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SubjectRe: [PATCH 1/2] add declaration of ocfs2_free_local_alloc_bits
On Tue,  4 Sep 2018 12:16:20 +0800 Larry Chen <lchen@suse.com> wrote:

> Signed-off-by: Larry Chen <lchen@suse.com>
> ---
> fs/ocfs2/alloc.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
> index 250bcacdf9e9..5770503b0e36 100644
> --- a/fs/ocfs2/alloc.h
> +++ b/fs/ocfs2/alloc.h
> @@ -323,4 +323,10 @@ int ocfs2_find_cpos_for_left_leaf(struct super_block *sb,
> int ocfs2_find_subtree_root(struct ocfs2_extent_tree *et,
> struct ocfs2_path *left,
> struct ocfs2_path *right);
> +
> +int ocfs2_free_local_alloc_bits(struct ocfs2_super *osb,
> + handle_t *handle,
> + struct ocfs2_alloc_context *ac,
> + u32 bit_off,
> + u32 num_bits);
> #endif /* OCFS2_ALLOC_H */

It's already declared in fs/ocfs2/localalloc.h - why not include that?

I did this with the other patch and all seems well:


From: Andrew Morton <akpm@linux-foundation.org>
Subject: fix-clusters-leak-in-ocfs2_defrag_extent-fix

include localalloc.h, reduce scope of data_ac

Cc: Larry Chen <lchen@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

fs/ocfs2/move_extents.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

--- a/fs/ocfs2/move_extents.c~fix-clusters-leak-in-ocfs2_defrag_extent-fix
+++ a/fs/ocfs2/move_extents.c
@@ -25,6 +25,7 @@
#include "ocfs2_ioctl.h"

#include "alloc.h"
+#include "localalloc.h"
#include "aops.h"
#include "dlmglue.h"
#include "extent_map.h"
@@ -227,7 +228,6 @@ static int ocfs2_defrag_extent(struct oc
u32 new_phys_cpos, new_len;
u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
int need_free = 0;
- struct ocfs2_alloc_context *data_ac;

if ((ext_flags & OCFS2_EXT_REFCOUNTED) && *len) {
BUG_ON(!ocfs2_is_refcount_inode(inode));
@@ -345,7 +345,8 @@ static int ocfs2_defrag_extent(struct oc

out_commit:
if (need_free && context->data_ac) {
- data_ac = context->data_ac;
+ struct ocfs2_alloc_context *data_ac = context->data_ac;
+
if (context->data_ac->ac_which == OCFS2_AC_USE_LOCAL)
ocfs2_free_local_alloc_bits(osb, handle, data_ac,
new_phys_cpos, new_len);
_
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