[ 3.5.y.z extended stable ] Patch "ext4: fix online resizing for ext3-compat file systems" has been added to staging queue
Luis Henriques
luis.henriques at canonical.com
Tue May 7 10:33:30 UTC 2013
This is a note to let you know that I have just added a patch titled
ext4: fix online resizing for ext3-compat file systems
to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree
which can be found at:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Luis
------
>From d8dec54073521d086640fd427d3086784898ad3a Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <tytso at mit.edu>
Date: Sun, 21 Apr 2013 20:19:43 -0400
Subject: [PATCH] ext4: fix online resizing for ext3-compat file systems
commit c5c72d814cf0f650010337c73638b25e6d14d2d4 upstream.
Commit fb0a387dcdc restricts block allocations for indirect-mapped
files to block groups less than s_blockfile_groups. However, the
online resizing code wasn't setting s_blockfile_groups, so the newly
added block groups were not available for non-extent mapped files.
Reported-by: Eric Sandeen <sandeen at redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso at mit.edu>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
fs/ext4/resize.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index a2289bf..097a7b0 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1255,6 +1255,8 @@ static void ext4_update_super(struct super_block *sb,
/* Update the global fs size fields */
sbi->s_groups_count += flex_gd->count;
+ sbi->s_blockfile_groups = min_t(ext4_group_t, sbi->s_groups_count,
+ (EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb)));
/* Update the reserved block counts only once the new group is
* active. */
--
1.8.1.2
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