ldiskfs/kernel_patches/patches/ext4-misc-sles11.patch

   1 Index: linux-2.6.27.21-0.1/fs/ext4/ext4_jbd2.h
   2 ===================================================================
   3 --- linux-2.6.27.21-0.1.orig/fs/ext4/ext4_jbd2.h        2009-07-07 14:47:19.000000000 +0530
   4 +++ linux-2.6.27.21-0.1/fs/ext4/ext4_jbd2.h     2009-07-07 14:47:22.000000000 +0530
   5 @@ -35,6 +35,9 @@
   6         (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)   \
   7                 || test_opt(sb, EXTENTS) ? 27U : 8U)
   8
   9 +/* Indicate that EXT4_SINGLEDATA_TRANS_BLOCKS takes the sb as argument */
  10 +#define EXT4_SINGLEDATA_TRANS_BLOCKS_HAS_SB
  11 +
  12  /* Extended attribute operations touch at most two data buffers,
  13   * two bitmap buffers, and two group summaries, in addition to the inode
  14   * and the superblock, which are already accounted for. */
  15 Index: linux-2.6.27.21-0.1/fs/ext4/extents.c
  16 ===================================================================
  17 --- linux-2.6.27.21-0.1.orig/fs/ext4/extents.c  2009-07-07 14:47:19.000000000 +0530
  18 +++ linux-2.6.27.21-0.1/fs/ext4/extents.c       2009-07-07 14:48:03.000000000 +0530
  19 @@ -48,7 +48,7 @@
  20   * ext_pblock:
  21   * combine low and high parts of physical block number into ext4_fsblk_t
  22   */
  23 -static ext4_fsblk_t ext_pblock(struct ext4_extent *ex)
  24 +ext4_fsblk_t ext_pblock(struct ext4_extent *ex)
  25  {
  26         ext4_fsblk_t block;
  27
  28 @@ -58,6 +58,17 @@
  29  }
  30
  31  /*
  32 + * ext4_ext_store_pblock:
  33 + * stores a large physical block number into an extent struct,
  34 + * breaking it into parts
  35 + */
  36 +void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb)
  37 +{
  38 +       ex->ee_start_lo = cpu_to_le32((unsigned long) (pb & 0xffffffff));
  39 +       ex->ee_start_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
  40 +}
  41 +
  42 +/*
  43   * idx_pblock:
  44   * combine low and high parts of a leaf physical block number into ext4_fsblk_t
  45   */
  46 @@ -71,17 +82,6 @@
  47  }
  48
  49  /*
  50 - * ext4_ext_store_pblock:
  51 - * stores a large physical block number into an extent struct,
  52 - * breaking it into parts
  53 - */
  54 -void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb)
  55 -{
  56 -       ex->ee_start_lo = cpu_to_le32((unsigned long) (pb & 0xffffffff));
  57 -       ex->ee_start_hi = cpu_to_le16((unsigned long) ((pb >> 31) >> 1) & 0xffff);
  58 -}
  59 -
  60 -/*
  61   * ext4_idx_store_pblock:
  62   * stores a large physical block number into an index struct,
  63   * breaking it into parts
  64 @@ -1852,6 +1852,56 @@
  65  }
  66
  67  /*
  68 + * This routine returns max. credits extent tree can consume.
  69 + * It should be OK for low-performance paths like ->writepage()
  70 + * To allow many writing process to fit a single transaction,
  71 + * caller should calculate credits under truncate_mutex and
  72 + * pass actual path.
  73 + */
  74 +int ext4_ext_calc_credits_for_insert(struct inode *inode,
  75 +                                   struct ext4_ext_path *path)
  76 +{
  77 +       int depth, needed;
  78 +
  79 +       if (path) {
  80 +               /* probably there is space in leaf? */
  81 +               depth = ext_depth(inode);
  82 +               if (le16_to_cpu(path[depth].p_hdr->eh_entries)
  83 +                               < le16_to_cpu(path[depth].p_hdr->eh_max))
  84 +                       return 1;
  85 +       }
  86 +
  87 +       /*
  88 +        * given 32bit logical block (4294967296 blocks), max. tree
  89 +        * can be 4 levels in depth -- 4 * 340^4 == 53453440000.
  90 +        * let's also add one more level for imbalance.
  91 +        */
  92 +       depth = 5;
  93 +
  94 +       /* allocation of new data block(s) */
  95 +       needed = 2;
  96 +
  97 +       /*
  98 +        * tree can be full, so it'd need to grow in depth:
  99 +        * we need one credit to modify old root, credits for
 100 +        * new root will be added in split accounting
 101 +        */
 102 +       needed += 1;
 103 +
 104 +       /*
 105 +        * Index split can happen, we'd need:
 106 +        *    allocate intermediate indexes (bitmap + group)
 107 +        *  + change two blocks at each level, but root (already included)
 108 +        */
 109 +       needed += (depth * 2) + (depth * 2);
 110 +
 111 +       /* any allocation modifies superblock */
 112 +       needed += 1;
 113 +
 114 +       return needed;
 115 +}
 116 +
 117 +/*
 118   * ext4_ext_calc_credits_for_single_extent:
 119   * This routine returns max. credits that needed to insert an extent
 120   * to the extent tree.
