From 21fc61c73c3903c4c312d0802da01ec2b323d174 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 17 Nov 2015 01:07:57 -0500 Subject: don't put symlink bodies in pagecache into highmem kmap() in page_follow_link_light() needed to go - allowing to hold an arbitrary number of kmaps for long is a great way to deadlocking the system. new helper (inode_nohighmem(inode)) needs to be used for pagecache symlinks inodes; done for all in-tree cases. page_follow_link_light() instrumented to yell about anything missed. Signed-off-by: Al Viro --- fs/logfs/dir.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/logfs/dir.c') diff --git a/fs/logfs/dir.c b/fs/logfs/dir.c index 99944a406a29..542468e9bfb4 100644 --- a/fs/logfs/dir.c +++ b/fs/logfs/dir.c @@ -529,6 +529,7 @@ static int logfs_symlink(struct inode *dir, struct dentry *dentry, return PTR_ERR(inode); inode->i_op = &page_symlink_inode_operations; + inode_nohighmem(inode); inode->i_mapping->a_ops = &logfs_reg_aops; return __logfs_create(dir, dentry, inode, target, destlen); -- cgit v1.2.3