Commit be562198 authored by yangerkun's avatar yangerkun Committed by Baokun Li
Browse files

ext4: avoid recheck extent for EXT4_EX_FORCE_CACHE 

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8UB3F



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

Buffer with verified means that it has been checked before. No need
verify and call set_buffer_verified again.

Signed-off-by: default avataryangerkun <yangerkun@huawei.com>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarBaokun Li <libaokun1@huawei.com>
parent 31fb44c8

fs/ext4/extents.c

+10 −7
Original line number Diff line number Diff line
@@ -568,13 +568,16 @@ __read_extent_tree_block(const char *function, unsigned int line, 
		if (err < 0)

			goto errout;

	}

	if (buffer_verified(bh) && !(flags & EXT4_EX_FORCE_CACHE))

	if (buffer_verified(bh)) {

		if (!(flags & EXT4_EX_FORCE_CACHE))

			return bh;

	} else {

		err = __ext4_ext_check(function, line, inode, ext_block_hdr(bh),

				       depth, pblk, le32_to_cpu(idx->ei_block));

		if (err)

			goto errout;

		set_buffer_verified(bh);

	}

	/*

	 * If this is a leaf block, cache all of its entries

	 */