Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  Define/reserve new ext4 superblock fields
  When ext4_ext_insert_extent() fails to insert new blocks
  ext4: Extent overlap bugfix
  Remove unnecessary exported symbols.
  EXT4: Fix whitespace

fs/ext4/balloc.c

@@ -30,15 +30,15 @@
 void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
 		unsigned long *blockgrpp, ext4_grpblk_t *offsetp)
 {
-        struct ext4_super_block *es = EXT4_SB(sb)->s_es;
+	struct ext4_super_block *es = EXT4_SB(sb)->s_es;
 	ext4_grpblk_t offset;
 
-        blocknr = blocknr - le32_to_cpu(es->s_first_data_block);
+	blocknr = blocknr - le32_to_cpu(es->s_first_data_block);
 	offset = do_div(blocknr, EXT4_BLOCKS_PER_GROUP(sb));
 	if (offsetp)
 		*offsetp = offset;
 	if (blockgrpp)
-	        *blockgrpp = blocknr;
+		*blockgrpp = blocknr;
 
 }
 

fs/ext4/inode.c

@@ -255,8 +255,8 @@ static int verify_chain(Indirect *from, Indirect *to)
  *	@inode: inode in question (we are only interested in its superblock)
  *	@i_block: block number to be parsed
  *	@offsets: array to store the offsets in
- *      @boundary: set this non-zero if the referred-to block is likely to be
- *             followed (on disk) by an indirect block.
+ *	@boundary: set this non-zero if the referred-to block is likely to be
+ *	       followed (on disk) by an indirect block.
  *
  *	To store the locations of file's data ext4 uses a data structure common
  *	for UNIX filesystems - tree of pointers anchored in the inode, with

fs/ext4/namei.c

@@ -46,7 +46,7 @@
  */
 #define NAMEI_RA_CHUNKS  2
 #define NAMEI_RA_BLOCKS  4
-#define NAMEI_RA_SIZE        (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
+#define NAMEI_RA_SIZE	     (NAMEI_RA_CHUNKS * NAMEI_RA_BLOCKS)
 #define NAMEI_RA_INDEX(c,b)  (((c) * NAMEI_RA_BLOCKS) + (b))
 
 static struct buffer_head *ext4_append(handle_t *handle,
@@ -241,7 +241,7 @@ static inline unsigned dx_node_limit (struct inode *dir)
 static void dx_show_index (char * label, struct dx_entry *entries)
 {
 	int i, n = dx_get_count (entries);
-        printk("%s index ", label);
+	printk("%s index ", label);
 	for (i = 0; i < n; i++) {
 		printk("%x->%u ", i? dx_get_hash(entries + i) :
 				0, dx_get_block(entries + i));

fs/ext4/super.c

@@ -1985,7 +1985,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
 
 	if (bd_claim(bdev, sb)) {
 		printk(KERN_ERR
-		        "EXT4: failed to claim external journal device.\n");
+			"EXT4: failed to claim external journal device.\n");
 		blkdev_put(bdev);
 		return NULL;
 	}

include/linux/ext4_fs.h

@@ -32,9 +32,9 @@
 /*
  * Define EXT4_RESERVATION to reserve data blocks for expanding files
  */
-#define EXT4_DEFAULT_RESERVE_BLOCKS     8
+#define EXT4_DEFAULT_RESERVE_BLOCKS	8
 /*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
-#define EXT4_MAX_RESERVE_BLOCKS         1027
+#define EXT4_MAX_RESERVE_BLOCKS		1027
 #define EXT4_RESERVE_WINDOW_NOT_ALLOCATED 0
 /*
  * Always enable hashed directories
@@ -204,12 +204,12 @@ struct ext4_group_desc
 
 /* Used to pass group descriptor data when online resize is done */
 struct ext4_new_group_input {
-	__u32 group;            /* Group number for this data */
-	__u64 block_bitmap;     /* Absolute block number of block bitmap */
-	__u64 inode_bitmap;     /* Absolute block number of inode bitmap */
-	__u64 inode_table;      /* Absolute block number of inode table start */
-	__u32 blocks_count;     /* Total number of blocks in this group */
-	__u16 reserved_blocks;  /* Number of reserved blocks in this group */
+	__u32 group;		/* Group number for this data */
+	__u64 block_bitmap;	/* Absolute block number of block bitmap */
+	__u64 inode_bitmap;	/* Absolute block number of inode bitmap */
+	__u64 inode_table;	/* Absolute block number of inode table start */
+	__u32 blocks_count;	/* Total number of blocks in this group */
+	__u16 reserved_blocks;	/* Number of reserved blocks in this group */
 	__u16 unused;
 };
 
