This is a note to let you know that we have just queued up the patch titled
Subject: ext4: Update flex_bg free blocks and free inodes counters when resizing.
to the 2.6.27-stable tree. Its filename is
ext4-update-flex_bg-free-blocks-and-free-inodes-counters-when-resizing.patch
A git repo of this tree can be found at
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
>From tytso@xxxxxxx Wed Dec 3 09:54:56 2008
From: Frederic Bohe <frederic.bohe@xxxxxxxx>
Date: Sun, 16 Nov 2008 11:05:21 -0500
Subject: ext4: Update flex_bg free blocks and free inodes counters when resizing.
To: stable@xxxxxxxxxx
Cc: Frederic Bohe <frederic.bohe@xxxxxxxx>, Ext4 Developers List <linux-ext4@xxxxxxxxxxxxxxx>, "Theodore Ts'o" <tytso@xxxxxxx>
Message-ID: <1226851540-8032-2-git-send-email-tytso@xxxxxxx>
From: Frederic Bohe <frederic.bohe@xxxxxxxx>
(cherry picked from commit c62a11fd9555007b1caab83b5bcbb443a43e32bb)
This fixes a bug which prevented the newly created inodes after a
resize from being used on filesystems with flex_bg.
Signed-off-by: Frederic Bohe <frederic.bohe@xxxxxxxx>
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
fs/ext4/resize.c | 9 +++++++++
fs/ext4/super.c | 7 +++++--
2 files changed, 14 insertions(+), 2 deletions(-)
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -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;
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1504,8 +1504,11 @@ 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) {
Patches currently in stable-queue which might be from frederic.bohe@xxxxxxxx are
queue-2.6.27/ext4-update-flex_bg-free-blocks-and-free-inodes-counters-when-resizing.patch
queue-2.6.27/ext4-fix-initialization-of-uninit-bitmap-blocks.patch
queue-2.6.27/ext4-add-checksum-calculation-when-clearing-uninit-flag-in-ext4_new_inode.patch
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