From patchwork Wed Dec 13 04:00:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 13490306 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4D831BE5F; Wed, 13 Dec 2023 04:01:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="N0xUrrho" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB210C433CA; Wed, 13 Dec 2023 04:01:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1702440075; bh=MXkG62tBxNzKaC2hGyVPIcOh4y8FqN22hk/A2QkDrYY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N0xUrrhoiFunIf+5zqQPPouKtbxCTpPg4bawzEMB8tUSfJSn2kq/eOa67HjGtSrJ0 mB5Fb0H8YhUa6d6/4zbx1dM9tTktsZkfqfAcgT+HPXZjqrsRNoLorvOgSdeapMhd/g WOXEnXI6sK/GP09CfVUBpkcOW13moSS+9Ui3mLTFBJIf63mQJ3sSAqwIAGoVnyL8V0 0GMgkr+dfXSHy8FGSZMwDTZSLwTJLQ00NmN2evgwWALBUpXGzkzCkOsAja9vEz2rnE pBRklcQXiUyo6e5Jf1eHb6cgyCpACwwqXF84YocufKt733Y9wOxdZkfRIeMiu9F/Mq ELzyK6geMFU4A== From: Eric Biggers To: linux-fsdevel@vger.kernel.org Cc: linux-fscrypt@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, Josef Bacik , Christoph Hellwig Subject: [PATCH 2/3] f2fs: move release of block devices to after kill_block_super() Date: Tue, 12 Dec 2023 20:00:17 -0800 Message-ID: <20231213040018.73803-3-ebiggers@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231213040018.73803-1-ebiggers@kernel.org> References: <20231213040018.73803-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Eric Biggers Call destroy_device_list() and free the f2fs_sb_info from kill_f2fs_super(), after the call to kill_block_super(). This is necessary to order it after the call to fscrypt_destroy_keyring() once generic_shutdown_super() starts calling fscrypt_destroy_keyring() just after calling ->put_super. This is because fscrypt_destroy_keyring() may call into f2fs_get_devices() via the fscrypt_operations. Signed-off-by: Eric Biggers --- fs/f2fs/super.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 033af907c3b1d..ba95a341a9a36 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1710,42 +1710,39 @@ static void f2fs_put_super(struct super_block *sb) f2fs_destroy_node_manager(sbi); f2fs_destroy_segment_manager(sbi); /* flush s_error_work before sbi destroy */ flush_work(&sbi->s_error_work); f2fs_destroy_post_read_wq(sbi); kvfree(sbi->ckpt); - sb->s_fs_info = NULL; if (sbi->s_chksum_driver) crypto_free_shash(sbi->s_chksum_driver); kfree(sbi->raw_super); - destroy_device_list(sbi); f2fs_destroy_page_array_cache(sbi); f2fs_destroy_xattr_caches(sbi); mempool_destroy(sbi->write_io_dummy); #ifdef CONFIG_QUOTA for (i = 0; i < MAXQUOTAS; i++) kfree(F2FS_OPTION(sbi).s_qf_names[i]); #endif fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); destroy_percpu_info(sbi); f2fs_destroy_iostat(sbi); for (i = 0; i < NR_PAGE_TYPE; i++) kvfree(sbi->write_io[i]); #if IS_ENABLED(CONFIG_UNICODE) utf8_unload(sb->s_encoding); #endif - kfree(sbi); } int f2fs_sync_fs(struct super_block *sb, int sync) { struct f2fs_sb_info *sbi = F2FS_SB(sb); int err = 0; if (unlikely(f2fs_cp_error(sbi))) return 0; if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) @@ -4895,23 +4892,23 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) } static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); } static void kill_f2fs_super(struct super_block *sb) { - if (sb->s_root) { - struct f2fs_sb_info *sbi = F2FS_SB(sb); + struct f2fs_sb_info *sbi = F2FS_SB(sb); + if (sb->s_root) { set_sbi_flag(sbi, SBI_IS_CLOSE); f2fs_stop_gc_thread(sbi); f2fs_stop_discard_thread(sbi); #ifdef CONFIG_F2FS_FS_COMPRESSION /* * latter evict_inode() can bypass checking and invalidating * compress inode cache. */ if (test_opt(sbi, COMPRESS_CACHE)) @@ -4924,20 +4921,25 @@ static void kill_f2fs_super(struct super_block *sb) .reason = CP_UMOUNT, }; stat_inc_cp_call_count(sbi, TOTAL_CALL); f2fs_write_checkpoint(sbi, &cpc); } if (is_sbi_flag_set(sbi, SBI_IS_RECOVERED) && f2fs_readonly(sb)) sb->s_flags &= ~SB_RDONLY; } kill_block_super(sb); + if (sbi) { + destroy_device_list(sbi); + kfree(sbi); + sb->s_fs_info = NULL; + } } static struct file_system_type f2fs_fs_type = { .owner = THIS_MODULE, .name = "f2fs", .mount = f2fs_mount, .kill_sb = kill_f2fs_super, .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, }; MODULE_ALIAS_FS("f2fs");