leapis.com/syzbot-assets/12307f47d87c/bzImage-5254c0cb.xz
The issue was bisected to:
commit ea4452de2ae987342fadbdd2c044034e6480daad
Author: Qi Zheng
Date: Fri Nov 18 10:00:11 2022 +
mm: fix unexpected changes to {failslab|fail_page_alloc}.attr
bisection log: https://syzkaller.app
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the drm-panfrost shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct panfrost_device.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the drm-msm_gem shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct msm_drm_private.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the i915_gem_mm shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct drm_i915_private.
Signed-off-by: Qi
Use new APIs to dynamically allocate the drm-ttm_pool shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
Acked-by: Daniel Vetter
CC: Christian Koenig
CC: Huang Rui
CC: David Airlie
CC: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/ttm/ttm_pool.c | 23
update before freeing memory.
So we introduce a new pool_shrink_rwsem to implement a private
ttm_pool_synchronize_shrinkers(), so as to achieve the same purpose.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
Reviewed-by: Christian König
Acked-by: Daniel Vetter
---
drivers/gpu/drm/ttm
: Qi Zheng
Reviewed-by: Muchun Song
---
mm/shrinker_debug.c | 16 +---
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
index ee0cddb4530f..e4ce509f619e 100644
--- a/mm/shrinker_debug.c
+++ b/mm/shrinker_debug.c
@@ -51,17 +51,12
The mm/vmscan.c file is too large, so separate the shrinker-related
code from it into a separate file. No functional changes.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
mm/Makefile | 4 +-
mm/internal.h | 2 +
mm/shrinker.c | 709
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/shrin
Reviewed-by
Changlog in v4 -> part 1 v1:
- split from the previous large patchset
- fix comment format in [PATCH v4 01/48] (pointed by Muchun Song)
- change to use kzalloc_node() and fix typo in [PATCH v4 44/48]
(pointed by Dave Chinner)
- collect Reviewed-bys
- rebase onto the next-
On 2023/8/24 11:35, Qi Zheng wrote:
Hi all,
This series is some cleanups split from the previous patchset[1], I dropped the
[PATCH v2 5/5] which is more related to the main lockless patch.
This series is based on the next-20230823.
Comments and suggestions are welcome.
[1].
https
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the drm-panfrost shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct panfrost_device.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the drm-msm_gem shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct msm_drm_private.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the i915_gem_mm shrinker, so that it can be freed
asynchronously via RCU. Then it doesn't need to wait for RCU read-side
critical section when releasing the struct drm_i915_private.
Signed-off-by: Qi
Use new APIs to dynamically allocate the drm-ttm_pool shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
Acked-by: Daniel Vetter
CC: Christian Koenig
CC: Huang Rui
CC: David Airlie
CC: dri-devel@lists.freedesktop.org
---
drivers/gpu/drm/ttm/ttm_pool.c | 23
update before freeing memory.
So we introduce a new pool_shrink_rwsem to implement a private
ttm_pool_synchronize_shrinkers(), so as to achieve the same purpose.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
Reviewed-by: Christian König
Acked-by: Daniel Vetter
---
drivers/gpu/drm/ttm
: Qi Zheng
Reviewed-by: Muchun Song
---
mm/shrinker_debug.c | 16 +---
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
index ee0cddb4530f..e4ce509f619e 100644
--- a/mm/shrinker_debug.c
+++ b/mm/shrinker_debug.c
@@ -51,17 +51,12
The mm/vmscan.c file is too large, so separate the shrinker-related
code from it into a separate file. No functional changes.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
mm/Makefile | 4 +-
mm/internal.h | 2 +
mm/shrinker.c | 709
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/shrin
- collect Reviewed-bys
- rebase onto the next-20230815
Qi Zheng (4):
mm: move some shrinker-related function declarations to mm/internal.h
mm: vmscan: move shrinker-related code into a separate file
mm: shrinker: remove redundant shrinker_rwsem in debugfs operations
drm/ttm:
Hi Daniel,
On 2023/8/22 21:56, Daniel Vetter wrote:
On Mon, Aug 07, 2023 at 07:09:31PM +0800, Qi Zheng wrote:
Currently, the synchronize_shrinkers() is only used by TTM pool. It only
requires that no shrinkers run in parallel.
