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua); -extern struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev); static inline unsigned short blk_rq_nr_phys_segments(struct request *rq) {