Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (61 commits)
  ext4: Documention update for new ordered mode and delayed allocation
  ext4: do not set extents feature from the kernel
  ext4: Don't allow nonextenst mount option for large filesystem
  ext4: Enable delalloc by default.
  ext4: delayed allocation i_blocks fix for stat
  ext4: fix delalloc i_disksize early update issue
  ext4: Handle page without buffers in ext4_*_writepage()
  ext4: Add ordered mode support for delalloc
  ext4: Invert lock ordering of page_lock and transaction start in delalloc
  mm: Add range_cont mode for writeback
  ext4: delayed allocation ENOSPC handling
  percpu_counter: new function percpu_counter_sum_and_set
  ext4: Add delayed allocation support in data=writeback mode
  vfs: add hooks for ext4's delayed allocation support
  jbd2: Remove data=ordered mode support using jbd buffer heads
  ext4: Use new framework for data=ordered mode in JBD2
  jbd2: Implement data=ordered mode handling via inodes
  vfs: export filemap_fdatawrite_range()
  ext4: Fix lock inversion in ext4_ext_truncate()
  ext4: Invert the locking order of page_lock and transaction start
  ...

1 files changed, 51 insertions, 1 deletions

diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 9ff7b1c04239..f000fbe2cd93 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -866,6 +866,15 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
         gdp->bg_checksum = ext4_group_desc_csum(sbi, input->group, gdp);
 
         /*
+         * We can allocate memory for mb_alloc based on the new group
+         * descriptor
+         */
+        if (test_opt(sb, MBALLOC)) {
+                err = ext4_mb_add_more_groupinfo(sb, input->group, gdp);
+                if (err)
+                        goto exit_journal;
+        }
+        /*
          * Make the new blocks and inodes valid next.  We do this before
          * increasing the group count so that once the group is enabled,
          * all of its blocks and inodes are already valid.
@@ -957,6 +966,8 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
         handle_t *handle;
         int err;
         unsigned long freed_blocks;
+        ext4_group_t group;
+        struct ext4_group_info *grp;
 
         /* We don't need to worry about locking wrt other resizers just
          * yet: we're going to revalidate es->s_blocks_count after
@@ -988,7 +999,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
         }
 
         /* Handle the remaining blocks in the last group only. */
-        ext4_get_group_no_and_offset(sb, o_blocks_count, NULL, &last);
+        ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last);
 
         if (last == 0) {
                 ext4_warning(sb, __func__,
@@ -1060,6 +1071,45 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
                    o_blocks_count + add);
         if ((err = ext4_journal_stop(handle)))
                 goto exit_put;
+
+        /*
+         * Mark mballoc pages as not up to date so that they will be updated
+         * next time they are loaded by ext4_mb_load_buddy.
+         */
+        if (test_opt(sb, MBALLOC)) {
+                struct ext4_sb_info *sbi = EXT4_SB(sb);
+                struct inode *inode = sbi->s_buddy_cache;
+                int blocks_per_page;
+                int block;
+                int pnum;
+                struct page *page;
+
+                /* Set buddy page as not up to date */
+                blocks_per_page = PAGE_CACHE_SIZE / sb->s_blocksize;
+                block = group * 2;
+                pnum = block / blocks_per_page;
+                page = find_get_page(inode->i_mapping, pnum);
+                if (page != NULL) {
+                        ClearPageUptodate(page);
+                        page_cache_release(page);
+                }
+
+                /* Set bitmap page as not up to date */
+                block++;
+                pnum = block / blocks_per_page;
+                page = find_get_page(inode->i_mapping, pnum);
+                if (page != NULL) {
+                        ClearPageUptodate(page);
+                        page_cache_release(page);
+                }
+
+                /* Get the info on the last group */
+                grp = ext4_get_group_info(sb, group);
+
+                /* Update free blocks in group info */
+                ext4_mb_update_group_info(grp, add);
+        }
+
         if (test_opt(sb, DEBUG))
                 printk(KERN_DEBUG "EXT4-fs: extended group to %llu blocks\n",
                        ext4_blocks_count(es));