After we use RCU+refcount method to implement the lockless slab
On 2023/8/17 19:23, Qi Zheng wrote:
Hi all,
To make reviewing and updating easier, I've chosen to split the previous
patchset[1] into the following three parts:
part 1: some cleanups and preparations
part 2: introduce new APIs and convert all shrinnkers to use these
part 3: impl
/
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/memcontrol.h | 12 +-
include/linux/shrinker.h | 17 +++
mm/shrinker.c | 249 +++--
3 files changed, 171 insertions(+), 107 deletions(-)
diff --git a/include/linux/memcontrol.h
update before freeing memory.
So we introduce a new pool_shrink_rwsem to implement a private
ttm_pool_synchronize_shrinkers(), so as to achieve the same purpose.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
Reviewed-by: Christian König
---
drivers/gpu/drm/ttm/ttm_pool.c | 17
: Qi Zheng
Reviewed-by: Muchun Song
---
mm/shrinker_debug.c | 16 +---
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
index ee0cddb4530f..e4ce509f619e 100644
--- a/mm/shrinker_debug.c
+++ b/mm/shrinker_debug.c
@@ -51,17 +51,12
The mm/vmscan.c file is too large, so separate the shrinker-related
code from it into a separate file. No functional changes.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
mm/Makefile | 4 +-
mm/internal.h | 2 +
mm/shrinker.c | 709
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/shrin
(pointed by Dave Chinner)
- collect Reviewed-bys
- rebase onto the next-20230815
Qi Zheng (5):
mm: move some shrinker-related function declarations to mm/internal.h
mm: vmscan: move shrinker-related code into a separate file
mm: shrinker: remove redundant shrinker_rwsem in debugfs operation
-idmapping/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url:
https://github.com/intel-lab-lkp/linux/commits/Qi-Zhe
Hi Christian,
On 2023/8/16 17:14, Christian König wrote:
Am 16.08.23 um 10:34 schrieb Qi Zheng:
Currently, the synchronize_shrinkers() is only used by TTM pool. It only
requires that no shrinkers run in parallel.
After we use RCU+refcount method to implement the lockless slab shrink,
we can
/
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/memcontrol.h | 12 +-
include/linux/shrinker.h | 17 +++
mm/shrinker.c | 249 +++--
3 files changed, 171 insertions(+), 107 deletions(-)
diff --git a/include/linux/memcontrol.h
update before freeing memory.
So we introduce a new pool_shrink_rwsem to implement a private
synchronize_shrinkers(), so as to achieve the same purpose.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/gpu/drm/ttm/ttm_pool.c | 15 +++
include/linux/shrinker.h | 1
: Qi Zheng
Reviewed-by: Muchun Song
---
mm/shrinker_debug.c | 16 +---
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
index 3ab53fad8876..61702bdc1af4 100644
--- a/mm/shrinker_debug.c
+++ b/mm/shrinker_debug.c
@@ -49,17 +49,12
The mm/vmscan.c file is too large, so separate the shrinker-related
code from it into a separate file. No functional changes.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
mm/Makefile | 4 +-
mm/internal.h | 2 +
mm/shrinker.c | 709
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/shrin
e to use kzalloc_node() and fix typo in [PATCH v4 44/48]
(pointed by Dave Chinner)
- collect Reviewed-bys
- rebase onto the next-20230815
Qi Zheng (5):
mm: move some shrinker-related function declarations to mm/internal.h
mm: vmscan: move shrinker-related code into a separate file
mm:
On 2023/8/15 16:36, Muchun Song wrote:
On Aug 7, 2023, at 19:08, Qi Zheng wrote:
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detac
Hi Dave,
On 2023/8/8 10:44, Dave Chinner wrote:
On Mon, Aug 07, 2023 at 07:09:34PM +0800, Qi Zheng wrote:
Like global slab shrink, this commit also uses refcount+RCU method to make
memcg slab shrink lockless.
