The quilt patch titled
Subject: xfs: dynamically allocate the xfs-inodegc shrinker
has been removed from the -mm tree. Its filename was
xfs-dynamically-allocate-the-xfs-inodegc-shrinker.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Subject: xfs: dynamically allocate the xfs-inodegc shrinker
Date: Mon, 11 Sep 2023 17:44:34 +0800
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-inodegc 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 xfs_mount.
Link: https://lkml.kernel.org/r/20230911094444.68966-36-zhengqi.arch@xxxxxxxxxxxxx
Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Chandan Babu R <chandan.babu@xxxxxxxxxx>
Cc: "Darrick J. Wong" <djwong@xxxxxxxxxx>
Cc: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Cc: Alasdair Kergon <agk@xxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Alyssa Rosenzweig <alyssa.rosenzweig@xxxxxxxxxxxxx>
Cc: Andreas Dilger <adilger.kernel@xxxxxxxxx>
Cc: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Cc: Anna Schumaker <anna@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Bob Peterson <rpeterso@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Carlos Llamas <cmllamas@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: Chris Mason <clm@xxxxxx>
Cc: Christian Brauner <brauner@xxxxxxxxxx>
Cc: Christian Koenig <christian.koenig@xxxxxxx>
Cc: Chuck Lever <cel@xxxxxxxxxx>
Cc: Coly Li <colyli@xxxxxxx>
Cc: Dai Ngo <Dai.Ngo@xxxxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: David Sterba <dsterba@xxxxxxxx>
Cc: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Cc: Gao Xiang <hsiangkao@xxxxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Huang Rui <ray.huang@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Jason Wang <jasowang@xxxxxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: Jeffle Xu <jefflexu@xxxxxxxxxxxxxxxxx>
Cc: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Josef Bacik <josef@xxxxxxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: Kirill Tkhai <tkhai@xxxxx>
Cc: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Cc: Mike Snitzer <snitzer@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Nadav Amit <namit@xxxxxxxxxx>
Cc: Neil Brown <neilb@xxxxxxx>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
Cc: Olga Kornievskaia <kolga@xxxxxxxxxx>
Cc: Paul E. McKenney <paulmck@xxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Rob Clark <robdclark@xxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Sean Paul <sean@xxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Song Liu <song@xxxxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Steven Price <steven.price@xxxxxxx>
Cc: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
Cc: Tom Talpey <tom@xxxxxxxxxx>
Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>
Cc: Yue Hu <huyue2@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/xfs/xfs_icache.c | 26 +++++++++++++++-----------
fs/xfs/xfs_mount.c | 4 ++--
fs/xfs/xfs_mount.h | 2 +-
3 files changed, 18 insertions(+), 14 deletions(-)
--- a/fs/xfs/xfs_icache.c~xfs-dynamically-allocate-the-xfs-inodegc-shrinker
+++ a/fs/xfs/xfs_icache.c
@@ -2165,8 +2165,7 @@ xfs_inodegc_shrinker_count(
struct shrinker *shrink,
struct shrink_control *sc)
{
- struct xfs_mount *mp = container_of(shrink, struct xfs_mount,
- m_inodegc_shrinker);
+ struct xfs_mount *mp = shrink->private_data;
struct xfs_inodegc *gc;
int cpu;
@@ -2187,8 +2186,7 @@ xfs_inodegc_shrinker_scan(
struct shrinker *shrink,
struct shrink_control *sc)
{
- struct xfs_mount *mp = container_of(shrink, struct xfs_mount,
- m_inodegc_shrinker);
+ struct xfs_mount *mp = shrink->private_data;
struct xfs_inodegc *gc;
int cpu;
bool no_items = true;
@@ -2224,13 +2222,19 @@ int
xfs_inodegc_register_shrinker(
struct xfs_mount *mp)
{
- struct shrinker *shrink = &mp->m_inodegc_shrinker;
+ mp->m_inodegc_shrinker = shrinker_alloc(SHRINKER_NONSLAB,
+ "xfs-inodegc:%s",
+ mp->m_super->s_id);
+ if (!mp->m_inodegc_shrinker)
+ return -ENOMEM;
+
+ mp->m_inodegc_shrinker->count_objects = xfs_inodegc_shrinker_count;
+ mp->m_inodegc_shrinker->scan_objects = xfs_inodegc_shrinker_scan;
+ mp->m_inodegc_shrinker->seeks = 0;
+ mp->m_inodegc_shrinker->batch = XFS_INODEGC_SHRINKER_BATCH;
+ mp->m_inodegc_shrinker->private_data = mp;
- shrink->count_objects = xfs_inodegc_shrinker_count;
- shrink->scan_objects = xfs_inodegc_shrinker_scan;
- shrink->seeks = 0;
- shrink->flags = SHRINKER_NONSLAB;
- shrink->batch = XFS_INODEGC_SHRINKER_BATCH;
+ shrinker_register(mp->m_inodegc_shrinker);
- return register_shrinker(shrink, "xfs-inodegc:%s", mp->m_super->s_id);
+ return 0;
}
--- a/fs/xfs/xfs_mount.c~xfs-dynamically-allocate-the-xfs-inodegc-shrinker
+++ a/fs/xfs/xfs_mount.c
@@ -1021,7 +1021,7 @@ xfs_mountfs(
out_log_dealloc:
xfs_log_mount_cancel(mp);
out_inodegc_shrinker:
- unregister_shrinker(&mp->m_inodegc_shrinker);
+ shrinker_free(mp->m_inodegc_shrinker);
out_fail_wait:
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp)
xfs_buftarg_drain(mp->m_logdev_targp);
@@ -1104,7 +1104,7 @@ xfs_unmountfs(
#if defined(DEBUG)
xfs_errortag_clearall(mp);
#endif
- unregister_shrinker(&mp->m_inodegc_shrinker);
+ shrinker_free(mp->m_inodegc_shrinker);
xfs_free_perag(mp);
xfs_errortag_del(mp);
--- a/fs/xfs/xfs_mount.h~xfs-dynamically-allocate-the-xfs-inodegc-shrinker
+++ a/fs/xfs/xfs_mount.h
@@ -219,7 +219,7 @@ typedef struct xfs_mount {
atomic_t m_agirotor; /* last ag dir inode alloced */
/* Memory shrinker to throttle and reprioritize inodegc */
- struct shrinker m_inodegc_shrinker;
+ struct shrinker *m_inodegc_shrinker;
/*
* Workqueue item so that we can coalesce multiple inode flush attempts
* into a single flush.
_
Patches currently in -mm which might be from zhengqi.arch@xxxxxxxxxxxxx are
