[PATCH 18/78] zram: use set_capacity_and_notify

Christoph Hellwig
2020-11-16T15:01:30Z

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>
---
drivers/block/zram/zram_drv.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 1b697208d66157..6d15d51cee2b7e 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -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);