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From: Bartosz Golaszewski <brgl@bgdev.pl>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Gustavo Padovan" <gustavo@padovan.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Borislav Petkov" <bp@alien8.de>,
	"Tony Luck" <tony.luck@intel.com>,
	"James Morse" <james.morse@arm.com>,
	"Robert Richter" <rric@kernel.org>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	"Jason Wang" <jasowang@redhat.com>,
	"Christoph Lameter" <cl@linux.com>,
	"Pekka Enberg" <penberg@kernel.org>,
	"David Rientjes" <rientjes@google.com>,
	"Joonsoo Kim" <iamjoonsoo.kim@lge.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Jaroslav Kysela" <perex@perex.cz>,
	"Takashi Iwai" <tiwai@suse.com>
Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org,
	linux-edac@vger.kernel.org, linux-gpio@vger.kernel.org,
	kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, linux-mm@kvack.org,
	alsa-devel@alsa-project.org,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH v3 1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO
Date: Mon,  9 Nov 2020 12:06:46 +0100	[thread overview]
Message-ID: <20201109110654.12547-2-brgl@bgdev.pl> (raw)
In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl>

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

__GFP_ZERO is ignored by krealloc() (unless we fall-back to kmalloc()
path, in which case it's honored). Point that out in the kerneldoc.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 mm/slab_common.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/slab_common.c b/mm/slab_common.c
index f9ccd5dc13f3..d6df73f79204 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1091,9 +1091,9 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size,
  * @flags: the type of memory to allocate.
  *
  * The contents of the object pointed to are preserved up to the
- * lesser of the new and old sizes.  If @p is %NULL, krealloc()
- * behaves exactly like kmalloc().  If @new_size is 0 and @p is not a
- * %NULL pointer, the object pointed to is freed.
+ * lesser of the new and old sizes (__GFP_ZERO flag is effectively ignored).
+ * If @p is %NULL, krealloc() behaves exactly like kmalloc().  If @new_size
+ * is 0 and @p is not a %NULL pointer, the object pointed to is freed.
  *
  * Return: pointer to the allocated memory or %NULL in case of error
  */
-- 
2.29.1


WARNING: multiple messages have this Message-ID
From: Bartosz Golaszewski <brgl@bgdev.pl>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Gustavo Padovan" <gustavo@padovan.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Borislav Petkov" <bp@alien8.de>,
	"Tony Luck" <tony.luck@intel.com>,
	"James Morse" <james.morse@arm.com>,
	"Robert Richter" <rric@kernel.org>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	"Jason Wang" <jasowang@redhat.com>,
	"Christoph Lameter" <cl@linux.com>,
	"Pekka Enberg" <penberg@kernel.org>,
	"David Rientjes" <rientjes@google.com>,
	"Joonsoo Kim" <iamjoonsoo.kim@lge.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Jaroslav Kysela" <perex@perex.cz>,
	"Takashi Iwai" <tiwai@suse.com>
Cc: alsa-devel@alsa-project.org, kvm@vger.kernel.org,
	linux-mm@kvack.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	virtualization@lists.linux-foundation.org,
	linaro-mm-sig@lists.linaro.org, linux-gpio@vger.kernel.org,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	linux-media@vger.kernel.org, linux-edac@vger.kernel.org
Subject: [PATCH v3 1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO
Date: Mon,  9 Nov 2020 12:06:46 +0100	[thread overview]
Message-ID: <20201109110654.12547-2-brgl@bgdev.pl> (raw)
In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl>

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

__GFP_ZERO is ignored by krealloc() (unless we fall-back to kmalloc()
path, in which case it's honored). Point that out in the kerneldoc.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 mm/slab_common.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/slab_common.c b/mm/slab_common.c
index f9ccd5dc13f3..d6df73f79204 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1091,9 +1091,9 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size,
  * @flags: the type of memory to allocate.
  *
  * The contents of the object pointed to are preserved up to the
- * lesser of the new and old sizes.  If @p is %NULL, krealloc()
- * behaves exactly like kmalloc().  If @new_size is 0 and @p is not a
- * %NULL pointer, the object pointed to is freed.
+ * lesser of the new and old sizes (__GFP_ZERO flag is effectively ignored).
+ * If @p is %NULL, krealloc() behaves exactly like kmalloc().  If @new_size
+ * is 0 and @p is not a %NULL pointer, the object pointed to is freed.
  *
  * Return: pointer to the allocated memory or %NULL in case of error
  */
-- 
2.29.1