 121 @@ -3171,3 +3221,15 @@
 122
 123         return error;
 124  }
 125 +
 126 +EXPORT_SYMBOL(ext4_ext_store_pblock);
 127 +EXPORT_SYMBOL(ext4_ext_search_right);
 128 +EXPORT_SYMBOL(ext4_ext_search_left);
 129 +EXPORT_SYMBOL(ext_pblock);
 130 +EXPORT_SYMBOL(ext4_ext_insert_extent);
 131 +EXPORT_SYMBOL(ext4_mb_new_blocks);
 132 +EXPORT_SYMBOL(ext4_ext_calc_credits_for_insert);
 133 +EXPORT_SYMBOL(ext4_mark_inode_dirty);
 134 +EXPORT_SYMBOL(ext4_ext_find_extent);
 135 +EXPORT_SYMBOL(ext4_ext_drop_refs);
 136 +
 137 Index: linux-2.6.27.21-0.1/fs/ext4/ext4_extents.h
 138 ===================================================================
 139 --- linux-2.6.27.21-0.1.orig/fs/ext4/ext4_extents.h     2009-07-07 14:47:19.000000000 +0530
 140 +++ linux-2.6.27.21-0.1/fs/ext4/ext4_extents.h  2009-07-07 14:47:22.000000000 +0530
 141 @@ -59,6 +59,11 @@
 142   */
 143  #define EXT_STATS_
 144
 145 +/*
 146 + * define EXT4_ALLOC_NEEDED to 0 since block bitmap, group desc. and sb
 147 + * are now accounted in ext4_ext_calc_credits_for_insert()
 148 + */
 149 +#define EXT4_ALLOC_NEEDED 0
 150
 151  /*
 152   * ext4_inode has i_block array (60 bytes total).
 153 @@ -124,6 +129,7 @@
 154  #define EXT4_EXT_CACHE_GAP     1
 155  #define EXT4_EXT_CACHE_EXTENT  2
 156
 157 +#define EXT4_EXT_HAS_NO_TREE  /* ext4_extents_tree struct is not used*/
 158
 159  #define EXT_MAX_BLOCK  0xffffffff
 160
 161 @@ -223,10 +229,14 @@
 162                 (le16_to_cpu(ext->ee_len) - EXT_INIT_MAX_LEN));
 163  }
 164
 165 +extern ext4_fsblk_t ext_pblock(struct ext4_extent *ex);
 166 +extern void ext4_ext_store_pblock(struct ext4_extent *ex, ext4_fsblk_t pb);
 167  extern int ext4_ext_calc_metadata_amount(struct inode *inode, int blocks);
 168  extern ext4_fsblk_t idx_pblock(struct ext4_extent_idx *);
 169  extern void ext4_ext_store_pblock(struct ext4_extent *, ext4_fsblk_t);
 170  extern int ext4_extent_tree_init(handle_t *, struct inode *);
 171 +extern int ext4_ext_calc_credits_for_insert(struct inode *,
 172 +                                           struct ext4_ext_path *);
 173  extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode,
 174                                                    int num,
 175                                                    struct ext4_ext_path *path);
 176 Index: linux-2.6.27.21-0.1/fs/ext4/mballoc.c
 177 ===================================================================
 178 --- linux-2.6.27.21-0.1.orig/fs/ext4/mballoc.c  2009-07-07 14:47:19.000000000 +0530
 179 +++ linux-2.6.27.21-0.1/fs/ext4/mballoc.c       2009-07-07 14:47:22.000000000 +0530
 180 @@ -4355,6 +4355,7 @@
 181                 kmem_cache_free(ext4_ac_cachep, ac);
 182  }
 183 +EXPORT_SYMBOL(ext4_discard_preallocations);
 184
 185  /*
 186   * finds all preallocated spaces and return blocks being freed to them
 187   * if preallocated space becomes full (no block is used from the space)
 188 @@ -5177,3 +5184,6 @@
 189                 kmem_cache_free(ext4_ac_cachep, ac);
 190         return;
 191  }
 192 +
 193 +EXPORT_SYMBOL(ext4_free_blocks);
 194 +
 195 Index: linux-2.6.27.21-0.1/fs/ext4/super.c
 196 ===================================================================
 197 --- linux-2.6.27.21-0.1.orig/fs/ext4/super.c    2009-07-07 14:47:19.000000000 +0530
 198 +++ linux-2.6.27.21-0.1/fs/ext4/super.c 2009-07-07 14:48:53.000000000 +0530
 199 @@ -91,6 +91,7 @@
 200                 (EXT4_DESC_SIZE(sb) >= EXT4_MIN_DESC_SIZE_64BIT ?
