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zram: use set_capacity_and_notify

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Use set_capacity_and_notify to set the size of both the disk and block
device.  This also gets the uevent notifications for the resize for free.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2020-11-16 15:57:09 +01:00 committed by Jens Axboe
parent 230272b4f8
commit 6e017a3931
1 changed files with 2 additions and 5 deletions
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7
drivers/block/zram/zram_drv.c
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@ -1695,7 +1695,7 @@ static void zram_reset_device(struct zram *zram)
disksize = zram->disksize;
zram->disksize = 0;
set_capacity(zram->disk, 0);
set_capacity_and_notify(zram->disk, 0);
part_stat_set_all(&zram->disk->part0, 0);
up_write(&zram->init_lock);
@ -1741,9 +1741,7 @@ static ssize_t disksize_store(struct device *dev,
zram->comp = comp;
zram->disksize = disksize;
set_capacity(zram->disk, zram->disksize >> SECTOR_SHIFT);
revalidate_disk_size(zram->disk, true);
set_capacity_and_notify(zram->disk, zram->disksize >> SECTOR_SHIFT);
up_write(&zram->init_lock);
return len;
@ -1790,7 +1788,6 @@ static ssize_t reset_store(struct device *dev,
/* Make sure all the pending I/O are finished */
fsync_bdev(bdev);
zram_reset_device(zram);
revalidate_disk_size(zram->disk, true);
bdput(bdev);
mutex_lock(&bdev->bd_mutex);