linux-kernel - [PATCH 3.10 32/46] ext4: convert write_begin methods to stable_page

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Date:	Wed,  3 Jun 2015 20:43:10 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dmitry Monakhov <dmonakhov@...nvz.org>,
	"Theodore Tso" <tytso@....edu>, Jan Kara <jack@...e.cz>,
	Alex Shi <alex.shi@...aro.org>
Subject: [PATCH 3.10 32/46] ext4: convert write_begin methods to stable_page_writes semantics

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dmitry Monakhov <dmonakhov@...nvz.org>

commit 7afe5aa59ed3da7b6161617e7f157c7c680dc41e upstream.

Use wait_for_stable_page() instead of wait_on_page_writeback()

Signed-off-by: Dmitry Monakhov <dmonakhov@...nvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@....edu>
Reviewed-by: Jan Kara <jack@...e.cz>
Cc: Alex Shi <alex.shi@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/ext4/inode.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1032,7 +1032,8 @@ retry_journal:
 		ext4_journal_stop(handle);
 		goto retry_grab;
 	}
-	wait_on_page_writeback(page);
+	/* In case writeback began while the page was unlocked */
+	wait_for_stable_page(page);
 
 	if (ext4_should_dioread_nolock(inode))
 		ret = __block_write_begin(page, pos, len, ext4_get_block_write);
@@ -2729,7 +2730,7 @@ retry_journal:
 		goto retry_grab;
 	}
 	/* In case writeback began while the page was unlocked */
-	wait_on_page_writeback(page);
+	wait_for_stable_page(page);
 
 	ret = __block_write_begin(page, pos, len, ext4_da_get_block_prep);
 	if (ret < 0) {


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