lustre/kernel_patches/patches/ext3-raw-lookup-pdirops.patch

   1  fs/ext3/namei.c    |   31 +++++++++++++++++++++++++++++++
   2  include/linux/fs.h |    1 +
   3  2 files changed, 32 insertions(+)
   4
   5 --- linux-2.4.18-p4smp1Guser/include/linux/fs.h~ext3-raw-lookup Thu Sep 25 15:59:59 2003
   6 +++ linux-2.4.18-p4smp1Guser-pschwan/include/linux/fs.h Thu Sep 25 15:59:59 2003
   7 @@ -911,6 +911,7 @@ struct inode_operations {
   8         int (*create) (struct inode *,struct dentry *,int);
   9         int (*create_it) (struct inode *,struct dentry *,int, struct lookup_intent *);
  10         struct dentry * (*lookup) (struct inode *,struct dentry *);
  11 +       int (*lookup_raw) (struct inode *, const char *, int, ino_t *);
  12         struct dentry * (*lookup_it) (struct inode *,struct dentry *, struct lookup_intent *, int flags);
  13         int (*link) (struct dentry *,struct inode *,struct dentry *);
  14         int (*link_raw) (struct nameidata *,struct nameidata *);
  15 --- linux-2.4.18-p4smp1Guser/fs/ext3/namei.c~ext3-raw-lookup    Thu Sep 25 15:59:59 2003
  16 +++ linux-2.4.18-p4smp1Guser-pschwan/fs/ext3/namei.c    Thu Sep 25 16:16:48 2003
  17 @@ -1121,6 +1121,36 @@ static struct dentry *ext3_lookup(struct
  18         return NULL;
  19  }
  20
  21 +static int ext3_lookup_raw(struct inode *dir, const char *name,
  22 +                               int len, ino_t *data)
  23 +{
  24 +       struct ext3_dir_entry_2 *de;
  25 +       struct buffer_head *bh;
  26 +       struct dentry parent;
  27 +       struct dentry dentry;
  28 +       void *lock = NULL;
  29 +
  30 +       if (len > EXT3_NAME_LEN)
  31 +               return -ENAMETOOLONG;
  32 +
  33 +       parent.d_inode = dir;
  34 +       dentry.d_parent = &parent;
  35 +       dentry.d_name.name = name;
  36 +       dentry.d_name.len = len;
  37 +
  38 +       bh = ext3_find_entry(&dentry, &de, 0, &lock);
  39 +       if (bh) {
  40 +               unsigned long ino = le32_to_cpu(de->inode);
  41 +               ext3_unlock_htree(dir, lock);
  42 +               brelse (bh);
  43 +               if (data)
  44 +                       *data = ino;
  45 +               return 0; /* found name */
  46 +       }
  47 +
  48 +       return -ENOENT;
  49 +}
  50 +
  51  #define S_SHIFT 12
  52  static unsigned char ext3_type_by_mode[S_IFMT >> S_SHIFT] = {
  53         [S_IFREG >> S_SHIFT]    EXT3_FT_REG_FILE,
  54 @@ -2623,6 +2653,7 @@ static inline void ext3_unlock_htree(str
  55  struct inode_operations ext3_dir_inode_operations = {
  56         create:         ext3_create,            /* BKL held */
  57         lookup:         ext3_lookup,            /* BKL held */
  58 +       lookup_raw:     ext3_lookup_raw,        /* BKL held */
  59         link:           ext3_link,              /* BKL held */
  60         unlink:         ext3_unlink,            /* BKL held */
  61         symlink:        ext3_symlink,           /* BKL held */
  62
  63 _