This is a note to let you know that I've just added the patch titled
ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr
to the 3.5-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-pass-a-char-to-ext4_count_free-instead-of-a-buffer_head-ptr.patch
and it can be found in the queue-3.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From f6fb99cadcd44660c68e13f6eab28333653621e6 Mon Sep 17 00:00:00 2001
From: Theodore Ts'o <[email protected]>
Date: Sat, 30 Jun 2012 19:14:57 -0400
Subject: ext4: pass a char * to ext4_count_free() instead of a buffer_head ptr
From: Theodore Ts'o <[email protected]>
commit f6fb99cadcd44660c68e13f6eab28333653621e6 upstream.
Make it possible for ext4_count_free to operate on buffers and not
just data in buffer_heads.
Signed-off-by: "Theodore Ts'o" <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/ext4/balloc.c | 3 ++-
fs/ext4/bitmap.c | 8 +++-----
fs/ext4/ext4.h | 2 +-
fs/ext4/ialloc.c | 3 ++-
4 files changed, 8 insertions(+), 8 deletions(-)
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -609,7 +609,8 @@ ext4_fsblk_t ext4_count_free_clusters(st
if (bitmap_bh == NULL)
continue;
- x = ext4_count_free(bitmap_bh, sb->s_blocksize);
+ x = ext4_count_free(bitmap_bh->b_data,
+ EXT4_BLOCKS_PER_GROUP(sb) / 8);
printk(KERN_DEBUG "group %u: stored = %d, counted = %u\n",
i, ext4_free_group_clusters(sb, gdp), x);
bitmap_count += x;
--- a/fs/ext4/bitmap.c
+++ b/fs/ext4/bitmap.c
@@ -15,15 +15,13 @@
static const int nibblemap[] = {4, 3, 3, 2, 3, 2, 2, 1, 3, 2, 2, 1, 2, 1, 1,
0};
-unsigned int ext4_count_free(struct buffer_head *map, unsigned int numchars)
+unsigned int ext4_count_free(char *bitmap, unsigned int numchars)
{
unsigned int i, sum = 0;
- if (!map)
- return 0;
for (i = 0; i < numchars; i++)
- sum += nibblemap[map->b_data[i] & 0xf] +
- nibblemap[(map->b_data[i] >> 4) & 0xf];
+ sum += nibblemap[bitmap[i] & 0xf] +
+ nibblemap[(bitmap[i] >> 4) & 0xf];
return sum;
}
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1852,7 +1852,7 @@ struct mmpd_data {
# define NORET_AND noreturn,
/* bitmap.c */
-extern unsigned int ext4_count_free(struct buffer_head *, unsigned);
+extern unsigned int ext4_count_free(char *bitmap, unsigned numchars);
void ext4_inode_bitmap_csum_set(struct super_block *sb, ext4_group_t group,
struct ext4_group_desc *gdp,
struct buffer_head *bh, int sz);
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1054,7 +1054,8 @@ unsigned long ext4_count_free_inodes(str
if (!bitmap_bh)
continue;
- x = ext4_count_free(bitmap_bh, EXT4_INODES_PER_GROUP(sb) / 8);
+ x = ext4_count_free(bitmap_bh->b_data,
+ EXT4_INODES_PER_GROUP(sb) / 8);
printk(KERN_DEBUG "group %lu: stored = %d, counted = %lu\n",
(unsigned long) i, ext4_free_inodes_count(sb, gdp), x);
bitmap_count += x;
Patches currently in stable-queue which might be from [email protected] are
queue-3.5/ext4-undo-ext4_calc_metadata_amount-if-we-fail-to-claim-space.patch
queue-3.5/ext4-pass-a-char-to-ext4_count_free-instead-of-a-buffer_head-ptr.patch
queue-3.5/ext4-don-t-let-i_reserved_meta_blocks-go-negative.patch
queue-3.5/ext4-fix-overhead-calculation-used-by-ext4_statfs.patch
--
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