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Wed, 9 Apr 2025 07:41:26 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id TsQDKqYk9mciTwAAD6G6ig (envelope-from ); Wed, 09 Apr 2025 07:41:26 +0000 Date: Wed, 9 Apr 2025 09:41:25 +0200 From: Oscar Salvador To: Frank van der Linden Cc: akpm@linux-foundation.org, muchun.song@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, david@redhat.com, luizcap@redhat.com Subject: Re: [PATCH] mm/hugetlb: use separate nodemask for bootmem allocations Message-ID: References: <20250402205613.3086864-1-fvdl@google.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: X-Rspamd-Queue-Id: 386F02116D X-Spam-Level: X-Spamd-Result: default: False [-4.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; MISSING_XM_UA(0.00)[]; RCPT_COUNT_SEVEN(0.00)[7]; MIME_TRACE(0.00)[0:+]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim]; DKIM_TRACE(0.00)[suse.de:+] X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Score: -4.51 X-Spam-Flag: NO On Tue, Apr 08, 2025 at 08:48:33AM -0700, Frank van der Linden wrote: > next_nid_to_alloc is used to remember the last node that was allocated > from in __alloc_bootmem_huge_page(), so that the next call will > continue at the node after the one that was successfully allocated > from. The code there looks a bit confusing, since the macro > for_each_node_mask_to_alloc is used there not really as a for loop, > but simply as a way of saying "try this node and remember the next > one". Yes, this makes sense, thanks for explaining Frank :-) -- Oscar Salvador SUSE Labs