Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  [PATCH] get stack footprint of pathname resolution back to relative sanity
  [PATCH] double iput() on failure exit in hugetlb
  [PATCH] double dput() on failure exit in tiny-shmem
  [PATCH] fix up new filp allocators
  [PATCH] check for null vfsmount in dentry_open()
  [PATCH] reiserfs: eliminate private use of struct file in xattr
  [PATCH] sanitize hppfs
  hppfs pass vfsmount to dentry_open()
  [PATCH] restore export of do_kern_mount()

1 files changed, 30 insertions, 80 deletions

diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index eba037b3338f..344b9b96cc56 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -191,28 +191,11 @@ static struct dentry *get_xa_file_dentry(const struct inode *inode,
         dput(xadir);
         if (err)
                 xafile = ERR_PTR(err);
-        return xafile;
-}
-
-/* Opens a file pointer to the attribute associated with inode */
-static struct file *open_xa_file(const struct inode *inode, const char *name,
-                                 int flags)
-{
-        struct dentry *xafile;
-        struct file *fp;
-
-        xafile = get_xa_file_dentry(inode, name, flags);
-        if (IS_ERR(xafile))
-                return ERR_PTR(PTR_ERR(xafile));
         else if (!xafile->d_inode) {
                 dput(xafile);
-                return ERR_PTR(-ENODATA);
+                xafile = ERR_PTR(-ENODATA);
         }
-
-        fp = dentry_open(xafile, NULL, O_RDWR);
-        /* dentry_open dputs the dentry if it fails */
-
-        return fp;
+        return xafile;
 }
 
 /*
@@ -228,9 +211,8 @@ static struct file *open_xa_file(const struct inode *inode, const char *name,
  * we're called with i_mutex held, so there are no worries about the directory
  * changing underneath us.
  */
-static int __xattr_readdir(struct file *filp, void *dirent, filldir_t filldir)
+static int __xattr_readdir(struct inode *inode, void *dirent, filldir_t filldir)
 {
-        struct inode *inode = filp->f_path.dentry->d_inode;
         struct cpu_key pos_key; /* key of current position in the directory (key of directory entry) */
         INITIALIZE_PATH(path_to_entry);
         struct buffer_head *bh;
@@ -374,23 +356,16 @@ static int __xattr_readdir(struct file *filp, void *dirent, filldir_t filldir)
  *
  */
 static
-int xattr_readdir(struct file *file, filldir_t filler, void *buf)
+int xattr_readdir(struct inode *inode, filldir_t filler, void *buf)
 {
-        struct inode *inode = file->f_path.dentry->d_inode;
-        int res = -ENOTDIR;
-        if (!file->f_op || !file->f_op->readdir)
-                goto out;
+        int res = -ENOENT;
         mutex_lock_nested(&inode->i_mutex, I_MUTEX_XATTR);
-//        down(&inode->i_zombie);
-        res = -ENOENT;
         if (!IS_DEADDIR(inode)) {
                 lock_kernel();
-                res = __xattr_readdir(file, buf, filler);
+                res = __xattr_readdir(inode, buf, filler);
                 unlock_kernel();
         }
-//        up(&inode->i_zombie);
         mutex_unlock(&inode->i_mutex);
-      out:
         return res;
 }
 
@@ -442,7 +417,7 @@ reiserfs_xattr_set(struct inode *inode, const char *name, const void *buffer,
                    size_t buffer_size, int flags)
 {
         int err = 0;
-        struct file *fp;
+        struct dentry *dentry;
         struct page *page;
         char *data;
         struct address_space *mapping;
@@ -460,18 +435,18 @@ reiserfs_xattr_set(struct inode *inode, const char *name, const void *buffer,
                 xahash = xattr_hash(buffer, buffer_size);
 
       open_file:
-        fp = open_xa_file(inode, name, flags);
-        if (IS_ERR(fp)) {
-                err = PTR_ERR(fp);
+        dentry = get_xa_file_dentry(inode, name, flags);
+        if (IS_ERR(dentry)) {
+                err = PTR_ERR(dentry);
                 goto out;
         }
 
-        xinode = fp->f_path.dentry->d_inode;
+        xinode = dentry->d_inode;
         REISERFS_I(inode)->i_flags |= i_has_xattr_dir;
 
         /* we need to copy it off.. */
         if (xinode->i_nlink > 1) {
-                fput(fp);
+                dput(dentry);
                 err = reiserfs_xattr_del(inode, name);
                 if (err < 0)
                         goto out;
@@ -485,7 +460,7 @@ reiserfs_xattr_set(struct inode *inode, const char *name, const void *buffer,
         newattrs.ia_size = buffer_size;
         newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
         mutex_lock_nested(&xinode->i_mutex, I_MUTEX_XATTR);
-        err = notify_change(fp->f_path.dentry, &newattrs);
+        err = notify_change(dentry, &newattrs);
         if (err)
                 goto out_filp;
 
@@ -518,15 +493,14 @@ reiserfs_xattr_set(struct inode *inode, const char *name, const void *buffer,
                         rxh->h_hash = cpu_to_le32(xahash);
                 }
 
