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[fs/lustre-release.git] / ldiskfs / kernel_patches / patches / ext3-inode-version-2.6-sles10.patch
diff --git a/ldiskfs/kernel_patches/patches/ext3-inode-version-2.6-sles10.patch b/ldiskfs/kernel_patches/patches/ext3-inode-version-2.6-sles10.patch
new file mode 100644 (file)
index 0000000..7b6b1b8
--- /dev/null
@@ -0,0 +1,426 @@
+Index: linux-2.6.16-sles10/fs/ext3/inode.c
+===================================================================
+--- linux-2.6.16-sles10.orig/fs/ext3/inode.c
++++ linux-2.6.16-sles10/fs/ext3/inode.c
+@@ -2558,6 +2558,13 @@ void ext3_read_inode(struct inode * inod
+       EXT3_INODE_GET_XTIME(i_atime, inode, raw_inode);
+       EXT3_EINODE_GET_XTIME(i_crtime, ei, raw_inode);
++      ei->i_fs_version = le32_to_cpu(raw_inode->i_disk_version);
++      if (EXT3_INODE_SIZE(inode->i_sb) > EXT3_GOOD_OLD_INODE_SIZE) {
++              if (EXT3_FITS_IN_INODE(raw_inode, ei, i_version_hi))
++                      ei->i_fs_version |= (__u64)(le32_to_cpu(raw_inode->i_version_hi))
++                                                                       << 32;
++      }
++
+       if (S_ISREG(inode->i_mode)) {
+               inode->i_op = &ext3_file_inode_operations;
+               inode->i_fop = &ext3_file_operations;
+@@ -2696,8 +2703,14 @@ static int ext3_do_update_inode(handle_t
+       } else for (block = 0; block < EXT3_N_BLOCKS; block++)
+               raw_inode->i_block[block] = ei->i_data[block];
+-      if (ei->i_extra_isize)
++      raw_inode->i_disk_version = cpu_to_le32(ei->i_fs_version);
++      if (ei->i_extra_isize) {
++              if (EXT3_FITS_IN_INODE(raw_inode, ei, i_version_hi)) {
++                      raw_inode->i_version_hi = cpu_to_le32(ei->i_fs_version
++                                                                      >> 32);
++              }
+               raw_inode->i_extra_isize = cpu_to_le16(ei->i_extra_isize);
++      }
+       BUFFER_TRACE(bh, "call ext3_journal_dirty_metadata");
+       rc = ext3_journal_dirty_metadata(handle, bh);
+@@ -2971,10 +2984,32 @@ ext3_reserve_inode_write(handle_t *handl
+ int ext3_mark_inode_dirty(handle_t *handle, struct inode *inode)
+ {
+       struct ext3_iloc iloc;
+-      int err;
++      int err, ret;
++      static int expand_message;
+       might_sleep();
+       err = ext3_reserve_inode_write(handle, inode, &iloc);
++      if (EXT3_I(inode)->i_extra_isize <
++          EXT3_SB(inode->i_sb)->s_want_extra_isize &&
++          !(EXT3_I(inode)->i_state & EXT3_STATE_NO_EXPAND)) {
++              /* We need extra buffer credits since we may write into EA block
++               * with this same handle */
++              if ((ext3_journal_extend(handle,
++                           EXT3_DATA_TRANS_BLOCKS(inode->i_sb))) == 0) {
++                      ret = ext3_expand_extra_isize(inode,
++                                      EXT3_SB(inode->i_sb)->s_want_extra_isize,
++                                      iloc, handle);
++                      if (ret) {
++                              EXT3_I(inode)->i_state |= EXT3_STATE_NO_EXPAND;
++                              if (!expand_message) {
++                                      ext3_warning(inode->i_sb, __FUNCTION__,
++                                      "Unable to expand inode %lu. Delete some"
++                                      " EAs or run e2fsck.", inode->i_ino);
++                                      expand_message = 1;
++                              }
++                      }
++              }
++      }
+       if (!err)
+               err = ext3_mark_iloc_dirty(handle, inode, &iloc);
+       return err;
+Index: linux-2.6.16-sles10/include/linux/ext3_fs.h
+===================================================================
+--- linux-2.6.16-sles10.orig/include/linux/ext3_fs.h
++++ linux-2.6.16-sles10/include/linux/ext3_fs.h
+@@ -205,6 +205,7 @@ struct ext3_group_desc
+ #define EXT3_STATE_JDATA              0x00000001 /* journaled data exists */
+ #define EXT3_STATE_NEW                        0x00000002 /* inode is newly created */
+ #define EXT3_STATE_XATTR              0x00000004 /* has in-inode xattrs */
++#define EXT3_STATE_NO_EXPAND          0x00000008 /* No space for expansion */
+ /* Used to pass group descriptor data when online resize is done */
