在 2023/2/21 5:25, Dave Chinner 写道:
On Fri, Feb 17, 2023 at 02:48:31PM +0000, Shiyang Ruan wrote:
xfs_notify_failure.c requires a method to invalidate all dax mappings.
drop_pagecache_sb() can do this but it is a static function and only
build with CONFIG_SYSCTL. Now, move its implementation into super.c and
call it super_drop_pagecache(). Use its second argument as invalidator
so that we can choose which invalidate method to use.
Signed-off-by: Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx>
I got no repsonse last time, so I'll just post a link to the
concerns I stated about this:
https://lore.kernel.org/linux-xfs/20230205215000.GT360264@xxxxxxxxxxxxxxxxxxx/
Please see patch 3. I changed the code: freeze the fs, then drop its
caches.
--
Thanks,
Ruan.
-Dave.
