From: Frederic Bohe <frederic.bohe@xxxxxxxx>
Update flex_bg free blocks and free inodes counters when resizing.
Signed-off-by: Frederic Bohe <frederic.bohe@xxxxxxxx>
---
This patch fixes a bug which prevents to use the newly created inodes after a resize with flex bg.
I am not sure if it is really usefull to update free blocks too, but it is definitely cleaner code.
resize.c | 9 +++++++++
super.c | 7 +++++--
2 files changed, 14 insertions(+), 2 deletions(-)
Index: linux-2.6.27-rc5+patch_queue/fs/ext4/resize.c
===================================================================
--- linux-2.6.27-rc5+patch_queue.orig/fs/ext4/resize.c 2008-09-01 11:23:09.000000000 +0200
+++ linux-2.6.27-rc5+patch_queue/fs/ext4/resize.c 2008-09-01 13:16:03.000000000 +0200
@@ -929,6 +929,15 @@ int ext4_group_add(struct super_block *s
percpu_counter_add(&sbi->s_freeinodes_counter,
EXT4_INODES_PER_GROUP(sb));
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
+ ext4_group_t flex_group;
+ flex_group = ext4_flex_group(sbi, input->group);
+ sbi->s_flex_groups[flex_group].free_blocks +=
+ input->free_blocks_count;
+ sbi->s_flex_groups[flex_group].free_inodes +=
+ EXT4_INODES_PER_GROUP(sb);
+ }
+
ext4_journal_dirty_metadata(handle, sbi->s_sbh);
sb->s_dirt = 1;
Index: linux-2.6.27-rc5+patch_queue/fs/ext4/super.c
===================================================================
--- linux-2.6.27-rc5+patch_queue.orig/fs/ext4/super.c 2008-09-01 12:38:03.000000000 +0200
+++ linux-2.6.27-rc5+patch_queue/fs/ext4/super.c 2008-09-01 13:29:39.000000000 +0200
@@ -1507,8 +1507,11 @@ static int ext4_fill_flex_info(struct su
sbi->s_log_groups_per_flex = sbi->s_es->s_log_groups_per_flex;
groups_per_flex = 1 << sbi->s_log_groups_per_flex;
- flex_group_count = (sbi->s_groups_count + groups_per_flex - 1) /
- groups_per_flex;
+ /* We allocate both existing and potentially added groups */
+ flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
+ ((sbi->s_es->s_reserved_gdt_blocks +1 ) <<
+ EXT4_DESC_PER_BLOCK_BITS(sb))) /
+ groups_per_flex;
sbi->s_flex_groups = kzalloc(flex_group_count *
sizeof(struct flex_groups), GFP_KERNEL);
if (sbi->s_flex_groups == NULL) {
--
--
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