From: Toshi Kani <toshi.kani@hpe.com>
To: jack@suse.cz, dan.j.williams@intel.com
Cc: tytso@mit.edu, linux-nvdimm@lists.01.org,
linux-kernel@vger.kernel.org, adilger.kernel@dilger.ca,
linux-ext4@vger.kernel.org
Subject: [PATCH 2/2] ext4, dax: set ext4_dax_aops for dax files
Date: Tue, 11 Sep 2018 09:42:46 -0600 [thread overview]
Message-ID: <20180911154246.6844-3-toshi.kani@hpe.com> (raw)
In-Reply-To: <20180911154246.6844-1-toshi.kani@hpe.com>
Sync syscall to an existing DAX file needs to flush processor cache,
but it does not currently. This is because 'ext4_da_aops' is set to
address_space_operations of existing DAX files, instead of 'ext4_dax_aops',
since S_DAX flag is set after ext4_set_aops() in the open path.
New file
--------
lookup_open
ext4_create
__ext4_new_inode
ext4_set_inode_flags // Set S_DAX flag
ext4_set_aops // Set aops to ext4_dax_aops
Existing file
-------------
lookup_open
ext4_lookup
ext4_iget
ext4_set_aops // Set aops to ext4_da_aops
ext4_set_inode_flags // Set S_DAX flag
Change ext4_iget() to call ext4_set_inode_flags() before ext4_set_aops().
Fixes: 5f0663bb4a64f588f0a2dd6d1be68d40f9af0086
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
---
fs/ext4/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 775cd9b4af55..93cbbb859c40 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4998,6 +4998,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
if (ret)
goto bad_inode;
+ ext4_set_inode_flags(inode);
+
if (S_ISREG(inode->i_mode)) {
inode->i_op = &ext4_file_inode_operations;
inode->i_fop = &ext4_file_operations;
@@ -5043,7 +5045,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
}
brelse(iloc.bh);
- ext4_set_inode_flags(inode);
unlock_new_inode(inode);
return inode;
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
WARNING: multiple messages have this Message-ID (diff)
From: Toshi Kani <toshi.kani@hpe.com>
To: jack@suse.cz, dan.j.williams@intel.com
Cc: tytso@mit.edu, adilger.kernel@dilger.ca,
linux-ext4@vger.kernel.org, linux-nvdimm@lists.01.org,
linux-kernel@vger.kernel.org, Toshi Kani <toshi.kani@hpe.com>
Subject: [PATCH 2/2] ext4, dax: set ext4_dax_aops for dax files
Date: Tue, 11 Sep 2018 09:42:46 -0600 [thread overview]
Message-ID: <20180911154246.6844-3-toshi.kani@hpe.com> (raw)
In-Reply-To: <20180911154246.6844-1-toshi.kani@hpe.com>
Sync syscall to an existing DAX file needs to flush processor cache,
but it does not currently. This is because 'ext4_da_aops' is set to
address_space_operations of existing DAX files, instead of 'ext4_dax_aops',
since S_DAX flag is set after ext4_set_aops() in the open path.
New file
--------
lookup_open
ext4_create
__ext4_new_inode
ext4_set_inode_flags // Set S_DAX flag
ext4_set_aops // Set aops to ext4_dax_aops
Existing file
-------------
lookup_open
ext4_lookup
ext4_iget
ext4_set_aops // Set aops to ext4_da_aops
ext4_set_inode_flags // Set S_DAX flag
Change ext4_iget() to call ext4_set_inode_flags() before ext4_set_aops().
Fixes: 5f0663bb4a64f588f0a2dd6d1be68d40f9af0086
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
---
fs/ext4/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 775cd9b4af55..93cbbb859c40 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4998,6 +4998,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
if (ret)
goto bad_inode;
+ ext4_set_inode_flags(inode);
+
if (S_ISREG(inode->i_mode)) {
inode->i_op = &ext4_file_inode_operations;
inode->i_fop = &ext4_file_operations;
@@ -5043,7 +5045,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
}
brelse(iloc.bh);
- ext4_set_inode_flags(inode);
unlock_new_inode(inode);
return inode;
WARNING: multiple messages have this Message-ID (diff)
From: Toshi Kani <toshi.kani-ZPxbGqLxI0U@public.gmane.org>
To: jack-AlSwsSmVLrQ@public.gmane.org,
dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org
Cc: tytso-3s7WtUTddSA@public.gmane.org,
linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
adilger.kernel-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org,
linux-ext4-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 2/2] ext4, dax: set ext4_dax_aops for dax files
Date: Tue, 11 Sep 2018 09:42:46 -0600 [thread overview]
Message-ID: <20180911154246.6844-3-toshi.kani@hpe.com> (raw)
In-Reply-To: <20180911154246.6844-1-toshi.kani-ZPxbGqLxI0U@public.gmane.org>
Sync syscall to an existing DAX file needs to flush processor cache,
but it does not currently. This is because 'ext4_da_aops' is set to
address_space_operations of existing DAX files, instead of 'ext4_dax_aops',
since S_DAX flag is set after ext4_set_aops() in the open path.
