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From: Dmitry Monakhov <dmonakhov@openvz.org>
To: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: "linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"J. Bruce Fields" <bfields@fieldses.org>,
	Theodore Ts'o <tytso@mit.edu>,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Andreas Dilger <adilger.kernel@dilger.ca>,
	Dave Chinner <david@fromorbit.com>,
	Ingo Molnar <mingo@redhat.com>, Jan Kara <jack@suse.com>,
	Jeff Layton <jlayton@poochiereds.net>,
	Matthew Wilcox <willy@linux.intel.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-ext4 <linux-ext4@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Linux MM <linux-mm@kvack.org>,
	"linux-nvdimm\@lists.01.org" <linux-nvdimm@lists.01.org>,
	X86 ML <x86@kernel.org>, XFS Developers <xfs@oss.sgi.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Matthew Wilcox <matthew.r.wilcox@intel.com>,
	Dave Hansen <dave.hansen@linux.intel.com>
Subject: [PATCH] dax: dirty inode only if required
Date: Thu, 04 Feb 2016 17:02:02 +0300
Message-ID: <87k2mkr2ud.fsf@openvz.org> (raw)
In-Reply-To: 1450899560-26708-5-git-send-email-ross.zwisler@linux.intel.com


Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
---
 fs/dax.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/dax.c b/fs/dax.c
index e0e9358..fc2e314 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -358,7 +358,8 @@ static int dax_radix_entry(struct address_space *mapping, pgoff_t index,
 	void *entry;
 
 	WARN_ON_ONCE(pmd_entry && !dirty);
-	__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
+	if (dirty)
+		__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
 
 	spin_lock_irq(&mapping->tree_lock);
 
-- 
1.8.3.1

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Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-04 14:02 Dmitry Monakhov [this message]
2016-02-04 14:33 ` Jan Kara
2016-02-04 15:50   ` Ross Zwisler

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