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authorNick Piggin <npiggin@kernel.dk>2011-01-07 17:49:57 +1100
committerNick Piggin <npiggin@kernel.dk>2011-01-07 17:50:29 +1100
commit34286d6662308d82aed891852d04c7c3a2649b16 (patch)
treec4b7311404d302e7cb94df7a4690298e1059910a /fs/ncpfs
parent44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9 (diff)
fs: rcu-walk aware d_revalidate method
Require filesystems be aware of .d_revalidate being called in rcu-walk mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning -ECHILD from all implementations. Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/ncpfs')
-rw-r--r--fs/ncpfs/dir.c4
-rw-r--r--fs/ncpfs/inode.c1
2 files changed, 5 insertions, 0 deletions
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 4b9cbb28d7f..28f136d4aae 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -17,6 +17,7 @@
#include <linux/kernel.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
+#include <linux/namei.h>
#include <asm/uaccess.h>
#include <asm/byteorder.h>
@@ -308,6 +309,9 @@ ncp_lookup_validate(struct dentry *dentry, struct nameidata *nd)
int res, val = 0, len;
__u8 __name[NCP_MAXPATHLEN + 1];
+ if (nd->flags & LOOKUP_RCU)
+ return -ECHILD;
+
parent = dget_parent(dentry);
dir = parent->d_inode;
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 0c75a5f3caf..9531c052d7a 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -29,6 +29,7 @@
#include <linux/vfs.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/namei.h>
#include <linux/ncp_fs.h>