1 files changed, 10 insertions, 19 deletions

diff --git a/mm/shmem.c b/mm/shmem.c
index eef4ebea515..0cd7f66f1c6 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1545,8 +1545,8 @@ static int shmem_mmap(struct file *file, struct vm_area_struct *vma)
         return 0;
 }
 
-static struct inode *shmem_get_inode(struct super_block *sb, int mode,
-                                        dev_t dev, unsigned long flags)
+static struct inode *shmem_get_inode(struct super_block *sb, const struct inode *dir,
+                                     int mode, dev_t dev, unsigned long flags)
 {
         struct inode *inode;
         struct shmem_inode_info *info;
@@ -1557,9 +1557,7 @@ static struct inode *shmem_get_inode(struct super_block *sb, int mode,
 
         inode = new_inode(sb);
         if (inode) {
-                inode->i_mode = mode;
-                inode->i_uid = current_fsuid();
-                inode->i_gid = current_fsgid();
+                inode_init_owner(inode, dir, mode);
                 inode->i_blocks = 0;
                 inode->i_mapping->backing_dev_info = &shmem_backing_dev_info;
                 inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
@@ -1814,7 +1812,7 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
         struct inode *inode;
         int error = -ENOSPC;
 
-        inode = shmem_get_inode(dir->i_sb, mode, dev, VM_NORESERVE);
+        inode = shmem_get_inode(dir->i_sb, dir, mode, dev, VM_NORESERVE);
         if (inode) {
                 error = security_inode_init_security(inode, dir, NULL, NULL,
                                                      NULL);
@@ -1833,11 +1831,6 @@ shmem_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 #else
                 error = 0;
 #endif
-                if (dir->i_mode & S_ISGID) {
-                        inode->i_gid = dir->i_gid;
-                        if (S_ISDIR(mode))
-                                inode->i_mode |= S_ISGID;
-                }
                 dir->i_size += BOGO_DIRENT_SIZE;
                 dir->i_ctime = dir->i_mtime = CURRENT_TIME;
                 d_instantiate(dentry, inode);
@@ -1957,7 +1950,7 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
         if (len > PAGE_CACHE_SIZE)
                 return -ENAMETOOLONG;
 
-        inode = shmem_get_inode(dir->i_sb, S_IFLNK|S_IRWXUGO, 0, VM_NORESERVE);
+        inode = shmem_get_inode(dir->i_sb, dir, S_IFLNK|S_IRWXUGO, 0, VM_NORESERVE);
         if (!inode)
                 return -ENOSPC;
 
@@ -1992,8 +1985,6 @@ static int shmem_symlink(struct inode *dir, struct dentry *dentry, const char *s
                 unlock_page(page);
                 page_cache_release(page);
         }
-        if (dir->i_mode & S_ISGID)
-                inode->i_gid = dir->i_gid;
         dir->i_size += BOGO_DIRENT_SIZE;
         dir->i_ctime = dir->i_mtime = CURRENT_TIME;
         d_instantiate(dentry, inode);
@@ -2071,14 +2062,14 @@ static int shmem_xattr_security_set(struct dentry *dentry, const char *name,
                                           size, flags);
 }
 
-static struct xattr_handler shmem_xattr_security_handler = {
+static const struct xattr_handler shmem_xattr_security_handler = {
         .prefix = XATTR_SECURITY_PREFIX,
         .list   = shmem_xattr_security_list,
         .get    = shmem_xattr_security_get,
         .set    = shmem_xattr_security_set,
 };
 
-static struct xattr_handler *shmem_xattr_handlers[] = {
+static const struct xattr_handler *shmem_xattr_handlers[] = {
         &generic_acl_access_handler,
         &generic_acl_default_handler,
         &shmem_xattr_security_handler,
@@ -2366,7 +2357,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent)
         sb->s_flags |= MS_POSIXACL;
 #endif
 
-        inode = shmem_get_inode(sb, S_IFDIR | sbinfo->mode, 0, VM_NORESERVE);
+        inode = shmem_get_inode(sb, NULL, S_IFDIR | sbinfo->mode, 0, VM_NORESERVE);
         if (!inode)
                 goto failed;
         inode->i_uid = sbinfo->uid;
@@ -2611,7 +2602,7 @@ int shmem_lock(struct file *file, int lock, struct user_struct *user)
 
 #define shmem_vm_ops                            generic_file_vm_ops
 #define shmem_file_operations                   ramfs_file_operations
-#define shmem_get_inode(sb, mode, dev, flags)   ramfs_get_inode(sb, mode, dev)
+#define shmem_get_inode(sb, dir, mode, dev, flags)      ramfs_get_inode(sb, dir, mode, dev)
 #define shmem_acct_size(flags, size)            0
 #define shmem_unacct_size(flags, size)          do {} while (0)
 #define SHMEM_MAX_BYTES                         MAX_LFS_FILESIZE
@@ -2655,7 +2646,7 @@ struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags
         path.mnt = mntget(shm_mnt);
 
         error = -ENOSPC;
-        inode = shmem_get_inode(root->d_sb, S_IFREG | S_IRWXUGO, 0, flags);
+        inode = shmem_get_inode(root->d_sb, NULL, S_IFREG | S_IRWXUGO, 0, flags);
         if (!inode)
                 goto put_dentry;