ldiskfs/kernel_patches/patches/rhel6.4/ext4-misc.patch

   1 Index: linux-stage/fs/ext4/ext4.h
   2 ===================================================================
   3 --- linux-stage.orig/fs/ext4/ext4.h
   4 +++ linux-stage/fs/ext4/ext4.h
   5 @@ -1256,6 +1256,9 @@ EXT4_INODE_BIT_FNS(state, state_flags)
   6
   7  #define NEXT_ORPHAN(inode) EXT4_I(inode)->i_dtime
   8
   9 +/* Has been moved to linux/magic.h but we need it for Lustre */
  10 +#define EXT4_SUPER_MAGIC       0xEF53
  11 +
  12  /*
  13   * Codes for operating systems
  14   */
  15 @@ -1757,6 +1760,9 @@ extern void ext4_add_groupblocks(handle_
  16                                 ext4_fsblk_t block, unsigned long count);
  17  extern int ext4_trim_fs(struct super_block *, struct fstrim_range *);
  18
  19 +extern void ext4_mb_discard_inode_preallocations(struct inode *);
  20 +
  21 +
  22  /* inode.c */
  23  int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
  24                 struct buffer_head *bh, ext4_fsblk_t blocknr);
  25 Index: linux-stage/fs/ext4/ext4_extents.h
  26 ===================================================================
  27 --- linux-stage.orig/fs/ext4/ext4_extents.h
  28 +++ linux-stage/fs/ext4/ext4_extents.h
  29 @@ -58,6 +58,12 @@
  30   */
  31  #define EXT_STATS_
  32
  33 +/*
  34 + * define EXT4_ALLOC_NEEDED to 0 since block bitmap, group desc. and sb
  35 + * are now accounted in ext4_ext_calc_credits_for_insert()
  36 + */
  37 +#define EXT4_ALLOC_NEEDED 0
  38 +#define HAVE_EXT_PREPARE_CB_EXTENT
  39
  40  /*
  41   * ext4_inode has i_block array (60 bytes total).
  42 @@ -291,6 +297,8 @@ extern int ext4_extent_tree_init(handle_
  43  extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode,
  44                                                    int num,
  45                                                    struct ext4_ext_path *path);
  46 +extern int ext4_ext_calc_credits_for_insert(struct inode *,
  47 +                                           struct ext4_ext_path *);
  48  extern int ext4_can_extents_be_merged(struct inode *inode,
  49                                       struct ext4_extent *ex1,
  50                                       struct ext4_extent *ex2);
  51 Index: linux-stage/fs/ext4/ext4_jbd2.c
  52 ===================================================================
  53 --- linux-stage.orig/fs/ext4/ext4_jbd2.c
  54 +++ linux-stage/fs/ext4/ext4_jbd2.c
  55 @@ -31,6 +31,7 @@ int __ext4_journal_get_write_access(cons
  56         }
  57         return err;
  58  }
  59 +EXPORT_SYMBOL(__ext4_journal_get_write_access);
  60
  61  int __ext4_journal_forget(const char *where, handle_t *handle,
  62                                 struct buffer_head *bh)
  63 @@ -107,3 +108,4 @@ int __ext4_handle_dirty_metadata(const c
  64         }
  65         return err;
  66  }
  67 +EXPORT_SYMBOL(__ext4_handle_dirty_metadata);
  68 Index: linux-stage/fs/ext4/extents.c
  69 ===================================================================
  70 --- linux-stage.orig/fs/ext4/extents.c
  71 +++ linux-stage/fs/ext4/extents.c
  72 @@ -2200,6 +2200,55 @@ int ext4_ext_calc_credits_for_single_ext
  73  }
  74
  75  /*
  76 + * This routine returns max. credits extent tree can consume.
  77 + * It should be OK for low-performance paths like ->writepage()
  78 + * To allow many writing process to fit a single transaction,
  79 + * caller should calculate credits under truncate_mutex and
  80 + * pass actual path.
  81 + */
  82 +int ext4_ext_calc_credits_for_insert(struct inode *inode,
  83 +                                    struct ext4_ext_path *path)
  84 +{
  85 +       int depth, needed;
  86 +
  87 +       if (path) {
  88 +               /* probably there is space in leaf? */
  89 +               depth = path->p_depth;
  90 +               if (le16_to_cpu(path[depth].p_hdr->eh_entries)
  91 +                               < le16_to_cpu(path[depth].p_hdr->eh_max))
  92 +                       return 1;
  93 +       }
  94 +
  95 +       /*
  96 +        * given 32bit logical block (4294967296 blocks), max. tree
  97 +        * can be 4 levels in depth -- 4 * 340^4 == 53453440000.
  98 +        * let's also add one more level for imbalance.
  99 +        */
 100 +       depth = 5;
 101 +
 102 +       /* allocation of new data block(s) */
 103 +       needed = 2;
 104 +
 105 +       /*
 106 +        * tree can be full, so it'd need to grow in depth:
 107 +        * we need one credit to modify old root, credits for
 108 +        * new root will be added in split accounting
 109 +        */
 110 +       needed += 1;
 111 +       /*
 112 +        * Index split can happen, we'd need:
 113 +        *    allocate intermediate indexes (bitmap + group)
 114 +        *  + change two blocks at each level, but root (already included)
 115 +        */
 116 +       needed += (depth * 2) + (depth * 2);
 117 +
 118 +       /* any allocation modifies superblock */
 119 +       needed += 1;
 120 +
 121 +       return needed;
 122 +}
 123 +
 124 +/*
 125   * How many index/leaf blocks need to change/allocate to modify nrblocks?
