From 4f9d956d1939f97e2cb278b9615b6c683cd90e97 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 24 Aug 2017 11:52:21 -0400
Subject: [PATCH] ext4: do not unnecessarily allocate buffer in
 recently_deleted()
Git-commit: 4f9d956d1939f97e2cb278b9615b6c683cd90e97
Patch-mainline: v4.14-rc1
References: bsc#1080989

In recently_deleted() function we want to check whether inode is still
cached in buffer cache. Use sb_find_get_block() for that instead of
sb_getblk() to avoid unnecessary allocation of bdev page and buffer
heads.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jan Kara <jack@suse.cz>

---
 fs/ext4/ialloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 507bfb3344d4..0d03e73dccaf 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -707,9 +707,9 @@ static int recently_deleted(struct super_block *sb, ext4_group_t group, int ino)
 	if (unlikely(!gdp))
 		return 0;
 
-	bh = sb_getblk(sb, ext4_inode_table(sb, gdp) +
+	bh = sb_find_get_block(sb, ext4_inode_table(sb, gdp) +
 		       (ino / inodes_per_block));
-	if (unlikely(!bh) || !buffer_uptodate(bh))
+	if (!bh || !buffer_uptodate(bh))
 		/*
 		 * If the block is not in the buffer cache, then it
 		 * must have been written out.
-- 
2.13.6