From: Qi Zheng <zhengqi.arch@bytedance.com>
To: akpm@linux-foundation.org, david@fromorbit.com, tkhai@ya.ru,
vbabka@suse.cz, roman.gushchin@linux.dev, djwong@kernel.org,
brauner@kernel.org, paulmck@kernel.org, tytso@mit.edu,
steven.price@arm.com, cel@kernel.org, senozhatsky@chromium.org,
yujie.liu@intel.com, gregkh@linuxfoundation.org,
muchun.song@linux.dev
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org,
kvm@vger.kernel.org, xen-devel@lists.xenproject.org,
linux-erofs@lists.ozlabs.org,
linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com,
linux-nfs@vger.kernel.org, linux-mtd@lists.infradead.org,
rcu@vger.kernel.org, netdev@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
dm-devel@redhat.com, linux-raid@vger.kernel.org,
linux-bcache@vger.kernel.org,
virtualization@lists.linux-foundation.org,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org,
Muchun Song <songmuchun@bytedance.com>
Subject: Re: [PATCH v3 40/49] xfs: dynamically allocate the xfs-qm shrinker
Date: Thu, 27 Jul 2023 17:19:49 +0800 [thread overview]
Message-ID: <5f1b85b8-3655-1700-4d16-fa056b31ceeb@bytedance.com> (raw)
In-Reply-To: <20230727080502.77895-41-zhengqi.arch@bytedance.com>
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 releasing the struct xfs_quotainfo.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
> Reviewed-by: Muchun Song <songmuchun@bytedance.com>
> ---
> fs/xfs/xfs_qm.c | 26 +++++++++++++-------------
> fs/xfs/xfs_qm.h | 2 +-
> 2 files changed, 14 insertions(+), 14 deletions(-)
>
> diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
> index 6abcc34fafd8..032f0a208bd2 100644
> --- a/fs/xfs/xfs_qm.c
> +++ b/fs/xfs/xfs_qm.c
> @@ -504,8 +504,7 @@ xfs_qm_shrink_scan(
> struct shrinker *shrink,
> struct shrink_control *sc)
> {
> - struct xfs_quotainfo *qi = container_of(shrink,
> - struct xfs_quotainfo, qi_shrinker);
> + struct xfs_quotainfo *qi = shrink->private_data;
> struct xfs_qm_isolate isol;
> unsigned long freed;
> int error;
> @@ -539,8 +538,7 @@ xfs_qm_shrink_count(
> struct shrinker *shrink,
> struct shrink_control *sc)
> {
> - struct xfs_quotainfo *qi = container_of(shrink,
> - struct xfs_quotainfo, qi_shrinker);
> + struct xfs_quotainfo *qi = shrink->private_data;
>
> return list_lru_shrink_count(&qi->qi_lru, sc);
> }
> @@ -680,16 +678,18 @@ xfs_qm_init_quotainfo(
> if (XFS_IS_PQUOTA_ON(mp))
> xfs_qm_set_defquota(mp, XFS_DQTYPE_PROJ, qinf);
>
> - qinf->qi_shrinker.count_objects = xfs_qm_shrink_count;
> - qinf->qi_shrinker.scan_objects = xfs_qm_shrink_scan;
> - qinf->qi_shrinker.seeks = DEFAULT_SEEKS;
> - qinf->qi_shrinker.flags = SHRINKER_NUMA_AWARE;
> -
> - error = register_shrinker(&qinf->qi_shrinker, "xfs-qm:%s",
> - mp->m_super->s_id);
> - if (error)
> + qinf->qi_shrinker = shrinker_alloc(SHRINKER_NUMA_AWARE, "xfs-qm:%s",
> + mp->m_super->s_id);
> + if (!qinf->qi_shrinker)
Here should set error to -ENOMEM, will fix.
> goto out_free_inos;
>
> + qinf->qi_shrinker->count_objects = xfs_qm_shrink_count;
> + qinf->qi_shrinker->scan_objects = xfs_qm_shrink_scan;
> + qinf->qi_shrinker->seeks = DEFAULT_SEEKS;
> + qinf->qi_shrinker->private_data = qinf;
> +
> + shrinker_register(qinf->qi_shrinker);
> +
> return 0;
>
> out_free_inos:
> @@ -718,7 +718,7 @@ xfs_qm_destroy_quotainfo(
> qi = mp->m_quotainfo;
> ASSERT(qi != NULL);
>
> - unregister_shrinker(&qi->qi_shrinker);
> + shrinker_free(qi->qi_shrinker);
> list_lru_destroy(&qi->qi_lru);
> xfs_qm_destroy_quotainos(qi);
> mutex_destroy(&qi->qi_tree_lock);
> diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
> index 9683f0457d19..d5c9fc4ba591 100644
> --- a/fs/xfs/xfs_qm.h
> +++ b/fs/xfs/xfs_qm.h
> @@ -63,7 +63,7 @@ struct xfs_quotainfo {
> struct xfs_def_quota qi_usr_default;
> struct xfs_def_quota qi_grp_default;
> struct xfs_def_quota qi_prj_default;
> - struct shrinker qi_shrinker;
> + struct shrinker *qi_shrinker;
>
> /* Minimum and maximum quota expiration timestamp values. */
> time64_t qi_expiry_min;
next prev parent reply other threads:[~2023-07-27 9:30 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-27 8:04 [PATCH v3 00/49] use refcount+RCU method to implement lockless slab shrink Qi Zheng
2023-07-27 8:04 ` [PATCH v3 01/49] binder: fix memory leak in binder_init() Qi Zheng
2023-07-27 8:04 ` [PATCH v3 02/49] mm: move some shrinker-related function declarations to mm/internal.h Qi Zheng
2023-07-27 8:04 ` [PATCH v3 03/49] mm: vmscan: move shrinker-related code into a separate file Qi Zheng
2023-07-27 8:04 ` [PATCH v3 04/49] mm: shrinker: remove redundant shrinker_rwsem in debugfs operations Qi Zheng
2023-07-28 8:13 ` Simon Horman
2023-07-28 8:19 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 05/49] mm: shrinker: add infrastructure for dynamically allocating shrinker Qi Zheng
2023-07-28 12:17 ` Simon Horman