 126   *
 127   * if nrblocks are fit in a single extent (chunk flag is 1), then
 128 @@ -4488,3 +4537,12 @@ int ext4_fiemap(struct inode *inode, str
 129         return error;
 130  }
 131
 132 +EXPORT_SYMBOL(ext4_ext_search_right);
 133 +EXPORT_SYMBOL(ext4_ext_search_left);
 134 +EXPORT_SYMBOL(ext4_ext_insert_extent);
 135 +EXPORT_SYMBOL(ext4_mb_new_blocks);
 136 +EXPORT_SYMBOL(ext4_ext_calc_credits_for_insert);
 137 +EXPORT_SYMBOL(ext4_mark_inode_dirty);
 138 +EXPORT_SYMBOL(ext4_ext_walk_space);
 139 +EXPORT_SYMBOL(ext4_ext_find_extent);
 140 +EXPORT_SYMBOL(ext4_ext_drop_refs);
 141 Index: linux-stage/fs/ext4/inode.c
 142 ===================================================================
 143 --- linux-stage.orig/fs/ext4/inode.c
 144 +++ linux-stage/fs/ext4/inode.c
 145 @@ -5549,6 +5549,7 @@ bad_inode:
 146         iget_failed(inode);
 147         return ERR_PTR(ret);
 148  }
 149 +EXPORT_SYMBOL(ext4_iget);
 150
 151  static int ext4_inode_blocks_set(handle_t *handle,
 152                                 struct ext4_inode *raw_inode,
 153 Index: linux-stage/fs/ext4/mballoc.c
 154 ===================================================================
 155 --- linux-stage.orig/fs/ext4/mballoc.c
 156 +++ linux-stage/fs/ext4/mballoc.c
 157 @@ -4031,6 +4031,7 @@ repeat:
 158         if (ac)
 159                 kmem_cache_free(ext4_ac_cachep, ac);
 160  }
 161 +EXPORT_SYMBOL(ext4_discard_preallocations);
 162
 163  /*
 164   * finds all preallocated spaces and return blocks being freed to them
 165 @@ -5189,3 +5190,6 @@ out:
 166         range->len = trimmed * sb->s_blocksize;
 167         return ret;
 168  }
 169 +
 170 +EXPORT_SYMBOL(ext4_free_blocks);
 171 +
 172 Index: linux-stage/fs/ext4/super.c
 173 ===================================================================
 174 --- linux-stage.orig/fs/ext4/super.c
 175 +++ linux-stage/fs/ext4/super.c
 176 @@ -137,6 +137,7 @@ __u32 ext4_itable_unused_count(struct su
 177                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
 178                  (__u32)le16_to_cpu(bg->bg_itable_unused_hi) << 16 : 0);
 179  }
 180 +EXPORT_SYMBOL(ext4_itable_unused_count);
 181
 182  void ext4_block_bitmap_set(struct super_block *sb,
 183                            struct ext4_group_desc *bg, ext4_fsblk_t blk)
 184 @@ -1176,11 +1177,14 @@ enum {
 185         Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
 186         Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
 187         Opt_noquota, Opt_ignore, Opt_barrier, Opt_nobarrier, Opt_err,
 188 +       Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
 189         Opt_resize, Opt_usrquota, Opt_grpquota, Opt_i_version,
 190         Opt_stripe, Opt_delalloc, Opt_nodelalloc,
 191         Opt_block_validity, Opt_noblock_validity,
 192         Opt_inode_readahead_blks, Opt_journal_ioprio,
 193 -       Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
 194 +       Opt_mballoc,
 195 +       Opt_discard, Opt_nodiscard,
 196 +       Opt_init_itable, Opt_noinit_itable,
 197  };
 198
 199  static const match_table_t tokens = {
 200 @@ -1232,6 +1236,9 @@ static const match_table_t tokens = {
 201         {Opt_noquota, "noquota"},
 202         {Opt_quota, "quota"},
 203         {Opt_usrquota, "usrquota"},
 204 +       {Opt_iopen, "iopen"},
 205 +       {Opt_noiopen, "noiopen"},
 206 +       {Opt_iopen_nopriv, "iopen_nopriv"},
 207         {Opt_barrier, "barrier=%u"},
 208         {Opt_barrier, "barrier"},
 209         {Opt_nobarrier, "nobarrier"},
 210 @@ -1247,6 +1254,7 @@ static const match_table_t tokens = {
 211         {Opt_auto_da_alloc, "auto_da_alloc=%u"},
 212         {Opt_auto_da_alloc, "auto_da_alloc"},
 213         {Opt_noauto_da_alloc, "noauto_da_alloc"},
 214 +       {Opt_mballoc, "mballoc"},
 215         {Opt_discard, "discard"},
 216         {Opt_nodiscard, "nodiscard"},
 217         {Opt_init_itable, "init_itable=%u"},
 218 @@ -1607,6 +1615,10 @@ set_qf_format:
 219                         else
 220                                 clear_opt(sbi->s_mount_opt, BARRIER);
 221                         break;
 222 +               case Opt_iopen:
 223 +               case Opt_noiopen:
 224 +               case Opt_iopen_nopriv:
 225 +                       break;
 226                 case Opt_ignore:
 227                         break;
 228                 case Opt_resize:
 229 @@ -1704,6 +1716,8 @@ set_qf_format:
 230                 case Opt_noinit_itable:
 231                         clear_opt(sbi->s_mount_opt, INIT_INODE_TABLE);
 232                         break;
 233 +               case Opt_mballoc:
 234 +                       break;
 235                 default:
 236                         ext4_msg(sb, KERN_ERR,
 237                                "Unrecognized mount option \"%s\" "