+ struct ext3_new_group_input {
+@@ -281,7 +282,7 @@ struct ext3_inode {
+       __le32  i_flags;        /* File flags */
+       union {
+               struct {
+-                      __u32  l_i_reserved1;
++                      __u32  l_i_version;
+               } linux1;
+               struct {
+                       __u32  h_i_translator;
+@@ -326,6 +327,7 @@ struct ext3_inode {
+       __le32  i_atime_extra;  /* extra Access time      (nsec << 2 | epoch) */
+       __le32  i_crtime;       /* File Creation time */
+       __le32  i_crtime_extra; /* extra File Creation time (nsec << 2 | epoch) */
++      __le32  i_version_hi;   /* high 32 bits for 64-bit version */
+ };
+ #define i_size_high   i_dir_acl
+@@ -388,6 +390,8 @@ do {                                                                        \
+                                     raw_inode->xtime ## _extra);       \
+ } while (0)
++#define i_disk_version osd1.linux1.l_i_version
++
+ #if defined(__KERNEL__) || defined(__linux__)
+ #define i_reserved1   osd1.linux1.l_i_reserved1
+ #define i_frag                osd2.linux2.l_i_frag
+Index: linux-2.6.16-sles10/include/linux/ext3_fs_i.h
+===================================================================
+--- linux-2.6.16-sles10.orig/include/linux/ext3_fs_i.h
++++ linux-2.6.16-sles10/include/linux/ext3_fs_i.h
+@@ -20,6 +20,8 @@
+ #include <linux/rbtree.h>
+ #include <linux/seqlock.h>
++#define HAVE_DISK_INODE_VERSION
++
+ struct ext3_reserve_window {
+       __u32                   _rsv_start;     /* First byte reserved */
+       __u32                   _rsv_end;       /* Last byte reserved or 0 */
+@@ -138,6 +140,8 @@ struct ext3_inode_info {
+       __u32 i_cached_extent[4];
+       void *i_filterdata;
++
++      __u64 i_fs_version;
+ };
+ #endif        /* _LINUX_EXT3_FS_I */
+Index: linux-2.6.16-sles10/fs/ext3/xattr.c
+===================================================================
+--- linux-2.6.16-sles10.orig/fs/ext3/xattr.c
++++ linux-2.6.16-sles10/fs/ext3/xattr.c
+@@ -505,6 +505,20 @@ ext3_xattr_release_block(handle_t *handl
+       }
+ }
++static inline size_t ext3_xattr_free_space(struct ext3_xattr_entry *last,
++                                  size_t *min_offs, void *base, int *total)
++{
++      for (; !IS_LAST_ENTRY(last); last = EXT3_XATTR_NEXT(last)) {
++              *total += EXT3_XATTR_LEN(last->e_name_len);
++              if (!last->e_value_block && last->e_value_size) {
++                      size_t offs = le16_to_cpu(last->e_value_offs);
++                      if (offs < *min_offs)
++                              *min_offs = offs;
++              }
++      }
++      return (*min_offs - ((void *)last - base) - sizeof(__u32));
++}
++
+ struct ext3_xattr_info {
+       int name_index;
+       const char *name;
+@@ -1007,6 +1021,8 @@ ext3_xattr_set_handle(handle_t *handle, 
+       if (!error) {
+               ext3_xattr_update_super_block(handle, inode->i_sb);
+               inode->i_ctime = ext3_current_time(inode);
++              if (!value)
++                      EXT3_I(inode)->i_state &= ~EXT3_STATE_NO_EXPAND;
+               ext3_mark_inode_dirty(handle, inode);
+               /*
+                * The bh is consumed by ext3_mark_iloc_dirty, even with
+@@ -1059,6 +1075,249 @@ retry:
+       return error;
+ }
++static void ext3_xattr_shift_entries(struct ext3_xattr_entry *entry,
++                                   int value_offs_shift, void *to,
++                                   void *from, size_t n, int blocksize)
++{
++      struct ext3_xattr_entry *last = entry;
++      int new_offs;
++
++      /* Adjust the value offsets of the entries */
++      for (; !IS_LAST_ENTRY(last); last = EXT3_XATTR_NEXT(last)) {
++              if (!last->e_value_block && last->e_value_size) {
++                      new_offs = le16_to_cpu(last->e_value_offs) +
++                                                      value_offs_shift;
++                      BUG_ON(new_offs + le32_to_cpu(last->e_value_size) >
++                             blocksize);
++                      last->e_value_offs = cpu_to_le16(new_offs);
++              }
++      }
++      /* Shift the entries by n bytes */
++      memmove(to, from, n);
++}
++
++/* Expand an inode by new_extra_isize bytes.
++ * Returns 0 on success or negative error number on failure.
