4 files changed, 25 insertions, 20 deletions

diff --git a/fs/ext2/dir.c b/fs/ext2/dir.c
index 3e7a84a1e509..0b02ba9642d2 100644
--- a/fs/ext2/dir.c
+++ b/fs/ext2/dir.c
@@ -248,7 +248,7 @@ static int
 ext2_readdir (struct file * filp, void * dirent, filldir_t filldir)
 {
         loff_t pos = filp->f_pos;
-        struct inode *inode = filp->f_dentry->d_inode;
+        struct inode *inode = filp->f_path.dentry->d_inode;
         struct super_block *sb = inode->i_sb;
         unsigned int offset = pos & ~PAGE_CACHE_MASK;
         unsigned long n = pos >> PAGE_CACHE_SHIFT;
diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c
index 1dfba77eab10..4b099d310712 100644
--- a/fs/ext2/ioctl.c
+++ b/fs/ext2/ioctl.c
@@ -44,6 +44,7 @@ int ext2_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
                 if (!S_ISDIR(inode->i_mode))
                         flags &= ~EXT2_DIRSYNC_FL;
 
+                mutex_lock(&inode->i_mutex);
                 oldflags = ei->i_flags;
 
                 /*
@@ -53,13 +54,16 @@ int ext2_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
                  * This test looks nicer. Thanks to Pauline Middelink
                  */
                 if ((flags ^ oldflags) & (EXT2_APPEND_FL | EXT2_IMMUTABLE_FL)) {
-                        if (!capable(CAP_LINUX_IMMUTABLE))
+                        if (!capable(CAP_LINUX_IMMUTABLE)) {
+                                mutex_unlock(&inode->i_mutex);
                                 return -EPERM;
+                        }
                 }
 
                 flags = flags & EXT2_FL_USER_MODIFIABLE;
                 flags |= oldflags & ~EXT2_FL_USER_MODIFIABLE;
                 ei->i_flags = flags;
+                mutex_unlock(&inode->i_mutex);
 
                 ext2_set_inode_flags(inode);
                 inode->i_ctime = CURRENT_TIME_SEC;
@@ -86,7 +90,7 @@ int ext2_ioctl (struct inode * inode, struct file * filp, unsigned int cmd,
 #ifdef CONFIG_COMPAT
 long ext2_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-        struct inode *inode = file->f_dentry->d_inode;
+        struct inode *inode = file->f_path.dentry->d_inode;
         int ret;
 
         /* These are just misnamed, they actually get/put from/to user an int */
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index d8b9abd95d07..6347c2dbdd81 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -135,12 +135,12 @@ static void ext2_put_super (struct super_block * sb)
         return;
 }
 
-static kmem_cache_t * ext2_inode_cachep;
+static struct kmem_cache * ext2_inode_cachep;
 
 static struct inode *ext2_alloc_inode(struct super_block *sb)
 {
         struct ext2_inode_info *ei;
-        ei = (struct ext2_inode_info *)kmem_cache_alloc(ext2_inode_cachep, SLAB_KERNEL);
+        ei = (struct ext2_inode_info *)kmem_cache_alloc(ext2_inode_cachep, GFP_KERNEL);
         if (!ei)
                 return NULL;
 #ifdef CONFIG_EXT2_FS_POSIX_ACL
@@ -156,7 +156,7 @@ static void ext2_destroy_inode(struct inode *inode)
         kmem_cache_free(ext2_inode_cachep, EXT2_I(inode));
 }
 
-static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
 {
         struct ext2_inode_info *ei = (struct ext2_inode_info *) foo;
 
@@ -597,8 +597,6 @@ static int ext2_check_descriptors (struct super_block * sb)
         return 1;
 }
 
-#define log2(n) ffz(~(n))
- 
 /*
  * Maximal file size.  There is a direct, and {,double-,triple-}indirect
  * block limit, and also a limit of (2^32 - 1) 512-byte sectors in i_blocks.
@@ -834,9 +832,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
         sbi->s_sbh = bh;
         sbi->s_mount_state = le16_to_cpu(es->s_state);
         sbi->s_addr_per_block_bits =
-                log2 (EXT2_ADDR_PER_BLOCK(sb));
+                ilog2 (EXT2_ADDR_PER_BLOCK(sb));
         sbi->s_desc_per_block_bits =
-                log2 (EXT2_DESC_PER_BLOCK(sb));
+                ilog2 (EXT2_DESC_PER_BLOCK(sb));
 
         if (sb->s_magic != EXT2_SUPER_MAGIC)
                 goto cantfind_ext2;
@@ -1090,8 +1088,10 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
 {
         struct super_block *sb = dentry->d_sb;
         struct ext2_sb_info *sbi = EXT2_SB(sb);
+        struct ext2_super_block *es = sbi->s_es;
         unsigned long overhead;
         int i;
+        u64 fsid;
 
         if (test_opt (sb, MINIX_DF))
                 overhead = 0;
@@ -1104,7 +1104,7 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
                  * All of the blocks before first_data_block are
                  * overhead
                  */
-                overhead = le32_to_cpu(sbi->s_es->s_first_data_block);
+                overhead = le32_to_cpu(es->s_first_data_block);
 
                 /*
                  * Add the overhead attributed to the superblock and
@@ -1125,14 +1125,18 @@ static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf)
 
         buf->f_type = EXT2_SUPER_MAGIC;
         buf->f_bsize = sb->s_blocksize;
-        buf->f_blocks = le32_to_cpu(sbi->s_es->s_blocks_count) - overhead;
+        buf->f_blocks = le32_to_cpu(es->s_blocks_count) - overhead;
         buf->f_bfree = ext2_count_free_blocks(sb);
-        buf->f_bavail = buf->f_bfree - le32_to_cpu(sbi->s_es->s_r_blocks_count);
-        if (buf->f_bfree < le32_to_cpu(sbi->s_es->s_r_blocks_count))
+        buf->f_bavail = buf->f_bfree - le32_to_cpu(es->s_r_blocks_count);
+        if (buf->f_bfree < le32_to_cpu(es->s_r_blocks_count))
                 buf->f_bavail = 0;
-        buf->f_files = le32_to_cpu(sbi->s_es->s_inodes_count);
-        buf->f_ffree = ext2_count_free_inodes (sb);
+        buf->f_files = le32_to_cpu(es->s_inodes_count);
+        buf->f_ffree = ext2_count_free_inodes(sb);
         buf->f_namelen = EXT2_NAME_LEN;
+        fsid = le64_to_cpup((void *)es->s_uuid) ^
+               le64_to_cpup((void *)es->s_uuid + sizeof(u64));
+        buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL;
+        buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL;
         return 0;
 }
 
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index af52a7f8b291..247efd0b51d6 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -342,12 +342,9 @@ static void ext2_xattr_update_super_block(struct super_block *sb)
         if (EXT2_HAS_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR))
                 return;
 
-        lock_super(sb);
-        EXT2_SB(sb)->s_es->s_feature_compat |=
-                cpu_to_le32(EXT2_FEATURE_COMPAT_EXT_ATTR);
+        EXT2_SET_COMPAT_FEATURE(sb, EXT2_FEATURE_COMPAT_EXT_ATTR);
         sb->s_dirt = 1;
         mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
-        unlock_super(sb);
 }
 
 /*