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

3 files changed, 26 insertions, 18 deletions

diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 54c576d414c3..de1f9f78625a 100644
--- a/include/linux/ext4_fs.h
+++ b/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,
diff --git a/include/linux/ext4_fs_extents.h b/include/linux/ext4_fs_extents.h
index 7eb1d73fc5d1..acfe59740b03 100644
--- a/include/linux/ext4_fs_extents.h
+++ b/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 *);
diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h
index d5b177e5b395..9de494406995 100644
--- a/include/linux/ext4_fs_i.h
+++ b/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