add missing patch

diff --git a/lustre/kernel_patches/patches/vfs_races-2.6-fc3.patch b/lustre/kernel_patches/patches/vfs_races-2.6-fc3.patch
new file mode 100644 (file)
index 0000000..a0b643f
--- /dev/null
+++ b/lustre/kernel_patches/patches/vfs_races-2.6-fc3.patch
@@ -0,0 +1,64 @@
+Index: linux-2.6.11/fs/dcache.c
+===================================================================
+--- linux-2.6.11.orig/fs/dcache.c      2005-04-13 22:44:37.698760922 -0400
++++ linux-2.6.11/fs/dcache.c   2005-04-13 22:44:50.482498026 -0400
+@@ -1183,7 +1183,7 @@
+       spin_unlock(&dcache_lock);
+ }
+ 
+-static void __d_rehash(struct dentry * entry, struct hlist_head *list)
++static void __d_rehash_internal(struct dentry * entry, struct hlist_head *list)
+ {
+ 
+       entry->d_flags &= ~DCACHE_UNHASHED;
+@@ -1197,15 +1197,24 @@
+  * Adds a dentry to the hash according to its name.
+  */
+  
+-void d_rehash(struct dentry * entry)
++void __d_rehash(struct dentry * entry, int lock)
+ {
+       struct hlist_head *list = d_hash(entry->d_parent, entry->d_name.hash);
+ 
+-      spin_lock(&dcache_lock);
++      if (lock)
++              spin_lock(&dcache_lock);
+       spin_lock(&entry->d_lock);
+-      __d_rehash(entry, list);
++      __d_rehash_internal(entry, list);
+       spin_unlock(&entry->d_lock);
+-      spin_unlock(&dcache_lock);
++      if (lock)
++              spin_unlock(&dcache_lock);
++}
++
++EXPORT_SYMBOL(__d_rehash);
++
++void d_rehash(struct dentry * entry)
++{
++      __d_rehash(entry, 1);
+ }
+ 
+ #define do_switch(x,y) do { \
+@@ -1308,7 +1317,7 @@
+ 
+ already_unhashed:
+       list = d_hash(target->d_parent, target->d_name.hash);
+-      __d_rehash(dentry, list);
++      __d_rehash_internal(dentry, list);
+ 
+       /* Unhash the target: dput() will then get rid of it */
+       __d_drop(target);
+Index: linux-2.6.11/include/linux/dcache.h
+===================================================================
+--- linux-2.6.11.orig/include/linux/dcache.h   2005-04-13 22:35:23.515178600 -0400
++++ linux-2.6.11/include/linux/dcache.h        2005-04-13 22:44:43.188221365 -0400
+@@ -159,6 +159,8 @@
+ 
+ #define DCACHE_REFERENCED     0x0008  /* Recently used, don't discard. */
+ #define DCACHE_UNHASHED               0x0010  
++#define DCACHE_LUSTRE_INVALID     0x0020  /* Lustre invalidated */
++
+ 
+ extern spinlock_t dcache_lock;
+