From: Chao Yu <chao2.yu@samsung.com>
Date: Wed, 8 Jul 2015 10:24:38 +0000 (+0800)
Subject: f2fs: fix to update page flag
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=90d4388ac2cec0c83cad7315d3cd0065553430e1;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

f2fs: fix to update page flag

This patch fixes to update page flag (e.g. Uptodate/cold flag) in
->write_begin.

Otherwise, page will be non-uptodate when we try to write entire
page, and cold data flag in page will not be clean when gced page
is being rewritten.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index c9d0f8b06d15..de55c088948f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1790,8 +1790,10 @@ put_next:
 	f2fs_put_dnode(&dn);
 	f2fs_unlock_op(sbi);
 
-	if ((len == PAGE_CACHE_SIZE) || PageUptodate(page))
-		return 0;
+	if (len == PAGE_CACHE_SIZE)
+		goto out_update;
+	if (PageUptodate(page))
+		goto out_clear;
 
 	f2fs_wait_on_page_writeback(page, DATA);
 
@@ -1801,7 +1803,7 @@ put_next:
 
 		/* Reading beyond i_size is simple: memset to zero */
 		zero_user_segments(page, 0, start, end, PAGE_CACHE_SIZE);
-		goto out;
+		goto out_update;
 	}
 
 	if (dn.data_blkaddr == NEW_ADDR) {
@@ -1839,8 +1841,9 @@ put_next:
 			}
 		}
 	}
-out:
+out_update:
 	SetPageUptodate(page);
+out_clear:
 	clear_cold_data(page);
 	return 0;