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 move the cleanups to a spearate patch to reduce
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 @@
>
> #include
> #include
> +#include
>
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, that is, allocate a new array,
> and then copy
On Mon, Aug 07, 2023 at 07:09:33PM +0800, Qi Zheng wrote:
> The shrinker_rwsem is a global read-write lock in shrinkers subsystem,
> which protects most operations such as slab shrink, registration and
> unregistration of shrinkers, etc. This can easily cause problems in the
> following cases.
On Thu, Jul 27, 2023 at 07:20:46PM +0900, 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;
> >>> +
On Wed, Jul 26, 2023 at 05:14:09PM +0800, Qi Zheng wrote:
> On 2023/7/26 16:08, Dave Chinner wrote:
> > On Mon, Jul 24, 2023 at 05:43:51PM +0800, Qi Zheng wrote:
> > > @@ -122,6 +126,13 @@ void shrinker_free_non_registered(struct shrinker
> > > *shrinker);
> > > void shrinker_register(struct
On Mon, Jul 24, 2023 at 05:43:51PM +0800, Qi Zheng wrote:
> The shrinker_rwsem is a global read-write lock in shrinkers subsystem,
> which protects most operations such as slab shrink, registration and
> unregistration of shrinkers, etc. This can easily cause problems in the
> following cases.
>
On Mon, Jul 24, 2023 at 05:43:10PM +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) global shrinker instance statically
On Thu, Jul 13, 2023 at 07:00:55PM -0400, Jeff Layton wrote:
> Enable multigrain timestamps, which should ensure that there is an
> apparent change to the timestamp whenever it has been written after
> being actively observed via getattr.
>
> Also, anytime the mtime changes, the ctime must also
On Tue, Apr 11, 2023 at 07:33:19PM -0700, Eric Biggers wrote:
> On Mon, Apr 10, 2023 at 10:19:46PM -0700, Christoph Hellwig wrote:
> > Dave is going to hate me for this, but..
> >
> > I've been looking over some of the interfaces here, and I'm starting
> > to very seriously questioning the design
On Wed, Apr 05, 2023 at 10:54:06PM +, Eric Biggers wrote:
> On Thu, Apr 06, 2023 at 08:26:46AM +1000, Dave Chinner wrote:
> > > We could certainly think about moving to a design where fs/verity/ asks
> > > the
> > > filesystem to just *read* a Merkle tree block, without adding it to a
> > >
On Wed, Apr 05, 2023 at 05:12:34PM +0200, Andrey Albershteyn wrote:
> Hi Eric,
>
> On Tue, Apr 04, 2023 at 04:32:24PM -0700, Eric Biggers wrote:
> > Hi Andrey,
> >
> > On Tue, Apr 04, 2023 at 04:53:17PM +0200, Andrey Albershteyn wrote:
> > > In case of different Merkle tree block size fs-verity
On Wed, Apr 05, 2023 at 06:16:00PM +, Eric Biggers wrote:
> On Wed, Apr 05, 2023 at 09:38:47AM -0700, Darrick J. Wong wrote:
> > > The merkle tree pages are dropped after verification. When page is
> > > dropped xfs_buf is marked as verified. If fs-verity wants to
> > > verify again it will
On Wed, Apr 05, 2023 at 06:02:47PM +, Eric Biggers wrote:
> And I really hope that you don't want to do DIO to the *Merkle tree*, as that
Not for XFS - the merkle tree is not held as file data.
That said, the merkle tree in XFS is not page cache or block aligned
metadata either, so we really
On Wed, Apr 05, 2023 at 08:09:27AM -0700, Darrick J. Wong wrote:
> On Wed, Apr 05, 2023 at 05:01:42PM +0200, Andrey Albershteyn wrote:
> > On Tue, Apr 04, 2023 at 09:10:47AM -0700, Darrick J. Wong wrote:
> > > On Tue, Apr 04, 2023 at 04:53:15PM +0200, Andrey Albershteyn wrote:
> > > > The direct
On Tue, Apr 04, 2023 at 03:41:23PM -0700, Eric Biggers wrote:
> Hi Andrey,
>
> On Tue, Apr 04, 2023 at 04:53:12PM +0200, Andrey Albershteyn wrote:
> > Add flag to mark inodes which have fs-verity enabled on them (i.e.
> > descriptor exist and tree is built).
> >
> > Signed-off-by: Andrey
On Tue, Apr 04, 2023 at 04:53:02PM +0200, Andrey Albershteyn wrote:
> Allow filesystem to make additional processing on verified pages
> instead of just dropping a reference. This will be used by XFS for
> internal buffer cache manipulation in further patches. The btrfs,
> ext4, and f2fs just drop
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