@@ -310,7 +310,7 @@ struct ext4_inode {
 			__u8	l_i_frag;	/* Fragment number */
 			__u8	l_i_fsize;	/* Fragment size */
 			__le16	l_i_file_acl_high;
-			__le16	l_i_uid_high;	/* these 2 fields    */
+			__le16	l_i_uid_high;	/* these 2 fields */
 			__le16	l_i_gid_high;	/* were reserved2[0] */
 			__u32	l_i_reserved2;
 		} linux2;
@@ -513,7 +513,14 @@ struct ext4_super_block {
 /*150*/	__le32	s_blocks_count_hi;	/* Blocks count */
 	__le32	s_r_blocks_count_hi;	/* Reserved blocks count */
 	__le32	s_free_blocks_count_hi;	/* Free blocks count */
-	__u32	s_reserved[169];	/* Padding to the end of the block */
+	__u16	s_min_extra_isize;	/* All inodes have at least # bytes */
+	__u16	s_want_extra_isize; 	/* New inodes should reserve # bytes */
+	__u32	s_flags;		/* Miscellaneous flags */
+	__u16   s_raid_stride;		/* RAID stride */
+	__u16   s_mmp_interval;         /* # seconds to wait in MMP checking */
+	__u64   s_mmp_block;            /* Block for multi-mount protection */
+	__u32   s_raid_stripe_width;    /* blocks on all data disks (N*stride)*/
+	__u32   s_reserved[163];        /* Padding to the end of the block */
 };
 
 #ifdef __KERNEL__
@@ -780,9 +787,9 @@ void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr,
  * Ok, these declarations are also in <linux/kernel.h> but none of the
  * ext4 source programs needs to include it so they are duplicated here.
  */
-# define NORET_TYPE    /**/
-# define ATTRIB_NORET  __attribute__((noreturn))
-# define NORET_AND     noreturn,
+# define NORET_TYPE	/**/
+# define ATTRIB_NORET	__attribute__((noreturn))
+# define NORET_AND	noreturn,
 
 /* balloc.c */
 extern unsigned int ext4_block_group(struct super_block *sb,

include/linux/ext4_fs_extents.h

@@ -151,8 +151,8 @@ typedef int (*ext_prepare_callback)(struct inode *, struct ext4_ext_path *,
 	((struct ext4_extent_idx *) (((char *) (__hdr__)) +	\
 				     sizeof(struct ext4_extent_header)))
 #define EXT_HAS_FREE_INDEX(__path__) \
-        (le16_to_cpu((__path__)->p_hdr->eh_entries) \
-	                             < le16_to_cpu((__path__)->p_hdr->eh_max))
+	(le16_to_cpu((__path__)->p_hdr->eh_entries) \
+				     < le16_to_cpu((__path__)->p_hdr->eh_max))
 #define EXT_LAST_EXTENT(__hdr__) \
 	(EXT_FIRST_EXTENT((__hdr__)) + le16_to_cpu((__hdr__)->eh_entries) - 1)
 #define EXT_LAST_INDEX(__hdr__) \
@@ -190,6 +190,7 @@ ext4_ext_invalidate_cache(struct inode *inode)
 
 extern int ext4_extent_tree_init(handle_t *, struct inode *);
 extern int ext4_ext_calc_credits_for_insert(struct inode *, struct ext4_ext_path *);
+extern unsigned int ext4_ext_check_overlap(struct inode *, struct ext4_extent *, struct ext4_ext_path *);
 extern int ext4_ext_insert_extent(handle_t *, struct inode *, struct ext4_ext_path *, struct ext4_extent *);
 extern int ext4_ext_walk_space(struct inode *, unsigned long, unsigned long, ext_prepare_callback, void *);
 extern struct ext4_ext_path * ext4_ext_find_extent(struct inode *, int, struct ext4_ext_path *);

include/linux/ext4_fs_i.h

@@ -41,14 +41,14 @@ struct ext4_reserve_window_node {
 
 struct ext4_block_alloc_info {
 	/* information about reservation window */
-	struct ext4_reserve_window_node	rsv_window_node;
+	struct ext4_reserve_window_node rsv_window_node;
 	/*
 	 * was i_next_alloc_block in ext4_inode_info
 	 * is the logical (file-relative) number of the
 	 * most-recently-allocated block in this file.
 	 * We use this for detecting linearly ascending allocation requests.
 	 */
-	__u32                   last_alloc_logical_block;
+	__u32 last_alloc_logical_block;
 	/*
 	 * Was i_next_alloc_goal in ext4_inode_info
 	 * is the *physical* companion to i_next_alloc_block.
@@ -56,7 +56,7 @@ struct ext4_block_alloc_info {
 	 * allocated to this file.  This give us the goal (target) for the next
 	 * allocation when we detect linearly ascending requests.
 	 */
-	ext4_fsblk_t		last_alloc_physical_block;
+	ext4_fsblk_t last_alloc_physical_block;
 };
 
 #define rsv_start rsv_window._rsv_start