From: ira.weiny@intel.com
To: linux-kernel@vger.kernel.org,
"Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Ira Weiny <ira.weiny@intel.com>, Jan Kara <jack@suse.cz>,
Dan Williams <dan.j.williams@intel.com>,
Dave Chinner <david@fromorbit.com>,
Christoph Hellwig <hch@lst.de>,
"Theodore Y. Ts'o" <tytso@mit.edu>,
Jeff Moyer <jmoyer@redhat.com>,
linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org,
linux-fsdevel@vger.kernel.org
Subject: [PATCH V8 08/11] fs: Define I_DONTCACNE in VFS layer
Date: Tue, 14 Apr 2020 23:45:20 -0700 [thread overview]
Message-ID: <20200415064523.2244712-9-ira.weiny@intel.com> (raw)
In-Reply-To: <20200415064523.2244712-1-ira.weiny@intel.com>
From: Ira Weiny <ira.weiny@intel.com>
DAX effective mode changes (setting of S_DAX) require inode eviction.
Define a flag which can be set to inform the VFS layer that inodes
should not be cached. This will expedite the eviction of those nodes
requiring reload.
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
include/linux/fs.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index a818ced22961..e2db71d150c3 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2151,6 +2151,8 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
*
* I_CREATING New object's inode in the middle of setting up.
*
+ * I_DONTCACHE Do not cache the inode
+ *
* Q: What is the difference between I_WILL_FREE and I_FREEING?
*/
#define I_DIRTY_SYNC (1 << 0)
@@ -2173,6 +2175,7 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
#define I_WB_SWITCH (1 << 13)
#define I_OVL_INUSE (1 << 14)
#define I_CREATING (1 << 15)
+#define I_DONTCACHE (1 << 16)
#define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
#define I_DIRTY (I_DIRTY_INODE | I_DIRTY_PAGES)
@@ -3042,7 +3045,8 @@ extern int inode_needs_sync(struct inode *inode);
extern int generic_delete_inode(struct inode *inode);
static inline int generic_drop_inode(struct inode *inode)
{
- return !inode->i_nlink || inode_unhashed(inode);
+ return !inode->i_nlink || inode_unhashed(inode) ||
+ (inode->i_state & I_DONTCACHE);
}
extern struct inode *ilookup5_nowait(struct super_block *sb,
--
2.25.1
next prev parent reply other threads:[~2020-04-15 6:47 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 6:45 [PATCH V8 00/11] Enable per-file/per-directory DAX operations V8 ira.weiny
2020-04-15 6:45 ` [PATCH V8 01/11] fs/xfs: Remove unnecessary initialization of i_rwsem ira.weiny
2020-04-15 15:12 ` Darrick J. Wong
2020-04-15 6:45 ` [PATCH V8 02/11] fs: Remove unneeded IS_DAX() check in io_is_direct() ira.weiny
2020-04-15 6:45 ` [PATCH V8 03/11] fs/stat: Define DAX statx attribute ira.weiny
2020-04-15 6:45 ` [PATCH V8 04/11] fs/xfs: Change XFS_MOUNT_DAX to XFS_MOUNT_DAX_ALWAYS ira.weiny
2020-04-15 15:11 ` Darrick J. Wong
2020-04-20 2:15 ` Dave Chinner
2020-04-20 17:50 ` Ira Weiny
2020-04-15 6:45 ` [PATCH V8 05/11] fs/xfs: Make DAX mount option a tri-state ira.weiny
2020-04-15 15:16 ` Darrick J. Wong
2020-04-16 4:15 ` Ira Weiny
2020-04-15 6:45 ` [PATCH V8 06/11] fs/xfs: Create function xfs_inode_enable_dax() ira.weiny
2020-04-15 15:17 ` Darrick J. Wong
2020-04-15 6:45 ` [PATCH V8 07/11] fs/xfs: Combine xfs_diflags_to_linux() and xfs_diflags_to_iflags() ira.weiny
2020-04-15 6:45 ` ira.weiny [this message]
2020-04-15 8:52 ` [PATCH V8 08/11] fs: Define I_DONTCACNE in VFS layer Jan Kara
2020-04-15 15:18 ` Darrick J. Wong
2020-04-16 4:28 ` Ira Weiny
2020-04-16 4:28 ` Ira Weiny
2020-04-15 6:45 ` [PATCH V8 09/11] fs: Introduce DCACHE_DONTCACHE ira.weiny
2020-04-15 9:01 ` Jan Kara
2020-04-16 4:55 ` Ira Weiny
2020-04-15 6:45 ` [PATCH V8 10/11] fs/xfs: Change xfs_ioctl_setattr_dax_invalidate() ira.weiny
2020-04-15 15:21 ` Darrick J. Wong
2020-04-16 5:00 ` Ira Weiny
2020-04-20 2:31 ` Dave Chinner
2020-04-20 18:36 ` Ira Weiny
2020-04-21 0:19 ` Dave Chinner
2020-04-15 6:45 ` [PATCH V8 11/11] Documentation/dax: Update Usage section ira.weiny
2020-04-15 15:29 ` Darrick J. Wong
2020-04-16 5:36 ` Ira Weiny
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200415064523.2244712-9-ira.weiny@intel.com \
--to=ira.weiny@intel.com \
--cc=dan.j.williams@intel.com \
--cc=darrick.wong@oracle.com \
--cc=david@fromorbit.com \
--cc=hch@lst.de \
--cc=jack@suse.cz \
--cc=jmoyer@redhat.com \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-xfs@vger.kernel.org \
--cc=tytso@mit.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).