This patch does random code cleanups amongst the actual RCU changes.
Can you please
Hi Dave,
On 2023/8/8 10:24, Dave Chinner wrote:
On Mon, Aug 07, 2023 at 07:09:33PM +0800, Qi Zheng wrote:
diff --git a/include/linux/shrinker.h b/include/linux/shrinker.h
index eb342994675a..f06225f18531 100644
--- a/include/linux/shrinker.h
+++ b/include/linux/shrinker.h
@@ -4,6 +4,8
Hi Dave,
On 2023/8/8 10:12, Dave Chinner wrote:
On Mon, Aug 07, 2023 at 07:09:32PM +0800, Qi Zheng wrote:
Currently, we maintain two linear arrays per node per memcg, which are
shrinker_info::map and shrinker_info::nr_deferred. And we need to resize
them when the shrinker_nr_max is exceeded
Now there are no readers of shrinker_rwsem, so we can simply replace it
with mutex lock.
Signed-off-by: Qi Zheng
---
drivers/md/dm-cache-metadata.c | 2 +-
fs/super.c | 2 +-
mm/shrinker.c | 28 ++--
mm/shrinker_debug.c
shrinker_rwsem to reparent.
Signed-off-by: Qi Zheng
---
mm/shrinker.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/shrinker.c b/mm/shrinker.c
index fee6f62904fb..a12dede5d21f 100644
--- a/mm/shrinker.c
+++ b/mm/shrinker.c
@@ -299,7 +299,7 @@ void reparent_shrinker_deferred
ink_slab, which is what
we expect.
Signed-off-by: Qi Zheng
---
mm/shrinker.c | 80 ++-
1 file changed, 54 insertions(+), 26 deletions(-)
diff --git a/mm/shrinker.c b/mm/shrinker.c
index d318f5621862..fee6f62904fb 100644
--- a/mm/shrinker.c
+++ b/mm/shrin
0-1-qi.zh...@linux.dev/
[5]. https://lore.kernel.org/lkml/zijhou1d55d4h...@dread.disaster.area/
Signed-off-by: Qi Zheng
---
include/linux/shrinker.h | 17 ++
mm/shrinker.c| 70 +---
2 files changed, 68 insertions(+), 19 deletions(-)
diff --git
we only need to copy this
secondary array every time the size is resized. Then even if we get the
old secondary array under the RCU lock, the found map and nr_deferred are
also true, so no data is lost.
[1].
https://lore.kernel.org/all/20220228122126.37293-13-songmuc...@bytedance.com/
Signed-off
update before freeing memory.
So we introduce a new pool_shrink_rwsem to implement a private
synchronize_shrinkers(), so as to achieve the same purpose.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/gpu/drm/ttm/ttm_pool.c | 15 +++
include/linux/shrinker.h | 2
Now no users are using the old APIs, just remove them.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/shrinker.h | 7 --
mm/shrinker.c| 143 ---
2 files changed, 150 deletions(-)
diff --git a/include/linux/shrinker.h b
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the s_shrink, so that it can be freed asynchronously
using kfree_rcu(). Then it doesn't need to wait for RCU read-side critical
section when releasing the struct super_block.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the mm-zspool shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct zs_pool.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-qm shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct xfs_quotainfo.
Signed-off-b
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-inodegc shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct xfs_mount.
Signed-off-b
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-buf shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct xfs_buftarg.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the nfsd-reply shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct nfsd_net.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the nfsd-client shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct nfsd_net.
Signed-off-b
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the jbd2-journal shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct journal_s.
Signed-off-b
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the ext4-es shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct ext4_sb_info.
Signed-off-b
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the mbcache shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct mb_cache.
Signed-off-by: Qi
ff-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/virtio/virtio_balloon.c | 25 +++--
1 file changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 5b15936a5214..82e6087073a9 100644
--- a/drivers/v
imply exit vmballoon_init() when registering the shrinker
fails. So the shrinker_registered indication is redundant, just remove it.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/misc/vmw_balloon.c | 38 --
1 file changed, 12 insertions(+), 26 dele
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-bcache shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct cache_set.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-raid5 shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct r5conf.
