tree 826e424c86cd079b845ad497bd8c9867b490524f
parent 60b7eca1dc2ec066916b3b7ac6ad89bea13cb9af
author Al Viro <viro@zeniv.linux.org.uk> 1452811979 -0500
committer Al Viro <viro@zeniv.linux.org.uk> 1452812214 -0500

Make sure that highmem pages are not added to symlink page cache

inode_nohighmem() is sufficient to make sure that page_get_link()
won't try to allocate a highmem page.  Moreover, it is sufficient
to make sure that page_symlink/__page_symlink won't do the same
thing.  However, any filesystem that manually preseeds the symlink's
page cache upon symlink(2) needs to make sure that the page it
inserts there won't be a highmem one.

Fortunately, only nfs and shmem have run afoul of that...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>