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[v3,1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO

Message ID 20201109110654.12547-2-brgl@bgdev.pl
State New
Headers show
Series [v3,1/9] mm: slab: clarify krealloc()'s behavior with __GFP_ZERO | expand

Commit Message

Bartosz Golaszewski Nov. 9, 2020, 11:06 a.m. UTC 
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(-)
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Patch

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
  */