This is a note to let you know that we have just queued up the patch titled
Subject: ext4: Do mballoc init before doing filesystem recovery
to the 2.6.27-stable tree. Its filename is
ext4-do-mballoc-init-before-doing-filesystem-recovery.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 10:42:48 2008
From: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Date: Sun, 16 Nov 2008 11:05:33 -0500
Subject: ext4: Do mballoc init before doing filesystem recovery
To: stable@xxxxxxxxxx
Cc: Ext4 Developers List <linux-ext4@xxxxxxxxxxxxxxx>, "Theodore Ts'o" <tytso@xxxxxxx>, "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Message-ID: <1226851540-8032-14-git-send-email-tytso@xxxxxxx>
From: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
(cherry picked from commit c2774d84fd6cab2bfa2a2fae0b1ca8d8ebde48a2)
During filesystem recovery we may be doing a truncate
which expects some of the mballoc data structures to
be initialized. So do ext4_mb_init before recovery.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
fs/ext4/super.c | 25 +++++++++++++++----------
1 file changed, 15 insertions(+), 10 deletions(-)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2449,6 +2449,21 @@ static int ext4_fill_super(struct super_
"available.\n");
}
+ if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
+ printk(KERN_WARNING "EXT4-fs: Ignoring delalloc option - "
+ "requested data journaling mode\n");
+ clear_opt(sbi->s_mount_opt, DELALLOC);
+ } else if (test_opt(sb, DELALLOC))
+ printk(KERN_INFO "EXT4-fs: delayed allocation enabled\n");
+
+ ext4_ext_init(sb);
+ err = ext4_mb_init(sb, needs_recovery);
+ if (err) {
+ printk(KERN_ERR "EXT4-fs: failed to initalize mballoc (%d)\n",
+ err);
+ goto failed_mount4;
+ }
+
/*
* akpm: core read_super() calls in here with the superblock locked.
* That deadlocks, because orphan cleanup needs to lock the superblock
@@ -2468,16 +2483,6 @@ static int ext4_fill_super(struct super_
test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA ? "ordered":
"writeback");
- if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
- printk(KERN_WARNING "EXT4-fs: Ignoring delalloc option - "
- "requested data journaling mode\n");
- clear_opt(sbi->s_mount_opt, DELALLOC);
- } else if (test_opt(sb, DELALLOC))
- printk(KERN_INFO "EXT4-fs: delayed allocation enabled\n");
-
- ext4_ext_init(sb);
- ext4_mb_init(sb, needs_recovery);
-
lock_kernel();
return 0;
Patches currently in stable-queue which might be from aneesh.kumar@xxxxxxxxxxxxxxxxxx are
queue-2.6.27/ext4-elevate-write-count-for-migrate-ioctl.patch
queue-2.6.27/ext4-free-ext4_prealloc_space-using-kmem_cache_free.patch
queue-2.6.27/ext4-do-mballoc-init-before-doing-filesystem-recovery.patch
queue-2.6.27/ext4-convert-to-host-order-before-using-the-values.patch
queue-2.6.27/ext4-mark-the-buffer_heads-as-dirty-and-uptodate-after-prepare_write.patch
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