-                err = reiserfs_prepare_write(fp, page, page_offset,
+                err = reiserfs_prepare_write(NULL, page, page_offset,
                                             page_offset + chunk + skip);
                 if (!err) {
                         if (buffer)
                                 memcpy(data + skip, buffer + buffer_pos, chunk);
-                        err =
-                            reiserfs_commit_write(fp, page, page_offset,
-                                                  page_offset + chunk +
-                                                  skip);
+                        err = reiserfs_commit_write(NULL, page, page_offset,
+                                                    page_offset + chunk +
+                                                    skip);
                 }
                 unlock_page(page);
                 reiserfs_put_page(page);
@@ -548,7 +522,7 @@ reiserfs_xattr_set(struct inode *inode, const char *name, const void *buffer,
 
       out_filp:
         mutex_unlock(&xinode->i_mutex);
-        fput(fp);
+        dput(dentry);
 
       out:
         return err;
@@ -562,7 +536,7 @@ reiserfs_xattr_get(const struct inode *inode, const char *name, void *buffer,
                    size_t buffer_size)
 {
         ssize_t err = 0;
-        struct file *fp;
+        struct dentry *dentry;
         size_t isize;
         size_t file_pos = 0;
         size_t buffer_pos = 0;
@@ -578,13 +552,13 @@ reiserfs_xattr_get(const struct inode *inode, const char *name, void *buffer,
         if (get_inode_sd_version(inode) == STAT_DATA_V1)
                 return -EOPNOTSUPP;
 
-        fp = open_xa_file(inode, name, FL_READONLY);
-        if (IS_ERR(fp)) {
-                err = PTR_ERR(fp);
+        dentry = get_xa_file_dentry(inode, name, FL_READONLY);
+        if (IS_ERR(dentry)) {
+                err = PTR_ERR(dentry);
                 goto out;
         }
 
-        xinode = fp->f_path.dentry->d_inode;
+        xinode = dentry->d_inode;
         isize = xinode->i_size;
         REISERFS_I(inode)->i_flags |= i_has_xattr_dir;
 
@@ -652,7 +626,7 @@ reiserfs_xattr_get(const struct inode *inode, const char *name, void *buffer,
         }
 
       out_dput:
-        fput(fp);
+        dput(dentry);
 
       out:
         return err;
@@ -742,7 +716,6 @@ reiserfs_delete_xattrs_filler(void *buf, const char *name, int namelen,
 /* This is called w/ inode->i_mutex downed */
 int reiserfs_delete_xattrs(struct inode *inode)
 {
-        struct file *fp;
         struct dentry *dir, *root;
         int err = 0;
 
@@ -763,15 +736,8 @@ int reiserfs_delete_xattrs(struct inode *inode)
                 return 0;
         }
 
-        fp = dentry_open(dir, NULL, O_RDWR);
-        if (IS_ERR(fp)) {
-                err = PTR_ERR(fp);
-                /* dentry_open dputs the dentry if it fails */
-                goto out;
-        }
-
         lock_kernel();
-        err = xattr_readdir(fp, reiserfs_delete_xattrs_filler, dir);
+        err = xattr_readdir(dir->d_inode, reiserfs_delete_xattrs_filler, dir);
         if (err) {
                 unlock_kernel();
                 goto out_dir;
@@ -791,7 +757,7 @@ int reiserfs_delete_xattrs(struct inode *inode)
         unlock_kernel();
 
       out_dir:
-        fput(fp);
+        dput(dir);
 
       out:
         if (!err)
@@ -833,7 +799,6 @@ reiserfs_chown_xattrs_filler(void *buf, const char *name, int namelen,
 
 int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs)
 {
-        struct file *fp;
         struct dentry *dir;
         int err = 0;
         struct reiserfs_chown_buf buf;
@@ -857,13 +822,6 @@ int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs)
                 goto out;
         }
 
-        fp = dentry_open(dir, NULL, O_RDWR);
-        if (IS_ERR(fp)) {
-                err = PTR_ERR(fp);
-                /* dentry_open dputs the dentry if it fails */
-                goto out;
-        }
-
         lock_kernel();
 
         attrs->ia_valid &= (ATTR_UID | ATTR_GID | ATTR_CTIME);
@@ -871,7 +829,7 @@ int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs)
         buf.attrs = attrs;
         buf.inode = inode;
 
-        err = xattr_readdir(fp, reiserfs_chown_xattrs_filler, &buf);
+        err = xattr_readdir(dir->d_inode, reiserfs_chown_xattrs_filler, &buf);
         if (err) {
                 unlock_kernel();
                 goto out_dir;
@@ -881,7 +839,7 @@ int reiserfs_chown_xattrs(struct inode *inode, struct iattr *attrs)
         unlock_kernel();
 
       out_dir:
-        fput(fp);
+        dput(dir);
 
       out:
         attrs->ia_valid = ia_valid;
@@ -1029,7 +987,6 @@ reiserfs_listxattr_filler(void *buf, const char *name, int namelen,
  */
 ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
 {
-        struct file *fp;
         struct dentry *dir;
         int err = 0;
         struct reiserfs_listxattr_buf buf;
@@ -1052,13 +1009,6 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
                 goto out;
         }
 
-        fp = dentry_open(dir, NULL, O_RDWR);
-        if (IS_ERR(fp)) {
-                err = PTR_ERR(fp);
-                /* dentry_open dputs the dentry if it fails */
-                goto out;
-        }
-
         buf.r_buf = buffer;
         buf.r_size = buffer ? size : 0;
         buf.r_pos = 0;
@@ -1066,7 +1016,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
 
         REISERFS_I(dentry->d_inode)->i_flags |= i_has_xattr_dir;
 
-        err = xattr_readdir(fp, reiserfs_listxattr_filler, &buf);
+        err = xattr_readdir(dir->d_inode, reiserfs_listxattr_filler, &buf);
         if (err)
                 goto out_dir;
 
@@ -1076,7 +1026,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
                 err = buf.r_pos;
 
       out_dir:
-        fput(fp);
+        dput(dir);
 
       out:
         reiserfs_read_unlock_xattr_i(dentry->d_inode);