1 files changed, 61 insertions, 56 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 91b98b58ccb9..0a97b1ad3e19 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -79,7 +79,7 @@ ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
 {
         return le32_to_cpu(bg->bg_block_bitmap_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
+                 (ext4_fsblk_t)le32_to_cpu(bg->bg_block_bitmap_hi) << 32 : 0);
 }
 
 ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
@@ -87,7 +87,7 @@ ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
 {
         return le32_to_cpu(bg->bg_inode_bitmap_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
+                 (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
 }
 
 ext4_fsblk_t ext4_inode_table(struct super_block *sb,
@@ -95,7 +95,7 @@ ext4_fsblk_t ext4_inode_table(struct super_block *sb,
 {
         return le32_to_cpu(bg->bg_inode_table_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
+                 (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_table_hi) << 32 : 0);
 }
 
 __u32 ext4_free_blks_count(struct super_block *sb,
@@ -103,7 +103,7 @@ __u32 ext4_free_blks_count(struct super_block *sb,
 {
         return le16_to_cpu(bg->bg_free_blocks_count_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (__u32)le16_to_cpu(bg->bg_free_blocks_count_hi) << 16 : 0);
+                 (__u32)le16_to_cpu(bg->bg_free_blocks_count_hi) << 16 : 0);
 }
 
 __u32 ext4_free_inodes_count(struct super_block *sb,
@@ -111,7 +111,7 @@ __u32 ext4_free_inodes_count(struct super_block *sb,
 {
         return le16_to_cpu(bg->bg_free_inodes_count_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (__u32)le16_to_cpu(bg->bg_free_inodes_count_hi) << 16 : 0);
+                 (__u32)le16_to_cpu(bg->bg_free_inodes_count_hi) << 16 : 0);
 }
 
 __u32 ext4_used_dirs_count(struct super_block *sb,
@@ -119,7 +119,7 @@ __u32 ext4_used_dirs_count(struct super_block *sb,
 {
         return le16_to_cpu(bg->bg_used_dirs_count_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (__u32)le16_to_cpu(bg->bg_used_dirs_count_hi) << 16 : 0);
+                 (__u32)le16_to_cpu(bg->bg_used_dirs_count_hi) << 16 : 0);
 }
 
 __u32 ext4_itable_unused_count(struct super_block *sb,
@@ -127,7 +127,7 @@ __u32 ext4_itable_unused_count(struct super_block *sb,
 {
         return le16_to_cpu(bg->bg_itable_unused_lo) |
                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
-                (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0);
+                 (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0);
 }
 
 void ext4_block_bitmap_set(struct super_block *sb,
@@ -207,8 +207,7 @@ handle_t *ext4_journal_start_sb(struct super_block *sb, int nblocks)
         journal = EXT4_SB(sb)->s_journal;
         if (journal) {
                 if (is_journal_aborted(journal)) {
-                        ext4_abort(sb, __func__,
-                                   "Detected aborted journal");
+                        ext4_abort(sb, __func__, "Detected aborted journal");
                         return ERR_PTR(-EROFS);
                 }
                 return jbd2_journal_start(journal, nblocks);
@@ -436,7 +435,7 @@ void ext4_warning(struct super_block *sb, const char *function,
 }
 
 void ext4_grp_locked_error(struct super_block *sb, ext4_group_t grp,
-                                const char *function, const char *fmt, ...)
+                           const char *function, const char *fmt, ...)
 __releases(bitlock)
 __acquires(bitlock)
 {
@@ -472,7 +471,6 @@ __acquires(bitlock)
         return;
 }
 
-
 void ext4_update_dynamic_rev(struct super_block *sb)
 {
         struct ext4_super_block *es = EXT4_SB(sb)->s_es;
@@ -638,7 +636,6 @@ static void ext4_put_super(struct super_block *sb)
         lock_kernel();
         kfree(sbi->s_blockgroup_lock);
         kfree(sbi);
-        return;
 }
 
 static struct kmem_cache *ext4_inode_cachep;
@@ -653,6 +650,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
         ei = kmem_cache_alloc(ext4_inode_cachep, GFP_NOFS);
         if (!ei)
                 return NULL;
+
 #ifdef CONFIG_EXT4_FS_POSIX_ACL
         ei->i_acl = EXT4_ACL_NOT_CACHED;
         ei->i_default_acl = EXT4_ACL_NOT_CACHED;
@@ -673,6 +671,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
         ei->i_allocated_meta_blocks = 0;
         ei->i_delalloc_reserved_flag = 0;
         spin_lock_init(&(ei->i_block_reservation_lock));
+
         return &ei->vfs_inode;
 }
 
