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Wed, 4 Jun 2025 09:29:21 +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 U73sBvERQGiYEwAAD6G6ig (envelope-from ); Wed, 04 Jun 2025 09:29:21 +0000 From: David Sterba To: linux-btrfs@vger.kernel.org Cc: David Sterba Subject: [PATCH 0/3 v2] Switch to on-stack variables for block reserves Date: Wed, 4 Jun 2025 11:29:18 +0200 Message-ID: X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.983]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWO(0.00)[2]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; FUZZY_BLOCKED(0.00)[rspamd.com]; 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.com:mid]; RCVD_TLS_ALL(0.00)[] X-Spam-Level: X-Spam-Flag: NO X-Spam-Score: -2.80 The block reserve structure is small enough to fit on stack so do that in a few functions and avoid allocation. v2: - drop patch replacing allocated reserve in relocation, crash in btrfs/190 - v1 https://lore.kernel.org/linux-btrfs/cover.1695408280.git.dsterba@suse.com/ David Sterba (3): btrfs: use on-stack variable for block reserve in btrfs_evict_inode() btrfs: use on-stack variable for block reserve in btrfs_truncate() btrfs: use on-stack variable for block reserve in btrfs_replace_file_extents() fs/btrfs/file.c | 29 ++++++++++++----------------- fs/btrfs/inode.c | 47 ++++++++++++++++++++++------------------------- 2 files changed, 34 insertions(+), 42 deletions(-) -- 2.47.1