If DCACHE_REFERENCED is set, fast_dput() will return true, and then
retain_dentry() have no chance to check DCACHE_DONTCACHE. As a result,
the dentry won't be killed and the corresponding inode can't be evicted.
In the following example, the DAX policy can't take effects unless we
do a drop_caches
If DCACHE_REFERENCED is set, fast_dput() will return true, and then
retain_dentry() have no chance to check DCACHE_DONTCACHE. As a result,
the dentry won't be killed and the corresponding inode can't be evicted.
In the following example, the DAX policy can't take effects unless we
do a drop_caches
On 2020/8/31 8:34, Dave Chinner wrote:
> On Fri, Aug 28, 2020 at 05:04:14PM +0800, Li, Hao wrote:
> > On 2020/8/28 8:35, Dave Chinner wrote:
> > > On Thu, Aug 27, 2020 at 05:58:07PM +0800, Li, Hao wrote:
> > > > On 2020/8/27 14:37, Dave Chinner wrote:
> > > > > On Fri, Aug 21, 2020 at 09:59:53AM +0
On Fri, Aug 28, 2020 at 05:04:14PM +0800, Li, Hao wrote:
> On 2020/8/28 8:35, Dave Chinner wrote:
> > On Thu, Aug 27, 2020 at 05:58:07PM +0800, Li, Hao wrote:
> >> On 2020/8/27 14:37, Dave Chinner wrote:
> >>> On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
> Currently, DCACHE_REFERENC
On 2020/8/28 8:35, Dave Chinner wrote:
> On Thu, Aug 27, 2020 at 05:58:07PM +0800, Li, Hao wrote:
>> On 2020/8/27 14:37, Dave Chinner wrote:
>>> On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
set from being ki
On Thu, Aug 27, 2020 at 05:58:07PM +0800, Li, Hao wrote:
> On 2020/8/27 14:37, Dave Chinner wrote:
> > On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
> >> Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
> >> set from being killed, so the corresponding inode can't be
On 2020/8/27 14:37, Dave Chinner wrote:
> On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
>> Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
>> set from being killed, so the corresponding inode can't be evicted. If
>> the DAX policy of an inode is changed, we can't ma
On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
> Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
> set from being killed, so the corresponding inode can't be evicted. If
> the DAX policy of an inode is changed, we can't make policy changing
> take effects unless drop
Hello,
CC to Dave, darrick.wong and xfs/nvdimm list to get more discussions.
Thanks.
Hao Li
On 2020/8/24 14:17, Li, Hao wrote:
> On 2020/8/23 14:54, Ira Weiny wrote:
>> On Fri, Aug 21, 2020 at 10:40:41AM -0700, 'Ira Weiny' wrote:
>>> On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
C
On 2020/8/23 14:54, Ira Weiny wrote:
> On Fri, Aug 21, 2020 at 10:40:41AM -0700, 'Ira Weiny' wrote:
>> On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
>>> Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
>>> set from being killed, so the corresponding inode can't be ev
On Fri, Aug 21, 2020 at 10:40:41AM -0700, 'Ira Weiny' wrote:
> On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
> > Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
> > set from being killed, so the corresponding inode can't be evicted. If
> > the DAX policy of an inode
On Fri, Aug 21, 2020 at 09:59:53AM +0800, Hao Li wrote:
> Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
> set from being killed, so the corresponding inode can't be evicted. If
> the DAX policy of an inode is changed, we can't make policy changing
> take effects unless drop
Currently, DCACHE_REFERENCED prevents the dentry with DCACHE_DONTCACHE
set from being killed, so the corresponding inode can't be evicted. If
the DAX policy of an inode is changed, we can't make policy changing
take effects unless dropping caches manually.
This patch fixes this problem and flushes
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