@@ -879,12 +878,12 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
                 seq_puts(seq, ",noauto_da_alloc");
 
         ext4_show_quota_options(seq, sb);
+
         return 0;
 }
 
-
 static struct inode *ext4_nfs_get_inode(struct super_block *sb,
-                u64 ino, u32 generation)
+                                        u64 ino, u32 generation)
 {
         struct inode *inode;
 
@@ -913,14 +912,14 @@ static struct inode *ext4_nfs_get_inode(struct super_block *sb,
 }
 
 static struct dentry *ext4_fh_to_dentry(struct super_block *sb, struct fid *fid,
-                int fh_len, int fh_type)
+                                        int fh_len, int fh_type)
 {
         return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
                                     ext4_nfs_get_inode);
 }
 
 static struct dentry *ext4_fh_to_parent(struct super_block *sb, struct fid *fid,
-                int fh_len, int fh_type)
+                                        int fh_len, int fh_type)
 {
         return generic_fh_to_parent(sb, fid, fh_len, fh_type,
                                     ext4_nfs_get_inode);
@@ -932,7 +931,8 @@ static struct dentry *ext4_fh_to_parent(struct super_block *sb, struct fid *fid,
  * which would prevent try_to_free_buffers() from freeing them, we must use
  * jbd2 layer's try_to_free_buffers() function to release them.
  */
-static int bdev_try_to_free_page(struct super_block *sb, struct page *page, gfp_t wait)
+static int bdev_try_to_free_page(struct super_block *sb, struct page *page,
+                                 gfp_t wait)
 {
         journal_t *journal = EXT4_SB(sb)->s_journal;
 
@@ -1133,8 +1133,9 @@ static ext4_fsblk_t get_sb_block(void **data)
 
         if (!options || strncmp(options, "sb=", 3) != 0)
                 return 1;       /* Default location */
+
         options += 3;
-        /*todo: use simple_strtoll with >32bit ext4 */
+        /* TODO: use simple_strtoll with >32bit ext4 */
         sb_block = simple_strtoul(options, &options, 0);
         if (*options && *options != ',') {
                 printk(KERN_ERR "EXT4-fs: Invalid sb specification: %s\n",
@@ -1144,6 +1145,7 @@ static ext4_fsblk_t get_sb_block(void **data)
         if (*options == ',')
                 options++;
         *data = (void *) options;
+
         return sb_block;
 }
 
@@ -1626,7 +1628,7 @@ static int ext4_setup_super(struct super_block *sb, struct ext4_super_block *es,
                 printk(KERN_WARNING
                        "EXT4-fs warning: checktime reached, "
                        "running e2fsck is recommended\n");
-        if (!sbi->s_journal) 
+        if (!sbi->s_journal)
                 es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
         if (!(__s16) le16_to_cpu(es->s_max_mnt_count))
                 es->s_max_mnt_count = cpu_to_le16(EXT4_DFL_MAX_MNT_COUNT);
@@ -1810,7 +1812,7 @@ static int ext4_check_descriptors(struct super_block *sb)
         }
 
         ext4_free_blocks_count_set(sbi->s_es, ext4_count_free_blocks(sb));
-        sbi->s_es->s_free_inodes_count = cpu_to_le32(ext4_count_free_inodes(sb));
+        sbi->s_es->s_free_inodes_count =cpu_to_le32(ext4_count_free_inodes(sb));
         return 1;
 }
 
@@ -1926,6 +1928,7 @@ static void ext4_orphan_cleanup(struct super_block *sb,
 #endif
         sb->s_flags = s_flags; /* Restore MS_RDONLY status */
 }
+
 /*
  * Maximal extent format file size.
  * Resulting logical blkno at s_maxbytes must fit in our on-disk
@@ -1976,19 +1979,19 @@ static loff_t ext4_max_bitmap_size(int bits, int has_huge_files)
         loff_t res = EXT4_NDIR_BLOCKS;
         int meta_blocks;
         loff_t upper_limit;
-        /* This is calculated to be the largest file size for a
-         * dense, bitmapped file such that the total number of
-         * sectors in the file, including data and all indirect blocks,
-         * does not exceed 2^48 -1
-         * __u32 i_blocks_lo and _u16 i_blocks_high representing the
-         * total number of  512 bytes blocks of the file
+        /* This is calculated to be the largest file size for a dense, block
+         * mapped file such that the file's total number of 512-byte sectors,
+         * including data and all indirect blocks, does not exceed (2^48 - 1).
+         *
+         * __u32 i_blocks_lo and _u16 i_blocks_high represent the total
+         * number of 512-byte sectors of the file.
          */
 
         if (!has_huge_files || sizeof(blkcnt_t) < sizeof(u64)) {
                 /*
-                 * !has_huge_files or CONFIG_LBD is not enabled
-                 * implies the inode i_block represent total blocks in
-                 * 512 bytes 32 == size of vfs inode i_blocks * 8
+                 * !has_huge_files or CONFIG_LBD not enabled implies that
+                 * the inode i_block field represents total file blocks in
+                 * 2^32 512-byte sectors == size of vfs inode i_blocks * 8
                  */
                 upper_limit = (1LL << 32) - 1;
 
