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authorJan Kara <jack@suse.cz>2023-09-27 11:34:14 +0200
committerChristian Brauner <brauner@kernel.org>2023-10-28 13:29:17 +0200
commiteed993a0910338fa751191264d5caa2c386c3f8f (patch)
tree462a7ec08558f41ea26393069899a424004373ac /drivers/block
parentxen/blkback: Convert to bdev_open_by_dev() (diff)
downloadlinux-eed993a0910338fa751191264d5caa2c386c3f8f.tar.xz
linux-eed993a0910338fa751191264d5caa2c386c3f8f.zip
zram: Convert to use bdev_open_by_dev()
Convert zram to use bdev_open_by_dev() and pass the handle around. CC: Minchan Kim <minchan@kernel.org> CC: Sergey Senozhatsky <senozhatsky@chromium.org> Acked-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian Brauner <brauner@kernel.org> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230927093442.25915-8-jack@suse.cz Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/zram/zram_drv.c31
-rw-r--r--drivers/block/zram/zram_drv.h2
2 files changed, 15 insertions, 18 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 06673c6ca255..d77d3664ca08 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -414,17 +414,14 @@ static ssize_t writeback_limit_show(struct device *dev,
static void reset_bdev(struct zram *zram)
{
- struct block_device *bdev;
-
if (!zram->backing_dev)
return;
- bdev = zram->bdev;
- blkdev_put(bdev, zram);
+ bdev_release(zram->bdev_handle);
/* hope filp_close flush all of IO */
filp_close(zram->backing_dev, NULL);
zram->backing_dev = NULL;
- zram->bdev = NULL;
+ zram->bdev_handle = NULL;
zram->disk->fops = &zram_devops;
kvfree(zram->bitmap);
zram->bitmap = NULL;
@@ -470,7 +467,7 @@ static ssize_t backing_dev_store(struct device *dev,
struct address_space *mapping;
unsigned int bitmap_sz;
unsigned long nr_pages, *bitmap = NULL;
- struct block_device *bdev = NULL;
+ struct bdev_handle *bdev_handle = NULL;
int err;
struct zram *zram = dev_to_zram(dev);
@@ -507,11 +504,11 @@ static ssize_t backing_dev_store(struct device *dev,
goto out;
}
- bdev = blkdev_get_by_dev(inode->i_rdev, BLK_OPEN_READ | BLK_OPEN_WRITE,
- zram, NULL);
- if (IS_ERR(bdev)) {
- err = PTR_ERR(bdev);
- bdev = NULL;
+ bdev_handle = bdev_open_by_dev(inode->i_rdev,
+ BLK_OPEN_READ | BLK_OPEN_WRITE, zram, NULL);
+ if (IS_ERR(bdev_handle)) {
+ err = PTR_ERR(bdev_handle);
+ bdev_handle = NULL;
goto out;
}
@@ -525,7 +522,7 @@ static ssize_t backing_dev_store(struct device *dev,
reset_bdev(zram);
- zram->bdev = bdev;
+ zram->bdev_handle = bdev_handle;
zram->backing_dev = backing_dev;
zram->bitmap = bitmap;
zram->nr_pages = nr_pages;
@@ -538,8 +535,8 @@ static ssize_t backing_dev_store(struct device *dev,
out:
kvfree(bitmap);
- if (bdev)
- blkdev_put(bdev, zram);
+ if (bdev_handle)
+ bdev_release(bdev_handle);
if (backing_dev)
filp_close(backing_dev, NULL);
@@ -581,7 +578,7 @@ static void read_from_bdev_async(struct zram *zram, struct page *page,
{
struct bio *bio;
- bio = bio_alloc(zram->bdev, 1, parent->bi_opf, GFP_NOIO);
+ bio = bio_alloc(zram->bdev_handle->bdev, 1, parent->bi_opf, GFP_NOIO);
bio->bi_iter.bi_sector = entry * (PAGE_SIZE >> 9);
__bio_add_page(bio, page, PAGE_SIZE, 0);
bio_chain(bio, parent);
@@ -697,7 +694,7 @@ static ssize_t writeback_store(struct device *dev,
continue;
}
- bio_init(&bio, zram->bdev, &bio_vec, 1,
+ bio_init(&bio, zram->bdev_handle->bdev, &bio_vec, 1,
REQ_OP_WRITE | REQ_SYNC);
bio.bi_iter.bi_sector = blk_idx * (PAGE_SIZE >> 9);
__bio_add_page(&bio, page, PAGE_SIZE, 0);
@@ -779,7 +776,7 @@ static void zram_sync_read(struct work_struct *work)
struct bio_vec bv;
struct bio bio;
- bio_init(&bio, zw->zram->bdev, &bv, 1, REQ_OP_READ);
+ bio_init(&bio, zw->zram->bdev_handle->bdev, &bv, 1, REQ_OP_READ);
bio.bi_iter.bi_sector = zw->entry * (PAGE_SIZE >> 9);
__bio_add_page(&bio, zw->page, PAGE_SIZE, 0);
zw->error = submit_bio_wait(&bio);
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index ca7a15bd4845..d090753f97be 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -132,7 +132,7 @@ struct zram {
spinlock_t wb_limit_lock;
bool wb_limit_enable;
u64 bd_wb_limit;
- struct block_device *bdev;
+ struct bdev_handle *bdev_handle;
unsigned long *bitmap;
unsigned long nr_pages;
#endif