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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, stable@vger.kernel.org,
	adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org
Subject: [PATCH v2 3/3] ext2, dax: set ext2_dax_aops for dax files
Date: Fri, 14 Sep 2018 08:51:14 -0600	[thread overview]
Message-ID: <20180914145114.11122-4-toshi.kani@hpe.com> (raw)
In-Reply-To: <20180914145114.11122-1-toshi.kani@hpe.com>

Sync syscall to DAX file needs to flush processor cache, but it
currently does not flush to existing DAX files.  This is because
'ext2_da_aops' is set to address_space_operations of existing DAX
files, instead of 'ext2_dax_aops', since S_DAX flag is set after
ext2_set_aops() in the open path.

Similar to ext4, change ext2_iget() to initialize i_flags before

Fixes: fb094c90748f ("ext2, dax: introduce ext2_dax_aops")
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Suggested-by: Jan Kara <jack@suse.cz>
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>
Cc: <stable@vger.kernel.org>
 fs/ext2/inode.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 7f7ee18fe179..e4bb9386c045 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1448,6 +1448,7 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
 	inode->i_blocks = le32_to_cpu(raw_inode->i_blocks);
 	ei->i_flags = le32_to_cpu(raw_inode->i_flags);
+	ext2_set_inode_flags(inode);
 	ei->i_faddr = le32_to_cpu(raw_inode->i_faddr);
 	ei->i_frag_no = raw_inode->i_frag;
 	ei->i_frag_size = raw_inode->i_fsize;
@@ -1517,7 +1518,6 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
 	brelse (bh);
-	ext2_set_inode_flags(inode);
 	return inode;
Linux-nvdimm mailing list

  parent reply	other threads:[~2018-09-14 14:51 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-14 14:51 [PATCH v2 0/3] fix sync to flush processor cache for ext2/4 DAX files Toshi Kani
2018-09-14 14:51 ` [PATCH v2 1/3] ext4, dax: add ext4_bmap to ext4_dax_aops Toshi Kani
2018-09-16  1:32   ` Theodore Y. Ts'o
2018-09-14 14:51 ` [PATCH v2 2/3] ext4, dax: set ext4_dax_aops for dax files Toshi Kani
2018-09-16  1:56   ` Theodore Y. Ts'o
2018-09-14 14:51 ` Toshi Kani [this message]
2018-09-17 16:37   ` [PATCH v2 3/3] ext2, dax: set ext2_dax_aops " Jan Kara

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