This is a note to let you know that I've just added the patch titled
ext4: fixup 64-bit divides in 3.0-stable backport of upstream fix
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-fixup-64-bit-divides-in-3.0-stable-backport-of-upstream-fix.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From toddpoynor@xxxxxxxxxx Tue Apr 9 09:08:53 2013
From: Todd Poynor <toddpoynor@xxxxxxxxxx>
Date: Fri, 5 Apr 2013 16:38:53 -0700
Subject: ext4: fixup 64-bit divides in 3.0-stable backport of upstream fix
To: stable@xxxxxxxxxxxxxxx
Message-ID: <1365205133-28456-1-git-send-email-toddpoynor@xxxxxxxxxx>
From: Todd Poynor <toddpoynor@xxxxxxxxxx>
Replace C division operators with div64_u64 for divides introduced in:
commit 503f4bdcc078e7abee273a85ce322de81b18a224
ext4: use atomic64_t for the per-flexbg free_clusters count
Specific to the 3.0-stable backport of the upstream patch.
Signed-off-by: Todd Poynor <toddpoynor@xxxxxxxxxx>
Reviewed-by: "Theodore Ts'o" <tytso@xxxxxxx>
Cc: Christoph Biedl <linux-kernel.bfrz@xxxxxxxxxxxxxxxxxx>
Cc: Lukas Czerner <lczerner@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/ialloc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -22,6 +22,7 @@
#include <linux/random.h>
#include <linux/bitops.h>
#include <linux/blkdev.h>
+#include <linux/math64.h>
#include <asm/byteorder.h>
#include "ext4.h"
@@ -356,7 +357,7 @@ static int find_group_flex(struct super_
find_close_to_parent:
flexbg_free_blocks = atomic64_read(&flex_group[best_flex].free_blocks);
- flex_freeb_ratio = flexbg_free_blocks * 100 / blocks_per_flex;
+ flex_freeb_ratio = div64_u64(flexbg_free_blocks * 100, blocks_per_flex);
if (atomic_read(&flex_group[best_flex].free_inodes) &&
flex_freeb_ratio > free_block_ratio)
goto found_flexbg;
@@ -371,7 +372,7 @@ find_close_to_parent:
continue;
flexbg_free_blocks = atomic64_read(&flex_group[i].free_blocks);
- flex_freeb_ratio = flexbg_free_blocks * 100 / blocks_per_flex;
+ flex_freeb_ratio = div64_u64(flexbg_free_blocks * 100, blocks_per_flex);
if (flex_freeb_ratio > free_block_ratio &&
(atomic_read(&flex_group[i].free_inodes))) {
Patches currently in stable-queue which might be from toddpoynor@xxxxxxxxxx are
queue-3.0/ext4-fixup-64-bit-divides-in-3.0-stable-backport-of-upstream-fix.patch
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