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[2003:f6:f706:8b00:fa63:3fff:fe02:74c]) by smtp.gmail.com with ESMTPSA id o10-20020a05600c510a00b004148a5e3188sm5519570wms.25.2024.03.28.06.56.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Mar 2024 06:56:37 -0700 (PDT) From: Johannes Thumshirn Date: Thu, 28 Mar 2024 14:56:33 +0100 Subject: [PATCH RFC PATCH 3/3] btrfs: zoned: kick cleaner kthread if low on space Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240328-hans-v1-3-4cd558959407@kernel.org> References: <20240328-hans-v1-0-4cd558959407@kernel.org> In-Reply-To: <20240328-hans-v1-0-4cd558959407@kernel.org> To: Chris Mason , Josef Bacik , David Sterba Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, Hans Holmberg , Naohiro Aota , hch@lst.de, Damien LeMoal , Boris Burkov , Johannes Thumshirn X-Mailer: b4 0.12.4 From: Johannes Thumshirn Kick the cleaner kthread on chunk allocation if we're slowly running out of usable space on a zoned filesystem. Signed-off-by: Johannes Thumshirn --- fs/btrfs/zoned.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index fb8707f4cab5..25c1a17873db 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -1040,6 +1040,7 @@ int btrfs_reset_sb_log_zones(struct block_device *bdev, int mirror) u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start, u64 hole_end, u64 num_bytes) { + struct btrfs_fs_info *fs_info = device->fs_info; struct btrfs_zoned_device_info *zinfo = device->zone_info; const u8 shift = zinfo->zone_size_shift; u64 nzones = num_bytes >> shift; @@ -1051,6 +1052,11 @@ u64 btrfs_find_allocatable_zones(struct btrfs_device *device, u64 hole_start, ASSERT(IS_ALIGNED(hole_start, zinfo->zone_size)); ASSERT(IS_ALIGNED(num_bytes, zinfo->zone_size)); + if (!test_bit(BTRFS_FS_CLEANER_RUNNING, &fs_info->flags) && + btrfs_zoned_should_reclaim(fs_info)) { + wake_up_process(fs_info->cleaner_kthread); + } + while (pos < hole_end) { begin = pos >> shift; end = begin + nzones;