1 files changed, 7 insertions, 6 deletions

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 9ebde0cd632e..a2bb7d2870e4 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -961,7 +961,7 @@ struct ext4_inode_info {
         /*
          * i_block_group is the number of the block group which contains
          * this file's inode.  Constant across the lifetime of the inode,
-         * it is ued for making block allocation decisions - we try to
+         * it is used for making block allocation decisions - we try to
          * place a file's data blocks near its inode block, and new inodes
          * near to their parent directory's inode.
          */
@@ -1049,10 +1049,8 @@ struct ext4_inode_info {
         ext4_group_t    i_last_alloc_group;
 
         /* allocation reservation info for delalloc */
-        /* In case of bigalloc, these refer to clusters rather than blocks */
+        /* In case of bigalloc, this refer to clusters rather than blocks */
         unsigned int i_reserved_data_blocks;
-        unsigned int i_reserved_meta_blocks;
-        unsigned int i_allocated_meta_blocks;
         ext4_lblk_t i_da_metadata_calc_last_lblock;
         int i_da_metadata_calc_len;
 
@@ -2022,7 +2020,8 @@ static inline __le16 ext4_rec_len_to_disk(unsigned len, unsigned blocksize)
 
 #define is_dx(dir) (ext4_has_feature_dir_index((dir)->i_sb) && \
                     ext4_test_inode_flag((dir), EXT4_INODE_INDEX))
-#define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)
+#define EXT4_DIR_LINK_MAX(dir) unlikely((dir)->i_nlink >= EXT4_LINK_MAX && \
+                    !(ext4_has_feature_dir_nlink((dir)->i_sb) && is_dx(dir)))
 #define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)
 
 /* Legal values for the dx_root hash_version field: */
@@ -2462,6 +2461,8 @@ extern void ext4_process_freed_data(struct super_block *sb, tid_t commit_tid);
 int ext4_inode_is_fast_symlink(struct inode *inode);
 struct buffer_head *ext4_getblk(handle_t *, struct inode *, ext4_lblk_t, int);
 struct buffer_head *ext4_bread(handle_t *, struct inode *, ext4_lblk_t, int);
+int ext4_bread_batch(struct inode *inode, ext4_lblk_t block, int bh_count,
+                     bool wait, struct buffer_head **bhs);
 int ext4_get_block_unwritten(struct inode *inode, sector_t iblock,
                              struct buffer_head *bh_result, int create);
 int ext4_get_block(struct inode *inode, sector_t iblock,
@@ -3074,7 +3075,7 @@ extern int ext4_handle_dirty_dirent_node(handle_t *handle,
                                          struct inode *inode,
                                          struct buffer_head *bh);
 #define S_SHIFT 12
-static const unsigned char ext4_type_by_mode[S_IFMT >> S_SHIFT] = {
+static const unsigned char ext4_type_by_mode[(S_IFMT >> S_SHIFT) + 1] = {
         [S_IFREG >> S_SHIFT]    = EXT4_FT_REG_FILE,
         [S_IFDIR >> S_SHIFT]    = EXT4_FT_DIR,
         [S_IFCHR >> S_SHIFT]    = EXT4_FT_CHRDEV,