From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Tue, 6 Sep 2016 22:55:54 +0000 (-0700)
Subject: f2fs: avoid page allocation for truncating partial inline_data
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=6438097bd16f607c7babbb54159753d0e8b94d75;p=deliverable%2Flinux.git

f2fs: avoid page allocation for truncating partial inline_data

When truncating cached inline_data, we don't need to allocate a new page
all the time. Instead, it must check its page cache only.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index b74e985213f4..3b62949dfb07 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -523,7 +523,7 @@ static int truncate_partial_data_page(struct inode *inode, u64 from,
 		return 0;
 
 	if (cache_only) {
-		page = f2fs_grab_cache_page(mapping, index, false);
+		page = find_lock_page(mapping, index);
 		if (page && PageUptodate(page))
 			goto truncate_out;
 		f2fs_put_page(page, 1);