New file
--------
lookup_open
ext4_create
__ext4_new_inode
ext4_set_inode_flags // Set S_DAX flag
ext4_set_aops // Set aops to ext4_dax_aops
Existing file
-------------
lookup_open
ext4_lookup
ext4_iget
ext4_set_aops // Set aops to ext4_da_aops
ext4_set_inode_flags // Set S_DAX flag
Change ext4_iget() to call ext4_set_inode_flags() before ext4_set_aops().
Fixes: 5f0663bb4a64f588f0a2dd6d1be68d40f9af0086
Signed-off-by: Toshi Kani <toshi.kani-ZPxbGqLxI0U@public.gmane.org>
Cc: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
Cc: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: "Theodore Ts'o" <tytso-3s7WtUTddSA@public.gmane.org>
Cc: Andreas Dilger <adilger.kernel-m1MBpc4rdrD3fQ9qLvQP4Q@public.gmane.org>
---
fs/ext4/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 775cd9b4af55..93cbbb859c40 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4998,6 +4998,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
if (ret)
goto bad_inode;
+ ext4_set_inode_flags(inode);
+
if (S_ISREG(inode->i_mode)) {
inode->i_op = &ext4_file_inode_operations;
inode->i_fop = &ext4_file_operations;
@@ -5043,7 +5045,6 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
goto bad_inode;
}
brelse(iloc.bh);
- ext4_set_inode_flags(inode);
unlock_new_inode(inode);
return inode;
next prev parent reply other threads:[~2018-09-11 16:03 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-11 15:42 [PATCH 0/2] fix sync to flush processor cache for ext4 DAX files Toshi Kani
2018-09-11 15:42 ` Toshi Kani
2018-09-11 15:42 ` Toshi Kani
2018-09-11 15:42 ` [PATCH 1/2] ext4, dax: update dax check to skip journal inode Toshi Kani
2018-09-11 15:42 ` Toshi Kani
2018-09-11 15:42 ` Toshi Kani
2018-09-11 17:59 ` Dan Williams
2018-09-11 17:59 ` Dan Williams
2018-09-11 18:11 ` Kani, Toshi
2018-09-11 18:11 ` Kani, Toshi
2018-09-12 9:24 ` Jan Kara
2018-09-12 9:24 ` Jan Kara
2018-09-12 15:47 ` Kani, Toshi
2018-09-12 15:47 ` Kani, Toshi
2018-09-12 15:47 ` Kani, Toshi
2018-09-12 16:20 ` Jan Kara
2018-09-12 16:20 ` Jan Kara
2018-09-12 16:52 ` Kani, Toshi
2018-09-12 16:52 ` Kani, Toshi
2018-09-12 16:52 ` Kani, Toshi
2018-09-11 15:42 ` Toshi Kani [this message]
2018-09-11 15:42 ` [PATCH 2/2] ext4, dax: set ext4_dax_aops for dax files Toshi Kani
2018-09-11 15:42 ` Toshi Kani
2018-09-11 18:15 ` Dan Williams
2018-09-11 18:15 ` Dan Williams
2018-09-11 18:15 ` Dan Williams
2018-09-11 18:41 ` Kani, Toshi
2018-09-11 18:41 ` Kani, Toshi
2018-09-11 18:41 ` Kani, Toshi
2018-09-12 9:31 ` Jan Kara
2018-09-12 9:31 ` Jan Kara
2018-09-12 9:31 ` Jan Kara
2018-09-12 16:08 ` Kani, Toshi
2018-09-12 16:08 ` Kani, Toshi
2018-09-12 16:08 ` Kani, Toshi
2018-09-12 16:41 ` Dan Williams
2018-09-12 16:41 ` Dan Williams
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=20180911154246.6844-3-toshi.kani@hpe.com \
--to=toshi.kani@hpe.com \
--cc=adilger.kernel@dilger.ca \
--cc=dan.j.williams@intel.com \
--cc=jack@suse.cz \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-nvdimm@lists.01.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.