@@ -2030,7 +2033,7 @@ static loff_t ext4_max_bitmap_size(int bits, int has_huge_files)
 }
 
 static ext4_fsblk_t descriptor_loc(struct super_block *sb,
-                                ext4_fsblk_t logical_sb_block, int nr)
+                                   ext4_fsblk_t logical_sb_block, int nr)
 {
         struct ext4_sb_info *sbi = EXT4_SB(sb);
         ext4_group_t bg, first_meta_bg;
@@ -2044,6 +2047,7 @@ static ext4_fsblk_t descriptor_loc(struct super_block *sb,
         bg = sbi->s_desc_per_block * nr;
         if (ext4_bg_has_super(sb, bg))
                 has_super = 1;
+
         return (has_super + ext4_group_first_block_no(sb, bg));
 }
 
@@ -2148,7 +2152,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
 }
 
 static ssize_t sbi_ui_show(struct ext4_attr *a,
-                                struct ext4_sb_info *sbi, char *buf)
+                           struct ext4_sb_info *sbi, char *buf)
 {
         unsigned int *ui = (unsigned int *) (((char *) sbi) + a->offset);
 
@@ -2253,7 +2257,6 @@ static struct kobj_type ext4_ktype = {
 static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                                 __releases(kernel_lock)
                                 __acquires(kernel_lock)
-
 {
         struct buffer_head *bh;
         struct ext4_super_block *es = NULL;
@@ -2379,7 +2382,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
          */
         set_opt(sbi->s_mount_opt, DELALLOC);
 
-
         if (!parse_options((char *) data, sb, &journal_devnum,
                            &journal_ioprio, NULL, 0))
                 goto failed_mount;
@@ -2442,7 +2444,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
         }
 
         if (sb->s_blocksize != blocksize) {
-
                 /* Validate the filesystem blocksize */
                 if (!sb_set_blocksize(sb, blocksize)) {
                         printk(KERN_ERR "EXT4-fs: bad block size %d.\n",
@@ -2489,6 +2490,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                 if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE)
                         sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2);
         }
+
         sbi->s_desc_size = le16_to_cpu(es->s_desc_size);
         if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_64BIT)) {
                 if (sbi->s_desc_size < EXT4_MIN_DESC_SIZE_64BIT ||
@@ -2501,10 +2503,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                 }
         } else
                 sbi->s_desc_size = EXT4_MIN_DESC_SIZE;
+
         sbi->s_blocks_per_group = le32_to_cpu(es->s_blocks_per_group);
         sbi->s_inodes_per_group = le32_to_cpu(es->s_inodes_per_group);
         if (EXT4_INODE_SIZE(sb) == 0 || EXT4_INODES_PER_GROUP(sb) == 0)
                 goto cantfind_ext4;
+
         sbi->s_inodes_per_block = blocksize / EXT4_INODE_SIZE(sb);
         if (sbi->s_inodes_per_block == 0)
                 goto cantfind_ext4;
@@ -2515,6 +2519,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
         sbi->s_mount_state = le16_to_cpu(es->s_state);
         sbi->s_addr_per_block_bits = ilog2(EXT4_ADDR_PER_BLOCK(sb));
         sbi->s_desc_per_block_bits = ilog2(EXT4_DESC_PER_BLOCK(sb));
+
         for (i = 0; i < 4; i++)
                 sbi->s_hash_seed[i] = le32_to_cpu(es->s_hash_seed[i]);
         sbi->s_def_hash_version = es->s_def_hash_version;
@@ -2566,12 +2571,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                 goto failed_mount;
         }
 
-        /*
-         * It makes no sense for the first data block to be beyond the end
-         * of the filesystem.
-         */
-        if (le32_to_cpu(es->s_first_data_block) >= ext4_blocks_count(es)) {
-                printk(KERN_WARNING "EXT4-fs: bad geometry: first data"
+        /*
+         * It makes no sense for the first data block to be beyond the end
+         * of the filesystem.
+         */
+        if (le32_to_cpu(es->s_first_data_block) >= ext4_blocks_count(es)) {
+                printk(KERN_WARNING "EXT4-fs: bad geometry: first data"
                        "block %u is beyond end of filesystem (%llu)\n",
                        le32_to_cpu(es->s_first_data_block),
                        ext4_blocks_count(es));
@@ -3082,6 +3087,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
         EXT4_SB(sb)->journal_bdev = bdev;
         ext4_init_journal_params(sb, journal);
         return journal;
+
 out_journal:
         jbd2_journal_destroy(journal);
 out_bdev:
@@ -3116,7 +3122,6 @@ static int ext4_load_journal(struct super_block *sb,
          * crash?  For recovery, we need to check in advance whether we
          * can get read-write access to the device.
          */
-
         if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
                 if (sb->s_flags & MS_RDONLY) {
                         printk(KERN_INFO "EXT4-fs: INFO: recovery "
@@ -3234,7 +3239,6 @@ static int ext4_commit_super(struct super_block *sb, int sync)
         return error;
 }
 
