diff options
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 51 |
1 files changed, 24 insertions, 27 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 24615c76c1d0..749f5984425d 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * linux/fs/block_dev.c * @@ -29,8 +30,6 @@ #include <linux/namei.h> #include <linux/log2.h> #include <linux/cleancache.h> -#include <linux/dax.h> -#include <linux/badblocks.h> #include <linux/task_io_accounting_ops.h> #include <linux/falloc.h> #include <linux/uaccess.h> @@ -210,7 +209,6 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, struct bio bio; ssize_t ret; blk_qc_t qc; - int i; struct bvec_iter_all iter_all; if ((pos | iov_iter_alignment(iter)) & @@ -261,10 +259,11 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, } __set_current_state(TASK_RUNNING); - bio_for_each_segment_all(bvec, &bio, i, iter_all) { + bio_for_each_segment_all(bvec, &bio, iter_all) { if (should_dirty && !PageCompound(bvec->bv_page)) set_page_dirty_lock(bvec->bv_page); - put_page(bvec->bv_page); + if (!bio_flagged(&bio, BIO_NO_PAGE_REF)) + put_page(bvec->bv_page); } if (unlikely(bio.bi_status)) @@ -339,9 +338,8 @@ static void blkdev_bio_end_io(struct bio *bio) if (!bio_flagged(bio, BIO_NO_PAGE_REF)) { struct bvec_iter_all iter_all; struct bio_vec *bvec; - int i; - bio_for_each_segment_all(bvec, bio, i, iter_all) + bio_for_each_segment_all(bvec, bio, iter_all) put_page(bvec->bv_page); } bio_put(bio); @@ -789,17 +787,9 @@ static struct inode *bdev_alloc_inode(struct super_block *sb) return &ei->vfs_inode; } -static void bdev_i_callback(struct rcu_head *head) -{ - struct inode *inode = container_of(head, struct inode, i_rcu); - struct bdev_inode *bdi = BDEV_I(inode); - - kmem_cache_free(bdev_cachep, bdi); -} - -static void bdev_destroy_inode(struct inode *inode) +static void bdev_free_inode(struct inode *inode) { - call_rcu(&inode->i_rcu, bdev_i_callback); + kmem_cache_free(bdev_cachep, BDEV_I(inode)); } static void init_once(void *foo) @@ -839,7 +829,7 @@ static void bdev_evict_inode(struct inode *inode) static const struct super_operations bdev_sops = { .statfs = simple_statfs, .alloc_inode = bdev_alloc_inode, - .destroy_inode = bdev_destroy_inode, + .free_inode = bdev_free_inode, .drop_inode = generic_delete_inode, .evict_inode = bdev_evict_inode, }; @@ -1416,20 +1406,27 @@ void check_disk_size_change(struct gendisk *disk, struct block_device *bdev, */ int revalidate_disk(struct gendisk *disk) { - struct block_device *bdev; int ret = 0; if (disk->fops->revalidate_disk) ret = disk->fops->revalidate_disk(disk); - bdev = bdget_disk(disk, 0); - if (!bdev) - return ret; - mutex_lock(&bdev->bd_mutex); - check_disk_size_change(disk, bdev, ret == 0); - bdev->bd_invalidated = 0; - mutex_unlock(&bdev->bd_mutex); - bdput(bdev); + /* + * Hidden disks don't have associated bdev so there's no point in + * revalidating it. + */ + if (!(disk->flags & GENHD_FL_HIDDEN)) { + struct block_device *bdev = bdget_disk(disk, 0); + + if (!bdev) + return ret; + + mutex_lock(&bdev->bd_mutex); + check_disk_size_change(disk, bdev, ret == 0); + bdev->bd_invalidated = 0; + mutex_unlock(&bdev->bd_mutex); + bdput(bdev); + } return ret; } EXPORT_SYMBOL(revalidate_disk); |