Commit b691d98f authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: fix to update largest extent under lock 



In order to avoid racing problem, make largest extent cache being updated
under lock.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 58736fa6

fs/f2fs/inode.c

+7 −4
Original line number Diff line number Diff line
@@ -252,6 +252,7 @@ struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 
int update_inode(struct inode *inode, struct page *node_page)

{

	struct f2fs_inode *ri;

	struct extent_tree *et = F2FS_I(inode)->extent_tree;



	f2fs_inode_synced(inode);
@@ -267,11 +268,13 @@ int update_inode(struct inode *inode, struct page *node_page) 
	ri->i_size = cpu_to_le64(i_size_read(inode));

	ri->i_blocks = cpu_to_le64(inode->i_blocks);



	if (F2FS_I(inode)->extent_tree)

		set_raw_extent(&F2FS_I(inode)->extent_tree->largest,

							&ri->i_ext);

	else

	if (et) {

		read_lock(&et->lock);

		set_raw_extent(&et->largest, &ri->i_ext);

		read_unlock(&et->lock);

	} else {

		memset(&ri->i_ext, 0, sizeof(ri->i_ext));

	}

	set_raw_inline(inode, ri);



	ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);