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| author | Al Viro | 2015-11-17 07:07:57 +0100 |
|---|---|---|
| committer | Al Viro | 2015-12-09 04:41:36 +0100 |
| commit | 21fc61c73c3903c4c312d0802da01ec2b323d174 (patch) | |
| tree | a26c29e3fbb766f00b023724e9e5b8b9bba9b879 /fs/nfs/inode.c | |
| parent | namei: page_getlink() and page_follow_link_light() are the same thing (diff) | |
| download | kernel-qcow2-linux-21fc61c73c3903c4c312d0802da01ec2b323d174.tar.gz kernel-qcow2-linux-21fc61c73c3903c4c312d0802da01ec2b323d174.tar.xz kernel-qcow2-linux-21fc61c73c3903c4c312d0802da01ec2b323d174.zip | |
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/nfs/inode.c')
| -rw-r--r-- | fs/nfs/inode.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 31b0a52223a7..ae9aa0b8155c 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -408,9 +408,10 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st inode->i_fop = NULL; inode->i_flags |= S_AUTOMOUNT; } - } else if (S_ISLNK(inode->i_mode)) + } else if (S_ISLNK(inode->i_mode)) { inode->i_op = &nfs_symlink_inode_operations; - else + inode_nohighmem(inode); + } else init_special_inode(inode, inode->i_mode, fattr->rdev); memset(&inode->i_atime, 0, sizeof(inode->i_atime)); |