 201                 (ext4_fsblk_t)le32_to_cpu(bg->bg_inode_bitmap_hi) << 32 : 0);
 202  }
 203 +EXPORT_SYMBOL(ext4_inode_bitmap);
 204
 205  ext4_fsblk_t ext4_inode_table(struct super_block *sb,
 206                               struct ext4_group_desc *bg)
 207 @@ -1286,6 +1287,7 @@
 208         Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_quota, Opt_noquota,
 209         Opt_ignore, Opt_barrier, Opt_err, Opt_resize, Opt_usrquota,
 210         Opt_grpquota, Opt_extents, Opt_noextents, Opt_i_version,
 211 +       Opt_mballoc,
 212         Opt_stripe, Opt_delalloc, Opt_nodelalloc,
 213         Opt_inode_readahead_blks, Opt_bigendian_extents,
 214         Opt_iopen, Opt_noiopen, Opt_iopen_nopriv,
 215 @@ -1346,6 +1348,7 @@
 216         {Opt_i_version, "i_version"},
 217         {Opt_stripe, "stripe=%u"},
 218         {Opt_resize, "resize"},
 219 +       {Opt_mballoc, "mballoc"},
 220         {Opt_delalloc, "delalloc"},
 221         {Opt_nodelalloc, "nodelalloc"},
 222         {Opt_inode_readahead_blks, "inode_readahead_blks=%u"},
 223 @@ -1768,6 +1771,8 @@
 224                 case Opt_bigendian_extents:
 225                         bigendian_extents = 1;
 226                         break;
 227 +               case Opt_mballoc:
 228 +                       break;
 229                 default:
 230                         printk(KERN_ERR
 231                                "EXT4-fs: Unrecognized mount option \"%s\" "
 232 @@ -4094,7 +4099,7 @@
 233         .kill_sb        = kill_block_super,
 234         .fs_flags       = FS_REQUIRES_DEV,
 235  };
 236 -MODULE_ALIAS("ext4dev");
 237 +MODULE_ALIAS("ext4");
 238
 239  static int __init init_ext4_fs(void)
 240  {
 241 Index: linux-2.6.27.21-0.1/fs/ext4/ext4_jbd2.c
 242 ===================================================================
 243 --- linux-2.6.27.21-0.1.orig/fs/ext4/ext4_jbd2.c        2009-07-07 14:47:19.000000000 +0530
 244 +++ linux-2.6.27.21-0.1/fs/ext4/ext4_jbd2.c     2009-07-07 14:47:22.000000000 +0530
 245 @@ -21,6 +21,7 @@
 246                 ext4_journal_abort_handle(where, __func__, bh, handle, err);
 247         return err;
 248  }
 249 +EXPORT_SYMBOL(__ext4_journal_get_write_access);
 250
 251  int __ext4_journal_forget(const char *where, handle_t *handle,
 252                                 struct buffer_head *bh)
 253 @@ -57,3 +58,4 @@
 254                 ext4_journal_abort_handle(where, __func__, bh, handle, err);
 255         return err;
 256  }
 257 +EXPORT_SYMBOL(__ext4_journal_dirty_metadata);
 258 Index: linux-2.6.27.21-0.1/fs/ext4/ext4.h
 259 ===================================================================
 260 --- linux-2.6.27.21-0.1.orig/fs/ext4/ext4.h     2009-07-07 14:47:19.000000000 +0530
 261 +++ linux-2.6.27.21-0.1/fs/ext4/ext4.h  2009-07-07 14:47:22.000000000 +0530
 262 @@ -26,6 +26,9 @@
 263   * The fourth extended filesystem constants/structures
 264   */
 265
 266 +/* Has been moved to linux/magic.h but we need it for Lustre */
 267 +#define EXT4_SUPER_MAGIC       0xEF53
 268 +
 269  /*
 270   * Define EXT4FS_DEBUG to produce debug messages
 271   */
 272 @@ -400,6 +403,8 @@
 273         __le32  i_version_hi;   /* high 32 bits for 64-bit version */
 274  };
 275
 276 +/* SLES11 kernel already has 64-bit inode->i_version field */
 277 +#define HAVE_DISK_INODE_VERSION
 278
 279  #define EXT4_EPOCH_BITS 2
 280  #define EXT4_EPOCH_MASK ((1 << EXT4_EPOCH_BITS) - 1)
 281 @@ -1123,6 +1128,8 @@
 282  extern int ext4_mb_get_buddy_cache_lock(struct super_block *, ext4_group_t);
 283  extern void ext4_mb_put_buddy_cache_lock(struct super_block *,
 284                                                 ext4_group_t, int);
 285 +extern void ext4_mb_discard_inode_preallocations(struct inode *);
 286 +
 287  /* inode.c */
 288  int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
 289                 struct buffer_head *bh, ext4_fsblk_t blocknr);
 290 Index: linux-2.6.27.21-0.1/fs/ext4/inode.c
 291 ===================================================================
 292 --- linux-2.6.27.21-0.1.orig/fs/ext4/inode.c    2009-07-07 14:47:19.000000000 +0530
 293 +++ linux-2.6.27.21-0.1/fs/ext4/inode.c 2009-07-07 14:47:22.000000000 +0530
 294 @@ -4240,6 +4240,7 @@
 295         iget_failed(inode);
 296         return ERR_PTR(ret);
 297  }
 298 +EXPORT_SYMBOL(ext4_iget);
 299
 300  static int ext4_inode_blocks_set(handle_t *handle,
 301                                 struct ext4_inode *raw_inode,