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Tue, 21 Jul 2026 02:58:13 +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 wN4mBEXgXmpIHgAAD6G6ig (envelope-from ); Tue, 21 Jul 2026 02:58:13 +0000 Date: Tue, 21 Jul 2026 04:58:11 +0200 From: David Sterba To: Andrey Albershteyn Cc: linux-xfs@vger.kernel.org, fsverity@lists.linux.dev, linux-fsdevel@vger.kernel.org, ebiggers@kernel.org, hch@lst.de, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-btrfs@vger.kernel.org, djwong@kernel.org Subject: Re: [PATCH v12 03/21] fsverity: pass digest size and hash of the all-zeroes block to ->write Message-ID: <20260721025811.GF10684@twin.jikos.cz> Reply-To: dsterba@suse.cz References: <20260720090410.3487990-1-aalbersh@kernel.org> <20260720090410.3487990-4-aalbersh@kernel.org> Precedence: bulk X-Mailing-List: linux-ext4@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: <20260720090410.3487990-4-aalbersh@kernel.org> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) X-Rspamd-Action: no action X-Rspamd-Queue-Id: 282887A33E X-Spam-Flag: NO X-Spam-Score: -4.21 X-Spam-Level: X-Spamd-Result: default: False [-4.21 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; HAS_REPLYTO(0.30)[dsterba@suse.cz]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-0.996]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; REPLYTO_DOM_NEQ_TO_DOM(0.00)[]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_SEVEN(0.00)[10]; REPLYTO_ADDR_EQ_FROM(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:replyto,suse.cz:dkim,suse.com:email]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.cz:+] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org On Mon, Jul 20, 2026 at 11:03:31AM +0200, Andrey Albershteyn wrote: > Let filesystem iterate over hashes in the block and check if these are > hashes of zeroed data blocks. XFS will use this to decide if it want to > store tree block full of these hashes. > > Signed-off-by: Andrey Albershteyn > Reviewed-by: "Darrick J. Wong" > Acked-by: Eric Biggers > --- > fs/btrfs/verity.c | 6 +++++- Acked-by: David Sterba