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zram: do not call set_blocksize

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set_blocksize is used by file systems to use their preferred buffer cache
block size.  Block drivers should not set it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-11-16 15:43:46 +01:00 committed by Jens Axboe
parent a6419fd810
commit ee763e2143
2 changed files with 1 additions and 11 deletions
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11
drivers/block/zram/zram_drv.c
View file

@ -403,13 +403,10 @@ static void reset_bdev(struct zram *zram)
return;
bdev = zram->bdev;
if (zram->old_block_size)
set_blocksize(bdev, zram->old_block_size);
blkdev_put(bdev, FMODE_READ|FMODE_WRITE|FMODE_EXCL);
/* hope filp_close flush all of IO */
filp_close(zram->backing_dev, NULL);
zram->backing_dev = NULL;
zram->old_block_size = 0;
zram->bdev = NULL;
zram->disk->fops = &zram_devops;
kvfree(zram->bitmap);
@ -454,7 +451,7 @@ static ssize_t backing_dev_store(struct device *dev,
struct file *backing_dev = NULL;
struct inode *inode;
struct address_space *mapping;
unsigned int bitmap_sz, old_block_size = 0;
unsigned int bitmap_sz;
unsigned long nr_pages, *bitmap = NULL;
struct block_device *bdev = NULL;
int err;
@ -509,14 +506,8 @@ static ssize_t backing_dev_store(struct device *dev,
goto out;
}
old_block_size = block_size(bdev);
err = set_blocksize(bdev, PAGE_SIZE);
if (err)
goto out;
reset_bdev(zram);
zram->old_block_size = old_block_size;
zram->bdev = bdev;
zram->backing_dev = backing_dev;
zram->bitmap = bitmap;

1
drivers/block/zram/zram_drv.h
View file

@ -118,7 +118,6 @@ struct zram {
bool wb_limit_enable;
u64 bd_wb_limit;
struct block_device *bdev;
unsigned int old_block_size;
unsigned long *bitmap;
unsigned long nr_pages;
#endif