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Wed, 29 Apr 2026 01:58:47 -0700 (PDT) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Wed, 29 Apr 2026 10:58:46 +0200 To: Vlastimil Babka Cc: "Uladzislau Rezki (Sony)" , Herbert Xu , linux-crypto@vger.kernel.org, "Harry Yoo (Oracle)" , LKML , Andrew Morton , Hao Li Subject: Re: [PATCH 1/2] mm/slab: Add kvfree_atomic() helper Message-ID: References: <20260428161419.94695-1-urezki@gmail.com> <2d996917-60bb-4ef9-b397-65decf3b296d@suse.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2d996917-60bb-4ef9-b397-65decf3b296d@suse.com> On Wed, Apr 29, 2026 at 10:28:02AM +0200, Vlastimil Babka wrote: > +Cc SLAB maintainers. Please use get_maintainers.pl next time. > > On 4/28/26 18:14, Uladzislau Rezki (Sony) wrote: > > kvmalloc() now supports non-sleeping GFP flags, including > > the vmalloc fallback path. This means it may return vmalloc > > memory even for GFP_ATOMIC and GFP_NOWAIT allocations. > > > > Freeing such memory with kvfree() may then end up calling > > vfree(), which is not safe for non-sleeping contexts. > > > > Introduce kvfree_atomic() helper for such cases. It mirrors > > kvfree(), but uses vfree_atomic() for vmalloced memory. > > > > Signed-off-by: Uladzislau Rezki (Sony) > > Acked-by: Vlastimil Babka (SUSE) > Thank you and thank you for adding SLAB maintainers! -- Uladzislau Rezki