Nitesh Shetty 711f727f7b null_blk: Fix: memory release when memory_backed=1 ...

[ Upstream commit 8cfb98196c ]

Memory/pages are not freed, when unloading nullblk driver.

Steps to reproduce issue
  1.free -h
        total        used        free      shared  buff/cache   available
Mem:    7.8Gi       260Mi       7.1Gi       3.0Mi       395Mi       7.3Gi
Swap:      0B          0B          0B
  2.modprobe null_blk memory_backed=1
  3.dd if=/dev/urandom of=/dev/nullb0 oflag=direct bs=1M count=1000
  4.modprobe -r null_blk
  5.free -h
        total        used        free      shared  buff/cache   available
Mem:    7.8Gi       1.2Gi       6.1Gi       3.0Mi       398Mi       6.3Gi
Swap:      0B          0B          0B

Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com>
Link: https://lore.kernel.org/r/20230605062354.24785-1-nj.shetty@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-06-28 11:12:39 +02:00

..

aoe

block: aoe: use DEFINE_SHOW_ATTRIBUTE to simplify aoe_debugfs

2022-09-21 19:49:24 -06:00

drbd

drbd: correctly submit flush bio on barrier

2023-05-11 23:03:39 +09:00

mtip32xx

block: move from strlcpy with unused retval to strscpy

2022-09-21 19:45:04 -06:00

null_blk

null_blk: Fix: memory release when memory_backed=1

2023-06-28 11:12:39 +02:00

paride

block: Change the type of req_op() and bio_op() into enum req_op

2022-07-14 12:14:30 -06:00

rnbd

block/rnbd: replace REQ_OP_FLUSH with REQ_OP_WRITE

2023-06-09 10:34:09 +02:00

xen-blkback

Merge tag 'for-linus-6.0-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

2022-09-03 13:23:11 -07:00

zram

Merge tag 'mm-stable-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2022-10-14 12:28:43 -07:00

amiflop.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00

ataflop.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00

brd.c

brd: use radix_tree_maybe_preload instead of radix_tree_preload

2023-03-10 09:34:34 +01:00

floppy.c

floppy: Fix memory leak in do_floppy_init()

2022-12-31 13:33:11 +01:00

Kconfig

ublk_drv: comment on ublk_driver entry of Kconfig

2022-10-31 07:23:24 -06:00

loop.c

loop: LOOP_CONFIGURE: send uevents for partitions

2023-04-06 12:10:47 +02:00

Makefile

remove the sx8 block driver

2022-08-02 17:22:46 -06:00

n64cart.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00

nbd.c

nbd: Fix debugfs_create_dir error checking

2023-06-09 10:34:09 +02:00

pktcdvd.c

pktcdvd: check for NULL returna fter calling bio_split_to_limits()

2023-01-24 07:24:37 +01:00

ps3disk.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00

ps3vram.c

block: handle bio_split_to_limits() NULL return

2023-01-18 11:58:33 +01:00

rbd_types.h

libceph, rbd: replace zero-length array with flexible-array

2020-06-01 13:22:53 +02:00

rbd.c

rbd: get snapshot context after exclusive lock is ensured to be held

2023-06-14 11:15:28 +02:00

sunvdc.c

block: sunvdc: add check for mdesc_grab() returning NULL

2023-03-22 13:33:47 +01:00

swim3.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00

swim_asm.S

…

swim.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00

ublk_drv.c

ublk: fix AB-BA lockdep warning

2023-06-09 10:34:16 +02:00

virtio_blk.c

virtio_blk: Fix signedness bug in virtblk_prep_rq()

2023-01-12 12:02:54 +01:00

xen-blkfront.c

xen/blkfront: Only check REQ_FUA for writes

2023-06-21 16:00:53 +02:00

z2ram.c

block: remove blk_cleanup_disk

2022-06-28 06:33:15 -06:00