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Sat, 28 Feb 2026 00:23:30 +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 qunAEYI1omkgbgAAD6G6ig (envelope-from ) for ; Sat, 28 Feb 2026 00:23:30 +0000 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 0/2] btrfs: fix unpaired compr folio allocation/freeing Date: Sat, 28 Feb 2026 10:53:10 +1030 Message-ID: X-Mailer: git-send-email 2.53.0 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 [-3.01 / 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)[]; R_DKIM_ALLOW(-0.20)[suse.com:s=susede1]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; RCPT_COUNT_ONE(0.00)[1]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; DKIM_TRACE(0.00)[suse.com:+]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCVD_TLS_ALL(0.00)[]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[linux-btrfs@vger.kernel.org]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:104:10:150:64:97:from,2a07:de40:b281:106:10:150:64:167:received]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:dkim,suse.com:mid,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns] X-Rspamd-Action: no action X-Spam-Flag: NO X-Spam-Score: -3.01 X-Spam-Level: X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Queue-Id: 50FC23F9BB With the recent *_compressed_bio() rework, we're using compressed_bio everywhere for reads/writes (including regular and encoded). However this requires us to allocate/free folios using btrfs_alloc_compr_folio() and btrfs_free_compr_folio(). Not using the later to release a folio allocated by btrfs_alloc_compr_folio() can screw up the LRU list. Fix the unpaired calls as a hot fix. For the long run, I'd like to remove btrfs_(alloc|free)_compr_folios() with regular folio_(alloc|put)() instead. As I do not think the compr pool is that helpful compared to the extra maintanance needed. Qu Wenruo (2): btrfs: fix the incorrect freeing of a compression folio in btrfs_submit_compressed_read() btrfs: fix the incorrect freeing of a compression folio in btrfs_do_encoded_write() fs/btrfs/compression.c | 2 +- fs/btrfs/inode.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) -- 2.53.0