2023-07-29 8:47 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 06/49] kvm: mmu: dynamically allocate the x86-mmu shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 07/49] binder: dynamically allocate the android-binder shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 08/49] drm/ttm: dynamically allocate the drm-ttm_pool shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 09/49] xenbus/backend: dynamically allocate the xen-backend shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 10/49] erofs: dynamically allocate the erofs-shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 11/49] f2fs: dynamically allocate the f2fs-shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 12/49] gfs2: dynamically allocate the gfs2-glock shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 13/49] gfs2: dynamically allocate the gfs2-qd shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 14/49] NFSv4.2: dynamically allocate the nfs-xattr shrinkers Qi Zheng
2023-07-27 8:04 ` [PATCH v3 15/49] nfs: dynamically allocate the nfs-acl shrinker Qi Zheng
2023-07-27 9:06 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 16/49] nfsd: dynamically allocate the nfsd-filecache shrinker Qi Zheng
2023-07-27 9:08 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 17/49] quota: dynamically allocate the dquota-cache shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 18/49] ubifs: dynamically allocate the ubifs-slab shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 19/49] rcu: dynamically allocate the rcu-lazy shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 20/49] rcu: dynamically allocate the rcu-kfree shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 21/49] mm: thp: dynamically allocate the thp-related shrinkers Qi Zheng
2023-07-27 8:04 ` [PATCH v3 22/49] sunrpc: dynamically allocate the sunrpc_cred shrinker Qi Zheng
2023-07-27 9:10 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 23/49] mm: workingset: dynamically allocate the mm-shadow shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 24/49] drm/i915: dynamically allocate the i915_gem_mm shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 25/49] drm/msm: dynamically allocate the drm-msm_gem shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 26/49] drm/panfrost: dynamically allocate the drm-panfrost shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 27/49] dm: dynamically allocate the dm-bufio shrinker Qi Zheng
2023-07-27 9:13 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 28/49] dm zoned: dynamically allocate the dm-zoned-meta shrinker Qi Zheng
2023-07-27 8:30 ` Damien Le Moal
2023-07-27 8:55 ` Qi Zheng
2023-07-27 10:20 ` Damien Le Moal
2023-07-27 10:32 ` Qi Zheng
2023-07-27 22:59 ` Dave Chinner
2023-07-27 23:48 ` Damien Le Moal
2023-07-27 8:04 ` [PATCH v3 29/49] md/raid5: dynamically allocate the md-raid5 shrinker Qi Zheng
2023-07-27 9:15 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 30/49] bcache: dynamically allocate the md-bcache shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 31/49] vmw_balloon: dynamically allocate the vmw-balloon shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 32/49] virtio_balloon: dynamically allocate the virtio-balloon shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 33/49] mbcache: dynamically allocate the mbcache shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 34/49] ext4: dynamically allocate the ext4-es shrinker Qi Zheng
2023-07-27 9:17 ` Qi Zheng
2023-07-27 8:04 ` [PATCH v3 35/49] jbd2,ext4: dynamically allocate the jbd2-journal shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 36/49] nfsd: dynamically allocate the nfsd-client shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 37/49] nfsd: dynamically allocate the nfsd-reply shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 38/49] xfs: dynamically allocate the xfs-buf shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 39/49] xfs: dynamically allocate the xfs-inodegc shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 40/49] xfs: dynamically allocate the xfs-qm shrinker Qi Zheng
2023-07-27 9:19 ` Qi Zheng [this message]
2023-07-27 8:04 ` [PATCH v3 41/49] zsmalloc: dynamically allocate the mm-zspool shrinker Qi Zheng
2023-07-27 8:04 ` [PATCH v3 42/49] fs: super: dynamically allocate the s_shrink Qi Zheng
2023-07-27 8:04 ` [PATCH v3 43/49] mm: shrinker: remove old APIs Qi Zheng
2023-07-27 8:04 ` [PATCH v3 44/49] drm/ttm: introduce pool_shrink_rwsem Qi Zheng
2023-07-27 8:04 ` [PATCH v3 45/49] mm: shrinker: add a secondary array for shrinker_info::{map, nr_deferred} Qi Zheng
2023-07-27 8:04 ` [PATCH v3 46/49] mm: shrinker: make global slab shrink lockless Qi Zheng
2023-07-27 8:05 ` [PATCH v3 47/49] mm: shrinker: make memcg " Qi Zheng
2023-07-27 8:05 ` [PATCH v3 48/49] mm: shrinker: hold write lock to reparent shrinker nr_deferred Qi Zheng
2023-07-27 8:05 ` [PATCH v3 49/49] mm: shrinker: convert shrinker_rwsem to mutex Qi Zheng
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