++ */
++int ext3_expand_extra_isize(struct inode *inode, int new_extra_isize,
++                          struct ext3_iloc iloc, handle_t *handle)
++{
++      struct ext3_inode *raw_inode;
++      struct ext3_xattr_ibody_header *header;
++      struct ext3_xattr_entry *entry, *last, *first;
++      struct buffer_head *bh = NULL;
++      struct ext3_xattr_ibody_find *is = NULL;
++      struct ext3_xattr_block_find *bs = NULL;
++      char *buffer = NULL, *b_entry_name = NULL;
++      size_t min_offs, free;
++      int total_ino, total_blk;
++      void *base, *start, *end;
++      int extra_isize = 0, error = 0, tried_min_extra_isize = 0;
++      int s_min_extra_isize = EXT3_SB(inode->i_sb)->s_es->s_min_extra_isize;
++
++      down_write(&EXT3_I(inode)->xattr_sem);
++
++retry:
++      if (EXT3_I(inode)->i_extra_isize >= new_extra_isize) {
++              up_write(&EXT3_I(inode)->xattr_sem);
++              return 0;
++      }
++
++      raw_inode = ext3_raw_inode(&iloc);
++
++      header = IHDR(inode, raw_inode);
++      entry = IFIRST(header);
++
++      /* No extended attributes present */
++      if (!(EXT3_I(inode)->i_state & EXT3_STATE_XATTR) ||
++          header->h_magic != cpu_to_le32(EXT3_XATTR_MAGIC)) {
++              memset((void *)raw_inode + EXT3_GOOD_OLD_INODE_SIZE, 0,
++                     new_extra_isize);
++              EXT3_I(inode)->i_extra_isize = new_extra_isize;
++              goto cleanup;
++      }
++
++      /*
++       * Check if enough free space is available in the inode to shift the
++       * entries ahead by new_extra_isize.
++       */
++
++      base = start = entry;
++      end = (void *)raw_inode + EXT3_SB(inode->i_sb)->s_inode_size;
++      min_offs = end - base;
++      last = entry;
++      total_ino = sizeof(struct ext3_xattr_ibody_header);
++
++      free = ext3_xattr_free_space(last, &min_offs, base, &total_ino);
++      if (free >= new_extra_isize) {
++              entry = IFIRST(header);
++              ext3_xattr_shift_entries(entry, EXT3_I(inode)->i_extra_isize -
++                              new_extra_isize, (void *)raw_inode +
++                              EXT3_GOOD_OLD_INODE_SIZE + new_extra_isize,
++                              (void *)header, total_ino,
++                              inode->i_sb->s_blocksize);
++              EXT3_I(inode)->i_extra_isize = new_extra_isize;
++              error = 0;
++              goto cleanup;
++      }
++
++      /*
++       * Enough free space isn't available in the inode, check if
++       * EA block can hold new_extra_isize bytes.
++       */
++      if (EXT3_I(inode)->i_file_acl) {
++              bh = sb_bread(inode->i_sb, EXT3_I(inode)->i_file_acl);
++              error = -EIO;
++              if (!bh)
++                      goto cleanup;
++              if (ext3_xattr_check_block(bh)) {
++                      ext3_error(inode->i_sb, __FUNCTION__,
++                              "inode %lu: bad block %d", inode->i_ino,
++                              EXT3_I(inode)->i_file_acl);
++                      error = -EIO;
++                      goto cleanup;
++              }
++              base = BHDR(bh);
++              first = BFIRST(bh);
++              end = bh->b_data + bh->b_size;
++              min_offs = end - base;
++              free = ext3_xattr_free_space(first, &min_offs, base,
++                                           &total_blk);
++              if (free < new_extra_isize) {
++                      if (!tried_min_extra_isize && s_min_extra_isize) {
++                              tried_min_extra_isize++;
++                              new_extra_isize = s_min_extra_isize;
++                              goto retry;
++                      }
++                      error = -1;
++                      goto cleanup;
++              }
++      } else {
++              free = inode->i_sb->s_blocksize;
++      }
++
++      while (new_extra_isize > 0) {
++              size_t offs, size, entry_size;
++              struct ext3_xattr_entry *small_entry = NULL;
++              struct ext3_xattr_info i = {
++                      .value = NULL,
++                      .value_len = 0,
++              };
++              unsigned int total_size, shift_bytes, temp = ~0U;
++
++              is = (struct ext3_xattr_ibody_find *) kmalloc(sizeof(struct
++                                       ext3_xattr_ibody_find), GFP_KERNEL);
++              bs = (struct ext3_xattr_block_find *) kmalloc(sizeof(struct
++                                       ext3_xattr_block_find), GFP_KERNEL);
++              memset((void *)is, 0, sizeof(struct ext3_xattr_ibody_find));
++              memset((void *)bs, 0, sizeof(struct ext3_xattr_block_find));
++
++              is->s.not_found = bs->s.not_found = -ENODATA;
++              is->iloc.bh = NULL;
++              bs->bh = NULL;
++
++              last = IFIRST(header);
