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authorAl Viro <viro@zeniv.linux.org.uk>2015-11-17 01:07:57 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2015-12-08 22:41:36 -0500
commit21fc61c73c3903c4c312d0802da01ec2b323d174 (patch)
treea26c29e3fbb766f00b023724e9e5b8b9bba9b879 /fs/cramfs
parentaa80deab33a8fb180e718f5e45514db19aade165 (diff)
downloadlinux-21fc61c73c3903c4c312d0802da01ec2b323d174.tar.bz2
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 <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/cramfs')
-rw-r--r--fs/cramfs/inode.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index 355c522f3585..b862bc219cd7 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -100,6 +100,7 @@ static struct inode *get_cramfs_inode(struct super_block *sb,
break;
case S_IFLNK:
inode->i_op = &page_symlink_inode_operations;
+ inode_nohighmem(inode);
inode->i_data.a_ops = &cramfs_aops;
break;
default: