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zram: port block device access to file

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Link: https://lore.kernel.org/r/20240123-vfs-bdev-file-v2-12-adbd023e19cc@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2024-01-23 14:26:29 +01:00
parent 217759bbb9
commit be914f8fd2
2 changed files with 14 additions and 14 deletions
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26
drivers/block/zram/zram_drv.c
View File

@@ -426,11 +426,11 @@ static void reset_bdev(struct zram *zram)
if (!zram->backing_dev)
return;
bdev_release(zram->bdev_handle);
fput(zram->bdev_file);
/* hope filp_close flush all of IO */
filp_close(zram->backing_dev, NULL);
zram->backing_dev = NULL;
zram->bdev_handle = NULL;
zram->bdev_file = NULL;
zram->disk->fops = &zram_devops;
kvfree(zram->bitmap);
zram->bitmap = NULL;
@@ -476,7 +476,7 @@ static ssize_t backing_dev_store(struct device *dev,
struct address_space *mapping;
unsigned int bitmap_sz;
unsigned long nr_pages, *bitmap = NULL;
struct bdev_handle *bdev_handle = NULL;
struct file *bdev_file = NULL;
int err;
struct zram *zram = dev_to_zram(dev);
@@ -513,11 +513,11 @@ static ssize_t backing_dev_store(struct device *dev,
goto out;
}
bdev_handle = bdev_open_by_dev(inode->i_rdev,
bdev_file = bdev_file_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;
if (IS_ERR(bdev_file)) {
err = PTR_ERR(bdev_file);
bdev_file = NULL;
goto out;
}
@@ -531,7 +531,7 @@ static ssize_t backing_dev_store(struct device *dev,
reset_bdev(zram);
zram->bdev_handle = bdev_handle;
zram->bdev_file = bdev_file;
zram->backing_dev = backing_dev;
zram->bitmap = bitmap;
zram->nr_pages = nr_pages;
@@ -544,8 +544,8 @@ static ssize_t backing_dev_store(struct device *dev,
out:
kvfree(bitmap);
if (bdev_handle)
bdev_release(bdev_handle);
if (bdev_file)
fput(bdev_file);
if (backing_dev)
filp_close(backing_dev, NULL);
@@ -587,7 +587,7 @@ static void read_from_bdev_async(struct zram *zram, struct page *page,
{
struct bio *bio;
bio = bio_alloc(zram->bdev_handle->bdev, 1, parent->bi_opf, GFP_NOIO);
bio = bio_alloc(file_bdev(zram->bdev_file), 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);
@@ -703,7 +703,7 @@ static ssize_t writeback_store(struct device *dev,
continue;
}
bio_init(&bio, zram->bdev_handle->bdev, &bio_vec, 1,
bio_init(&bio, file_bdev(zram->bdev_file), &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);
@@ -785,7 +785,7 @@ static void zram_sync_read(struct work_struct *work)
struct bio_vec bv;
struct bio bio;
bio_init(&bio, zw->zram->bdev_handle->bdev, &bv, 1, REQ_OP_READ);
bio_init(&bio, file_bdev(zw->zram->bdev_file), &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);

2
drivers/block/zram/zram_drv.h
View File

@@ -132,7 +132,7 @@ struct zram {
spinlock_t wb_limit_lock;
bool wb_limit_enable;
u64 bd_wb_limit;
struct bdev_handle *bdev_handle;
struct file *bdev_file;
unsigned long *bitmap;
unsigned long nr_pages;
#endif