Signed-off-by: Qi
ff-by: Qi Zheng
Reviewed-by: Steven Price
---
drivers/gpu/drm/panfrost/panfrost_device.h| 2 +-
drivers/gpu/drm/panfrost/panfrost_drv.c | 6 +++-
drivers/gpu/drm/panfrost/panfrost_gem.h | 2 +-
.../gpu/drm/panfrost/panfrost_gem_shrinker.c | 30 +++
4 files ch
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-bufio shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct dm_bufio_client.
Signed-off-b
ff-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/md/dm-zoned-metadata.c | 29 +
1 file changed, 17 insertions(+), 12 deletions(-)
diff --git a/drivers/md/dm-zoned-metadata.c b/drivers/md/dm-zoned-metadata.c
index 9d3cca8e3dc9..bbb0e69a7908 100644
--- a/drivers/md/dm-
ff-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/gpu/drm/msm/msm_drv.c | 4 ++-
drivers/gpu/drm/msm/msm_drv.h | 4 +--
drivers/gpu/drm/msm/msm_gem_shrinker.c | 34 --
3 files changed, 26 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/dr
ff-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/gpu/drm/i915/gem/i915_gem_shrinker.c | 30 +++-
drivers/gpu/drm/i915/i915_drv.h | 2 +-
2 files changed, 18 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
b/drivers/gp
Use new APIs to dynamically allocate the mm-shadow shrinker.
Signed-off-by: Qi Zheng
---
mm/workingset.c | 27 ++-
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/mm/workingset.c b/mm/workingset.c
index da58a26d0d4d..3c53138903a7 100644
--- a/mm
Use new APIs to dynamically allocate the sunrpc_cred shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
net/sunrpc/auth.c | 21 +
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 2f16f9d17966
Use new APIs to dynamically allocate the thp-zero and thp-deferred_split
shrinkers.
Signed-off-by: Qi Zheng
---
mm/huge_memory.c | 69 +++-
1 file changed, 45 insertions(+), 24 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index
Use new APIs to dynamically allocate the rcu-kfree shrinker.
Signed-off-by: Qi Zheng
---
kernel/rcu/tree.c | 22 +-
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 7c79480bfaa0..3b20fc46c514 100644
--- a/kernel/rcu
Use new APIs to dynamically allocate the rcu-lazy shrinker.
Signed-off-by: Qi Zheng
---
kernel/rcu/tree_nocb.h | 20 +++-
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index 5598212d1f27..e1c59c33738a 100644
--- a
Use new APIs to dynamically allocate the ubifs-slab shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/ubifs/super.c | 22 --
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index b08fb28d16b5..c690782388a8
Use new APIs to dynamically allocate the dquota-cache shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/quota/dquot.c | 18 ++
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 9e72bfe8bbad..c303cffdf433
Use new APIs to dynamically allocate the nfsd-filecache shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfsd/filecache.c | 23 +--
1 file changed, 13 insertions(+), 10 deletions(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index ee9c923192e0
Use new APIs to dynamically allocate the nfs-acl shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfs/super.c | 22 ++
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 2284f749d892..1b5cd0444dda 100644
Use new APIs to dynamically allocate the nfs-xattr shrinkers.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfs/nfs42xattr.c | 87 +++--
1 file changed, 44 insertions(+), 43 deletions(-)
diff --git a/fs/nfs/nfs42xattr.c b/fs/nfs/nfs42xattr.c
Use new APIs to dynamically allocate the gfs2-qd shrinker.