++              /* Find the entry best suited to be pushed into EA block */
++              entry = NULL;
++              for (; !IS_LAST_ENTRY(last); last = EXT3_XATTR_NEXT(last)) {
++                      total_size = EXT3_XATTR_SIZE(le32_to_cpu(last->e_value_size)) +
++                                      EXT3_XATTR_LEN(last->e_name_len);
++                      if (total_size <= free && total_size < temp) {
++                              if (total_size < new_extra_isize) {
++                                      small_entry = last;
++                              } else {
++                                      entry = last;
++                                      temp = total_size;
++                              }
++                      }
++              }
++
++              if (entry == NULL) {
++                      if (small_entry) {
++                              entry = small_entry;
++                      } else {
++                              if (!tried_min_extra_isize &&
++                                  s_min_extra_isize) {
++                                      tried_min_extra_isize++;
++                                      new_extra_isize = s_min_extra_isize;
++                                      goto retry;
++                              }
++                              error = -1;
++                              goto cleanup;
++                      }
++              }
++              offs = le16_to_cpu(entry->e_value_offs);
++              size = le32_to_cpu(entry->e_value_size);
++              entry_size = EXT3_XATTR_LEN(entry->e_name_len);
++              i.name_index = entry->e_name_index,
++              buffer = kmalloc(EXT3_XATTR_SIZE(size), GFP_KERNEL);
++              b_entry_name = kmalloc(entry->e_name_len + 1, GFP_KERNEL);
++              /* Save the entry name and the entry value */
++              memcpy((void *)buffer, (void *)IFIRST(header) + offs,
++                     EXT3_XATTR_SIZE(size));
++              memcpy((void *)b_entry_name, (void *)entry->e_name,
++                     entry->e_name_len);
++              b_entry_name[entry->e_name_len] = '\0';
++              i.name = b_entry_name;
++
++              error = ext3_get_inode_loc(inode, &is->iloc);
++              if (error)
++                      goto cleanup;
++
++              error = ext3_xattr_ibody_find(inode, &i, is);
++              if (error)
++                      goto cleanup;
++
++              /* Remove the chosen entry from the inode */
++              error = ext3_xattr_ibody_set(handle, inode, &i, is);
++
++              entry = IFIRST(header);
++              if (entry_size + EXT3_XATTR_SIZE(size) >= new_extra_isize)
++                      shift_bytes = new_extra_isize;
++              else
++                      shift_bytes = entry_size + size;
++              /* Adjust the offsets and shift the remaining entries ahead */
++              ext3_xattr_shift_entries(entry, EXT3_I(inode)->i_extra_isize -
++                      shift_bytes, (void *)raw_inode +
++                      EXT3_GOOD_OLD_INODE_SIZE + extra_isize + shift_bytes,
++                      (void *)header, total_ino - entry_size,
++                      inode->i_sb->s_blocksize);
++
++              extra_isize += shift_bytes;
++              new_extra_isize -= shift_bytes;
++              EXT3_I(inode)->i_extra_isize = extra_isize;
++
++              i.name = b_entry_name;
++              i.value = buffer;
++              i.value_len = cpu_to_le32(size);
++              error = ext3_xattr_block_find(inode, &i, bs);
++              if (error)
++                      goto cleanup;
++
++              /* Add entry which was removed from the inode into the block */
++              error = ext3_xattr_block_set(handle, inode, &i, bs);
++              if (error)
++                      goto cleanup;
++      }
++
++cleanup:
++      if (b_entry_name)
++              kfree(b_entry_name);
++      if (buffer)
++              kfree(buffer);
++      if (is) {
++              brelse(is->iloc.bh);
++              kfree(is);
++      }
++      if (bs)
++              kfree(bs);
++      brelse(bh);
++      up_write(&EXT3_I(inode)->xattr_sem);
++      return error;
++}
++
++
++
+ /*
+  * ext3_xattr_delete_inode()
+  *
+Index: linux-2.6.16-sles10/fs/ext3/xattr.h
+===================================================================
+--- linux-2.6.16-sles10.orig/fs/ext3/xattr.h
++++ linux-2.6.16-sles10/fs/ext3/xattr.h
+@@ -75,6 +75,9 @@ extern int ext3_xattr_set_handle(handle_
+ extern void ext3_xattr_delete_inode(handle_t *, struct inode *);
+ extern void ext3_xattr_put_super(struct super_block *);
++int ext3_expand_extra_isize(struct inode *inode, int new_extra_isize,
++                          struct ext3_iloc iloc, handle_t *handle);
++
+ extern int init_ext3_xattr(void);
+ extern void exit_ext3_xattr(void);