On Fri, 9 Aug 2013 15:21:04 -0700 Kees Cook <kees@xxxxxxxxxxx> wrote:
> Hi,
>
> On Wed, Aug 07, 2013 at 03:19:03PM +1000, Stephen Rothwell wrote:
> > Hi Andrew,
> >
> > list_for_each_safe(cur, tmp, &sbi->s_es_lru) {
> > + int ret;
> > +
> > /*
> > * If we have already reclaimed all extents from extent
> > * status tree, just stop the loop immediately.
>
> Which is masking the "ret" at the start, leading to warnings at build-time:
>
> fs/ext4/extents_status.c: In function _____ext4_es_shrink___:
> fs/ext4/extents_status.c:950:6: warning: unused variable ___ret___ [-Wunused-variable]
yup.
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: fs-convert-fs-shrinkers-to-new-scan-count-api-fix-fix-2
fix shadowed local, spell "skipped" correctly
Cc: Dave Chinner <dchinner@xxxxxxxxxx>
Cc: Glauber Costa <glommer@xxxxxxxxxx>
Cc: Kees Cook <kees@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ext4/extents_status.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff -puN fs/ext4/extents_status.c~fs-convert-fs-shrinkers-to-new-scan-count-api-fix-fix-2 fs/ext4/extents_status.c
--- a/fs/ext4/extents_status.c~fs-convert-fs-shrinkers-to-new-scan-count-api-fix-fix-2
+++ a/fs/ext4/extents_status.c
@@ -946,15 +946,15 @@ static int __ext4_es_shrink(struct ext4_
{
struct ext4_inode_info *ei;
struct list_head *cur, *tmp;
- LIST_HEAD(skiped);
- int ret, nr_shrunk = 0;
+ LIST_HEAD(skipped);
+ int nr_shrunk = 0;
int retried = 0, skip_precached = 1, nr_skipped = 0;
spin_lock(&sbi->s_es_lru_lock);
retry:
list_for_each_safe(cur, tmp, &sbi->s_es_lru) {
- int ret;
+ int shrunk;
/*
* If we have already reclaimed all extents from extent
@@ -974,7 +974,7 @@ retry:
(skip_precached && ext4_test_inode_state(&ei->vfs_inode,
EXT4_STATE_EXT_PRECACHED))) {
nr_skipped++;
- list_move_tail(cur, &skiped);
+ list_move_tail(cur, &skipped);
continue;
}
@@ -982,19 +982,19 @@ retry:
continue;
write_lock(&ei->i_es_lock);
- ret = __es_try_to_reclaim_extents(ei, nr_to_scan);
+ shrunk = __es_try_to_reclaim_extents(ei, nr_to_scan);
if (ei->i_es_lru_nr == 0)
list_del_init(&ei->i_es_lru);
write_unlock(&ei->i_es_lock);
- nr_shrunk += ret;
- nr_to_scan -= ret;
+ nr_shrunk += shrunk;
+ nr_to_scan -= shrunk;
if (nr_to_scan == 0)
break;
}
/* Move the newer inodes into the tail of the LRU list. */
- list_splice_tail(&skiped, &sbi->s_es_lru);
+ list_splice_tail(&skipped, &sbi->s_es_lru);
/*
* If we skipped any inodes, and we weren't able to make any
_
--
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