Signed-off-by: Qi Zheng
---
fs/gfs2/main.c | 6 +++---
fs/gfs2/quota.c | 26 --
fs/gfs2/quota.h | 3 ++-
3 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index
Use new APIs to dynamically allocate the gfs2-glock shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/gfs2/glock.c | 20 +++-
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 1438e7465e30..8d582ba7514f 100644
Use new APIs to dynamically allocate the f2fs-shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/f2fs/super.c | 32
1 file changed, 24 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index aa1f9a3a8037..9092310582aa
Use new APIs to dynamically allocate the erofs-shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/erofs/utils.c | 20 +---
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/fs/erofs/utils.c b/fs/erofs/utils.c
index cc6fb9e98899..6e1a828e6ca3 100644
Use new APIs to dynamically allocate the xen-backend shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/xen/xenbus/xenbus_probe_backend.c | 18 +++---
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c
b
Use new APIs to dynamically allocate the drm-ttm_pool shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/gpu/drm/ttm/ttm_pool.c | 23 +++
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm
Use new APIs to dynamically allocate the android-binder shrinker.
Signed-off-by: Qi Zheng
---
drivers/android/binder_alloc.c | 31 +++
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
Use new APIs to dynamically allocate the x86-mmu shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
arch/x86/kvm/mmu/mmu.c | 18 ++
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 9e4cd8b4a202
modules using the old API and will
no longer work with a kernel using lockless slab shrinkers. They
need to break (both at the source and binary levels) to stop bad
things from happening due to using unconverted shrinkers in the new
setup.
```
Signed-off-by: Qi Zheng
---
include/linux/shrinker.h
The mm/vmscan.c file is too large, so separate the shrinker-related
code from it into a separate file. No functional changes.
Signed-off-by: Qi Zheng
---
mm/Makefile | 4 +-
mm/internal.h | 2 +
mm/shrinker.c | 709 ++
mm/vmscan.c | 701
: Qi Zheng
Reviewed-by: Muchun Song
---
mm/shrinker_debug.c | 16 +---
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/mm/shrinker_debug.c b/mm/shrinker_debug.c
index 3ab53fad8876..61702bdc1af4 100644
--- a/mm/shrinker_debug.c
+++ b/mm/shrinker_debug.c
@@ -49,17 +49,12
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()
Signed-off-by: Qi Zheng
---
include/linux/shrinker.h
d memcg slab shrink needs to
modify the startup sequence (As I mentioned in
https://lore.kernel.org/lkml/38b14080-4ce5-d300-8a0a-c630bca68...@bytedance.com/),
I finally choose to process them separately.)
- collect Acked-bys
Qi Zheng (48):
mm: move some shrinker-related function declar
Hi Simon,
On 2023/7/28 20:17, Simon Horman wrote:
On Thu, Jul 27, 2023 at 04:04:18PM +0800, Qi Zheng wrote:
Currently, the shrinker instances can be divided into the following three
types:
a) global shrinker instance statically defined in the kernel, such as
workingset_shadow_shrinker.
b
Hi Simon,
On 2023/7/28 16:13, Simon Horman wrote:
On Thu, Jul 27, 2023 at 04:04:17PM +0800, Qi Zheng wrote:
The debugfs_remove_recursive() will wait for debugfs_file_put() to return,
so the shrinker will not be freed when doing debugfs operations (such as
shrinker_debugfs_count_show() and
On 2023/7/27 18:20, Damien Le Moal wrote:
On 7/27/23 17:55, Qi Zheng wrote:
goto err;
}
+ zmd->mblk_shrinker->count_objects = dmz_mblock_shrinker_count;
+ zmd->mblk_shrinker->scan_objects = dmz_mblock_shrinker_scan;
+ zmd->mblk_shrinker->see
On 2023/7/27 16:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-qm shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasin
On 2023/7/27 16:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the ext4-es shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasin
On 2023/7/27 16:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-raid5 shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasin
On 2023/7/27 16:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-bufio shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasin
On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the sunrpc_cred shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
net/sunrpc/auth.c | 19 +++
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/net/sunrpc/auth.c b/net
On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the nfsd-filecache shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfsd/filecache.c | 22 --
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/fs/nfsd/filecache.c
On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the nfs-acl shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfs/super.c | 20
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
Hi,
On 2023/7/27 16:30, Damien Le Moal wrote:
On 7/27/23 17:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-zoned-meta shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait fo
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