fat: new export ops

Very little changes here, fat had a mostly no op decode_fh before and does not
store any parent information.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 17 deletions

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index c0c5e9c55b58..14d75fcaf2b7 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -653,24 +653,15 @@ static const struct super_operations fat_sops = {
  * of i_logstart is used to store the directory entry offset.
  */
 
-static struct dentry *
-fat_decode_fh(struct super_block *sb, __u32 *fh, int len, int fhtype,
-              int (*acceptable)(void *context, struct dentry *de),
-              void *context)
-{
-        if (fhtype != 3)
-                return ERR_PTR(-ESTALE);
-        if (len < 5)
-                return ERR_PTR(-ESTALE);
-
-        return sb->s_export_op->find_exported_dentry(sb, fh, NULL, acceptable, context);
-}
-
-static struct dentry *fat_get_dentry(struct super_block *sb, void *inump)
+static struct dentry *fat_fh_to_dentry(struct super_block *sb,
+                struct fid *fid, int fh_len, int fh_type)
 {
         struct inode *inode = NULL;
         struct dentry *result;
-        __u32 *fh = inump;
+        u32 *fh = fid->raw;
+
+        if (fh_len < 5 || fh_type != 3)
+                return NULL;
 
         inode = iget(sb, fh[0]);
         if (!inode || is_bad_inode(inode) || inode->i_generation != fh[1]) {
@@ -784,9 +775,8 @@ out:
 }
 
 static struct export_operations fat_export_ops = {
-        .decode_fh      = fat_decode_fh,
         .encode_fh      = fat_encode_fh,
-        .get_dentry     = fat_get_dentry,
+        .fh_to_dentry   = fat_fh_to_dentry,
         .get_parent     = fat_get_parent,
 };