-
 /*
  * Have we just finished recovery?  If so, and if we are mounting (or
  * remounting) the filesystem readonly, then we will end up with a
@@ -3485,8 +3489,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 
                         /*
                          * Make sure the group descriptor checksums
-                         * are sane.  If they aren't, refuse to
-                         * remount r/w.
+                         * are sane.  If they aren't, refuse to remount r/w.
                          */
                         for (g = 0; g < sbi->s_groups_count; g++) {
                                 struct ext4_group_desc *gdp =
@@ -3545,6 +3548,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
                         kfree(old_opts.s_qf_names[i]);
 #endif
         return 0;
+
 restore_opts:
         sb->s_flags = old_sb_flags;
         sbi->s_mount_opt = old_opts.s_mount_opt;
@@ -3628,11 +3632,12 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
                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;
 }
 
-/* Helper function for writing quotas on sync - we need to start transaction before quota file
- * is locked for write. Otherwise the are possible deadlocks:
+/* Helper function for writing quotas on sync - we need to start transaction
+ * before quota file is locked for write. Otherwise the are possible deadlocks:
  * Process 1                         Process 2
  * ext4_create()                     quota_sync()
  *   jbd2_journal_start()                  write_dquot()
@@ -3656,7 +3661,7 @@ static int ext4_write_dquot(struct dquot *dquot)
 
         inode = dquot_to_inode(dquot);
         handle = ext4_journal_start(inode,
-                                        EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
+                                    EXT4_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
         ret = dquot_commit(dquot);
@@ -3672,7 +3677,7 @@ static int ext4_acquire_dquot(struct dquot *dquot)
         handle_t *handle;
 
         handle = ext4_journal_start(dquot_to_inode(dquot),
-                                        EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb));
+                                    EXT4_QUOTA_INIT_BLOCKS(dquot->dq_sb));
         if (IS_ERR(handle))
                 return PTR_ERR(handle);
         ret = dquot_acquire(dquot);
@@ -3688,7 +3693,7 @@ static int ext4_release_dquot(struct dquot *dquot)
         handle_t *handle;
 
         handle = ext4_journal_start(dquot_to_inode(dquot),
-                                        EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb));
+                                    EXT4_QUOTA_DEL_BLOCKS(dquot->dq_sb));
         if (IS_ERR(handle)) {
                 /* Release dquot anyway to avoid endless cycle in dqput() */
                 dquot_release(dquot);
@@ -3736,7 +3741,7 @@ static int ext4_write_info(struct super_block *sb, int type)
 static int ext4_quota_on_mount(struct super_block *sb, int type)
 {
         return vfs_quota_on_mount(sb, EXT4_SB(sb)->s_qf_names[type],
-                        EXT4_SB(sb)->s_jquota_fmt, type);
+                                  EXT4_SB(sb)->s_jquota_fmt, type);
 }
 
 /*
@@ -3907,10 +3912,10 @@ out:
 
 #endif
 
-static int ext4_get_sb(struct file_system_type *fs_type,
-        int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static int ext4_get_sb(struct file_system_type *fs_type, int flags,
+                       const char *dev_name, void *data, struct vfsmount *mnt)
 {
-        return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt);
+        return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt);
 }
 
 static struct file_system_type ext4_fs_type = {
@@ -3922,14 +3927,14 @@ static struct file_system_type ext4_fs_type = {
 };
 
 #ifdef CONFIG_EXT4DEV_COMPAT
-static int ext4dev_get_sb(struct file_system_type *fs_type,
-        int flags, const char *dev_name, void *data, struct vfsmount *mnt)
+static int ext4dev_get_sb(struct file_system_type *fs_type, int flags,
+                          const char *dev_name, void *data,struct vfsmount *mnt)
 {
         printk(KERN_WARNING "EXT4-fs: Update your userspace programs "
                "to mount using ext4\n");
         printk(KERN_WARNING "EXT4-fs: ext4dev backwards compatibility "
                "will go away by 2.6.31\n");
-        return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super, mnt);
+        return get_sb_bdev(fs_type, flags, dev_name, data, ext4_fill_super,mnt);
 }
 
 static struct file_system_type ext4dev_fs_type = {