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/nfs/symlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs/symlink.c') diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c index b6de433da5db..abd93bf015d6 100644 --- a/fs/nfs/symlink.c +++ b/fs/nfs/symlink.c @@ -56,7 +56,7 @@ static const char *nfs_follow_link(struct dentry *dentry, void **cookie) if (IS_ERR(page)) return ERR_CAST(page); *cookie = page; - return kmap(page); + return page_address(page); } /* -- cgit v1.2.3