* [PATCH] Avoid nested function definition
@ 2016-11-26 22:24 Peter Foley
2016-11-27 4:06 ` Coly Li
0 siblings, 1 reply; 4+ messages in thread
From: Peter Foley @ 2016-11-26 22:24 UTC (permalink / raw)
To: linux-kernel, kent.overstreet, shli, linux-bcache, linux-raid; +Cc: Peter Foley
Fixes below error with clang:
../drivers/md/bcache/sysfs.c:759:3: error: function definition is not allowed here
{ return *((uint16_t *) r) - *((uint16_t *) l); }
^
../drivers/md/bcache/sysfs.c:789:32: error: use of undeclared identifier 'cmp'
sort(p, n, sizeof(uint16_t), cmp, NULL);
^
2 errors generated.
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
---
drivers/md/bcache/sysfs.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index b3ff57d61dde..22ac9e6676a0 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -731,6 +731,11 @@ static struct attribute *bch_cache_set_internal_files[] = {
};
KTYPE(bch_cache_set_internal);
+static int cmp(const void *l, const void *r)
+{
+ return *((uint16_t *)r) - *((uint16_t *)l);
+}
+
SHOW(__bch_cache)
{
struct cache *ca = container_of(kobj, struct cache, kobj);
@@ -755,9 +760,6 @@ SHOW(__bch_cache)
CACHE_REPLACEMENT(&ca->sb));
if (attr == &sysfs_priority_stats) {
- int cmp(const void *l, const void *r)
- { return *((uint16_t *) r) - *((uint16_t *) l); }
-
struct bucket *b;
size_t n = ca->sb.nbuckets, i;
size_t unused = 0, available = 0, dirty = 0, meta = 0;
--
2.11.0.rc2
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] Avoid nested function definition
2016-11-26 22:24 [PATCH] Avoid nested function definition Peter Foley
@ 2016-11-27 4:06 ` Coly Li
2016-11-28 2:50 ` [PATCH v2] " Peter Foley
0 siblings, 1 reply; 4+ messages in thread
From: Coly Li @ 2016-11-27 4:06 UTC (permalink / raw)
To: Peter Foley, shli, linux-bcache, linux-raid; +Cc: linux-kernel, kent.overstreet
On 2016/11/27 上午6:24, Peter Foley wrote:
> Fixes below error with clang:
> ../drivers/md/bcache/sysfs.c:759:3: error: function definition is not allowed here
> { return *((uint16_t *) r) - *((uint16_t *) l); }
> ^
> ../drivers/md/bcache/sysfs.c:789:32: error: use of undeclared identifier 'cmp'
> sort(p, n, sizeof(uint16_t), cmp, NULL);
> ^
> 2 errors generated.
>
> Signed-off-by: Peter Foley <pefoley2@pefoley.com>
> ---
> drivers/md/bcache/sysfs.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
> index b3ff57d61dde..22ac9e6676a0 100644
> --- a/drivers/md/bcache/sysfs.c
> +++ b/drivers/md/bcache/sysfs.c
> @@ -731,6 +731,11 @@ static struct attribute *bch_cache_set_internal_files[] = {
> };
> KTYPE(bch_cache_set_internal);
>
> +static int cmp(const void *l, const void *r)
> +{
> + return *((uint16_t *)r) - *((uint16_t *)l);
> +}
> +
> SHOW(__bch_cache)
> {
> struct cache *ca = container_of(kobj, struct cache, kobj);
> @@ -755,9 +760,6 @@ SHOW(__bch_cache)
> CACHE_REPLACEMENT(&ca->sb));
>
> if (attr == &sysfs_priority_stats) {
> - int cmp(const void *l, const void *r)
> - { return *((uint16_t *) r) - *((uint16_t *) l); }
> -
> struct bucket *b;
> size_t n = ca->sb.nbuckets, i;
> size_t unused = 0, available = 0, dirty = 0, meta = 0;
>
I agree with this fix. Anyway, Can we use a more unique name like
__bch_cache_cmp() ?
Thanks.
