kernel: add 2.6.33 patches

[openwrt/openwrt.git] / target / linux / generic-2.6 / patches-2.6.33 / 210-mini_fo_2.6.25_fixes.patch

diff --git a/target/linux/generic-2.6/patches-2.6.33/210-mini_fo_2.6.25_fixes.patch b/target/linux/generic-2.6/patches-2.6.33/210-mini_fo_2.6.25_fixes.patch
new file mode 100644 (file)
index 0000000..d71e3b6
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.33/210-mini_fo_2.6.25_fixes.patch
@@ -0,0 +1,143 @@
+--- a/fs/mini_fo/main.c
++++ b/fs/mini_fo/main.c
+@@ -79,6 +79,7 @@ mini_fo_tri_interpose(dentry_t *hidden_d
+        * of the new inode's fields
+        */
+ 
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+       /*
+        * original: inode = iget(sb, hidden_inode->i_ino);
+        */
+@@ -87,6 +88,13 @@ mini_fo_tri_interpose(dentry_t *hidden_d
+               err = -EACCES;          /* should be impossible??? */
+               goto out;
+       }
++#else
++      inode = mini_fo_iget(sb, iunique(sb, 25));
++      if (IS_ERR(inode)) {
++              err = PTR_ERR(inode);
++              goto out;
++      }
++#endif
+ 
+       /*
+        * interpose the inode if not already interposed
+@@ -184,9 +192,9 @@ mini_fo_parse_options(super_block_t *sb,
+                               hidden_root = ERR_PTR(err);
+                               goto out;
+                       }
+-                      hidden_root = nd.dentry;
+-                      stopd(sb)->base_dir_dentry = nd.dentry;
+-                      stopd(sb)->hidden_mnt = nd.mnt;
++                      hidden_root = nd_get_dentry(&nd);
++                      stopd(sb)->base_dir_dentry = nd_get_dentry(&nd);
++                      stopd(sb)->hidden_mnt = nd_get_mnt(&nd);
+ 
+               } else if(!strncmp("sto=", options, 4)) {
+                       /* parse the storage dir */
+@@ -204,9 +212,9 @@ mini_fo_parse_options(super_block_t *sb,
+                               hidden_root2 = ERR_PTR(err);
+                               goto out;
+                       }
+-                      hidden_root2 = nd2.dentry;
+-                      stopd(sb)->storage_dir_dentry = nd2.dentry;
+-                      stopd(sb)->hidden_mnt2 = nd2.mnt;
++                      hidden_root2 = nd_get_dentry(&nd2);
++                      stopd(sb)->storage_dir_dentry = nd_get_dentry(&nd2);
++                      stopd(sb)->hidden_mnt2 = nd_get_mnt(&nd2);
+                       stohs2(sb) = hidden_root2->d_sb;
+ 
+                       /* validate storage dir, this is done in
+--- a/fs/mini_fo/mini_fo.h
++++ b/fs/mini_fo/mini_fo.h
+@@ -302,6 +302,10 @@ extern int mini_fo_tri_interpose(dentry_
+ extern int mini_fo_cp_cont(dentry_t *tgt_dentry, struct vfsmount *tgt_mnt,
+                          dentry_t *src_dentry, struct vfsmount *src_mnt);
+ 
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)
++extern struct inode *mini_fo_iget(struct super_block *sb, unsigned long ino);
++#endif
++
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+ extern int mini_fo_create(inode_t *dir, dentry_t *dentry, int mode, struct nameidata *nd);
+ 
+@@ -501,6 +505,29 @@ static inline void double_unlock(struct 
+ #endif  /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) */
+ #endif /* __KERNEL__ */
+ 
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)
++static inline dentry_t *nd_get_dentry(struct nameidata *nd)
++{
++      return (nd->path.dentry);
++}
++
++static inline struct vfsmount *nd_get_mnt(struct nameidata *nd)
++{
++      return (nd->path.mnt);
++}
++#else
++static inline dentry_t *nd_get_dentry(struct nameidata *nd)
++{
++      return (nd->dentry);
++}
++
++static inline struct vfsmount *nd_get_mnt(struct nameidata *nd)
++{
++      return (nd->mnt);
++}
++#endif
++
+ /*
+  * Definitions for user and kernel code
+  */
+--- a/fs/mini_fo/super.c
++++ b/fs/mini_fo/super.c
+@@ -262,10 +262,31 @@ mini_fo_umount_begin(super_block_t *sb)
+ }
+ #endif
+ 
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)
++struct inode *
++mini_fo_iget(struct super_block *sb, unsigned long ino)
++{
++      struct inode *inode;
++
++      inode = iget_locked(sb, ino);
++      if (!inode)
++              return ERR_PTR(-ENOMEM);
++
++      if (!(inode->i_state & I_NEW))
++              return inode;
++
++      mini_fo_read_inode(inode);
++
++      unlock_new_inode(inode);
++      return inode;
++}
++#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25) */
+ 
+ struct super_operations mini_fo_sops =
+ {
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
+       read_inode:             mini_fo_read_inode,
++#endif
+ #if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA)
+       write_inode:    mini_fo_write_inode,
+ #endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */
+--- a/fs/mini_fo/aux.c
++++ b/fs/mini_fo/aux.c
+@@ -164,11 +164,11 @@ dentry_t *bpath_walk(super_block_t *sb, 
+       err = vfs_path_lookup(mnt->mnt_root, mnt, bpath+1, 0, &nd);
+ 
+       /* validate */
+-      if (err || !nd.dentry || !nd.dentry->d_inode) {
++      if (err || !nd_get_dentry(&nd) || !nd_get_dentry(&nd)->d_inode) {
+               printk(KERN_CRIT "mini_fo: bpath_walk: path_walk failed.\n");
+               return NULL;
+       }
+-      return nd.dentry;
++      return nd_get_dentry(&nd);
+ }
+ 
+