WARNING: multiple messages have this Message-ID
From: Bartosz Golaszewski <brgl@bgdev.pl>
To: "Andy Shevchenko" <andriy.shevchenko@linux.intel.com>,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Gustavo Padovan" <gustavo@padovan.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"Borislav Petkov" <bp@alien8.de>,
	"Tony Luck" <tony.luck@intel.com>,
	"James Morse" <james.morse@arm.com>,
	"Robert Richter" <rric@kernel.org>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"David Airlie" <airlied@linux.ie>,
	"Daniel Vetter" <daniel@ffwll.ch>,
	"Alexander Shishkin" <alexander.shishkin@linux.intel.com>,
	"Linus Walleij" <linus.walleij@linaro.org>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	"Jason Wang" <jasowang@redhat.com>,
	"Christoph Lameter" <cl@linux.com>,
	"Pekka Enberg" <penberg@kernel.org>,
	"David Rientjes" <rientjes@google.com>,
	"Joonsoo Kim" <iamjoonsoo.kim@lge.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Jaroslav Kysela" <perex@perex.cz>,
	"Takashi Iwai" <tiwai@suse.com>
Cc: alsa-devel@alsa-project.org, kvm@vger.kernel.org,
	linux-mm@kvack.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	virtualization@lists.linux-foundation.org,
	linaro-mm-sig@lists.linaro.org, linux-gpio@vger.kernel.org,
	Bartosz Golaszewski <bgolaszewski@baylibre.com>,
	linux-media@vger.kernel.org, linux-edac@vger.kernel.org
Subject: [PATCH v3 1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO
Date: Mon,  9 Nov 2020 12:06:46 +0100	[thread overview]
Message-ID: <20201109110654.12547-2-brgl@bgdev.pl> (raw)
In-Reply-To: <20201109110654.12547-1-brgl@bgdev.pl>

From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

__GFP_ZERO is ignored by krealloc() (unless we fall-back to kmalloc()
path, in which case it's honored). Point that out in the kerneldoc.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
 mm/slab_common.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/slab_common.c b/mm/slab_common.c
index f9ccd5dc13f3..d6df73f79204 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -1091,9 +1091,9 @@ static __always_inline void *__do_krealloc(const void *p, size_t new_size,
  * @flags: the type of memory to allocate.
  *
  * The contents of the object pointed to are preserved up to the
- * lesser of the new and old sizes.  If @p is %NULL, krealloc()
- * behaves exactly like kmalloc().  If @new_size is 0 and @p is not a
- * %NULL pointer, the object pointed to is freed.
+ * lesser of the new and old sizes (__GFP_ZERO flag is effectively ignored).
+ * If @p is %NULL, krealloc() behaves exactly like kmalloc().  If @new_size
+ * is 0 and @p is not a %NULL pointer, the object pointed to is freed.
  *
  * Return: pointer to the allocated memory or %NULL in case of error
  */
-- 
2.29.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  reply	other threads:[~2020-11-09 11:08 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-09 11:06 [PATCH v3 0/9] slab: provide and use krealloc_array() Bartosz Golaszewski
2020-11-09 11:06 ` Bartosz Golaszewski
2020-11-09 11:06 ` Bartosz Golaszewski
2020-11-09 11:06 ` Bartosz Golaszewski [this message]
2020-11-09 11:06   ` [PATCH v3 1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 2/9] mm: slab: provide krealloc_array() Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 3/9] ALSA: pcm: use krealloc_array() Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 4/9] vhost: vringh: " Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 5/9] pinctrl: " Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-10 14:48   ` Linus Walleij
2020-11-10 14:48     ` Linus Walleij
2020-11-10 14:48     ` Linus Walleij
2020-11-10 14:48     ` Linus Walleij
2020-11-09 11:06 ` [PATCH v3 6/9] edac: ghes: " Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 7/9] drm: atomic: " Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 8/9] hwtracing: intel: " Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06 ` [PATCH v3 9/9] dma-buf: " Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski
2020-11-09 11:06   ` Bartosz Golaszewski

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