--
Coly Li
^ permalink raw reply [flat|nested] 4+ messages in thread* [PATCH v2] Avoid nested function definition
2016-11-27 4:06 ` Coly Li
@ 2016-11-28 2:50 ` Peter Foley
2016-11-28 3:06 ` Coly Li
0 siblings, 1 reply; 4+ messages in thread
From: Peter Foley @ 2016-11-28 2:50 UTC (permalink / raw)
To: linux-kernel, shli, linux-bcache, linux-raid, i, kent.overstreet
Cc: Peter Foley
Fixes below error with clang:
../drivers/md/bcache/sysfs.c:759:3: error: function definition is not allowed here
{ return *((uint16_t *) r) - *((uint16_t *) l); }
^
../drivers/md/bcache/sysfs.c:789:32: error: use of undeclared identifier 'cmp'
sort(p, n, sizeof(uint16_t), cmp, NULL);
^
2 errors generated.
v2:
rename function to __bch_cache_cmp
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
---
drivers/md/bcache/sysfs.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index b3ff57d61dde..8f12089a69e7 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -731,6 +731,11 @@ static struct attribute *bch_cache_set_internal_files[] = {
};
KTYPE(bch_cache_set_internal);
+static int __bch_cache_cmp(const void *l, const void *r)
+{
+ return *((uint16_t *)r) - *((uint16_t *)l);
+}
+
SHOW(__bch_cache)
{
struct cache *ca = container_of(kobj, struct cache, kobj);
@@ -755,9 +760,6 @@ SHOW(__bch_cache)
CACHE_REPLACEMENT(&ca->sb));
if (attr == &sysfs_priority_stats) {
- int cmp(const void *l, const void *r)
- { return *((uint16_t *) r) - *((uint16_t *) l); }
-
struct bucket *b;
size_t n = ca->sb.nbuckets, i;
size_t unused = 0, available = 0, dirty = 0, meta = 0;
@@ -786,7 +788,7 @@ SHOW(__bch_cache)
p[i] = ca->buckets[i].prio;
mutex_unlock(&ca->set->bucket_lock);
- sort(p, n, sizeof(uint16_t), cmp, NULL);
+ sort(p, n, sizeof(uint16_t), __bch_cache_cmp, NULL);
while (n &&
!cached[n - 1])
--
2.11.0.rc2
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH v2] Avoid nested function definition
2016-11-28 2:50 ` [PATCH v2] " Peter Foley
@ 2016-11-28 3:06 ` Coly Li
0 siblings, 0 replies; 4+ messages in thread
From: Coly Li @ 2016-11-28 3:06 UTC (permalink / raw)
To: Peter Foley, linux-kernel, shli, linux-bcache, linux-raid,
kent.overstreet
On 2016/11/28 上午10:50, Peter Foley wrote:
> Fixes below error with clang:
> ../drivers/md/bcache/sysfs.c:759:3: error: function definition is not allowed here
> { return *((uint16_t *) r) - *((uint16_t *) l); }
> ^
> ../drivers/md/bcache/sysfs.c:789:32: error: use of undeclared identifier 'cmp'
> sort(p, n, sizeof(uint16_t), cmp, NULL);
> ^
> 2 errors generated.
>
> v2:
> rename function to __bch_cache_cmp
>
> Signed-off-by: Peter Foley <pefoley2@pefoley.com>
> ---
> drivers/md/bcache/sysfs.c | 10 ++++++----
> 1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
> index b3ff57d61dde..8f12089a69e7 100644
> --- a/drivers/md/bcache/sysfs.c
> +++ b/drivers/md/bcache/sysfs.c
> @@ -731,6 +731,11 @@ static struct attribute *bch_cache_set_internal_files[] = {
> };
> KTYPE(bch_cache_set_internal);
>
> +static int __bch_cache_cmp(const void *l, const void *r)
> +{
> + return *((uint16_t *)r) - *((uint16_t *)l);
> +}
> +
> SHOW(__bch_cache)
> {
> struct cache *ca = container_of(kobj, struct cache, kobj);
> @@ -755,9 +760,6 @@ SHOW(__bch_cache)
> CACHE_REPLACEMENT(&ca->sb));
>
> if (attr == &sysfs_priority_stats) {
> - int cmp(const void *l, const void *r)
> - { return *((uint16_t *) r) - *((uint16_t *) l); }
> -
> struct bucket *b;
> size_t n = ca->sb.nbuckets, i;
> size_t unused = 0, available = 0, dirty = 0, meta = 0;
> @@ -786,7 +788,7 @@ SHOW(__bch_cache)
> p[i] = ca->buckets[i].prio;
> mutex_unlock(&ca->set->bucket_lock);
>
> - sort(p, n, sizeof(uint16_t), cmp, NULL);
> + sort(p, n, sizeof(uint16_t), __bch_cache_cmp, NULL);
>
> while (n &&
> !cached[n - 1])
>
Acked-by: Coly Li <colyli@suse.de>
--
Coly Li
^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-11-26 22:24 [PATCH] Avoid nested function definition Peter Foley
2016-11-27 4:06 ` Coly Li
2016-11-28 2:50 ` [PATCH v2] " Peter Foley
2016-11-28 3:06 ` Coly Li
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