From patchwork Tue Oct 17 20:47:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13426071 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5E73CC46CA1 for ; Tue, 17 Oct 2023 20:48:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234861AbjJQUsU (ORCPT ); Tue, 17 Oct 2023 16:48:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230056AbjJQUsT (ORCPT ); Tue, 17 Oct 2023 16:48:19 -0400 Received: from mail-pf1-f172.google.com (mail-pf1-f172.google.com [209.85.210.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70C2CED; Tue, 17 Oct 2023 13:48:18 -0700 (PDT) Received: by mail-pf1-f172.google.com with SMTP id d2e1a72fcca58-6b709048f32so3130633b3a.0; Tue, 17 Oct 2023 13:48:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697575698; x=1698180498; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=yoHPYDQbTkwUBMMunMv9kXgtGCryiEzUWGYqg25wuEw=; b=S+3GwpSZI88XIlFDGt7RMfiqSVDPkaZp+yMnkM0kPsx+MZDc6xZIH/2DBmxVwuGSHk n/G4KQIu8vc+LazMn0yBmmRgVhGB2UGdZ4nzJnRqZhuuCodJv5dOANEzVXsczEzSLn0V k5kp9ZV8rlSD9CsmVhMvBW1Pj3aiJK+Y0T+Ng5OTeeiab612tXZ8Sfe+KImPxwERW1mi 2OkiPBfzvSnuIBw28yFTQD7YxE4gmGFI38c1KgrgywSzaKL0Qbx3ClF6Cdzp6bvMH6jw bLXyiodnz/lB5vs71SS8VSzhpF3p1YCZ3E42gf473gqfsZSm4PIRO1zOHayFbaoyj/lD mpWA== X-Gm-Message-State: AOJu0YxRFuZ8bYFhpVw5k5dP7LwU0yxGJgtdEx3doUUr7Hf0lEcNm28M 6CXncvD8Fazp8Ydau268C88= X-Google-Smtp-Source: AGHT+IGGo232JgEpvGCW1xTE/zif4CZSXY7EyIlhzXdDHgWYzLvrFd1xG6e4xQ2gZEvytT8a+UK0wg== X-Received: by 2002:a05:6a00:230b:b0:68b:c562:da65 with SMTP id h11-20020a056a00230b00b0068bc562da65mr3422101pfh.26.1697575697688; Tue, 17 Oct 2023 13:48:17 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:8f02:2919:9600:ac09]) by smtp.gmail.com with ESMTPSA id fa36-20020a056a002d2400b006b2e07a6235sm1874704pfb.136.2023.10.17.13.48.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Oct 2023 13:48:17 -0700 (PDT) From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Martin K . Petersen" , Christoph Hellwig , Niklas Cassel , Avri Altman , Bean Huo , Daejun Park , Bart Van Assche , Jan Kara , Christian Brauner , Jaegeuk Kim , Chao Yu , Alexander Viro , Jeff Layton , Chuck Lever Subject: [PATCH v3 01/14] fs: Move enum rw_hint into a new header file Date: Tue, 17 Oct 2023 13:47:09 -0700 Message-ID: <20231017204739.3409052-2-bvanassche@acm.org> X-Mailer: git-send-email 2.42.0.655.g421f12c284-goog In-Reply-To: <20231017204739.3409052-1-bvanassche@acm.org> References: <20231017204739.3409052-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Move enum rw_hint into a new header file to prepare for using this data type in the block layer. Add the attribute __packed to reduce the space occupied by instances of this data type from four bytes to one byte. Change the data type of i_write_hint from u8 into enum rw_hint. Change the RWH_* constants into literal constants to prevent that would have to be included. Cc: Jan Kara Cc: Christoph Hellwig Cc: Christian Brauner Signed-off-by: Bart Van Assche --- fs/f2fs/f2fs.h | 1 + fs/fcntl.c | 1 + fs/inode.c | 1 + include/linux/fs.h | 16 ++-------------- include/linux/rw_hint.h | 20 ++++++++++++++++++++ 5 files changed, 25 insertions(+), 14 deletions(-) create mode 100644 include/linux/rw_hint.h diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6d688e42d89c..56ee7fff55c7 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -24,6 +24,7 @@ #include #include #include +#include #include #include diff --git a/fs/fcntl.c b/fs/fcntl.c index e871009f6c88..ed923640aecf 100644 --- a/fs/fcntl.c +++ b/fs/fcntl.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include diff --git a/fs/inode.c b/fs/inode.c index 84bc3c76e5cc..ebcc41ac9682 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include "internal.h" diff --git a/include/linux/fs.h b/include/linux/fs.h index b528f063e8ff..971f0bafa782 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -43,6 +43,7 @@ #include #include #include +#include #include #include @@ -309,19 +310,6 @@ struct address_space; struct writeback_control; struct readahead_control; -/* - * Write life time hint values. - * Stored in struct inode as u8. - */ -enum rw_hint { - WRITE_LIFE_NOT_SET = 0, - WRITE_LIFE_NONE = RWH_WRITE_LIFE_NONE, - WRITE_LIFE_SHORT = RWH_WRITE_LIFE_SHORT, - WRITE_LIFE_MEDIUM = RWH_WRITE_LIFE_MEDIUM, - WRITE_LIFE_LONG = RWH_WRITE_LIFE_LONG, - WRITE_LIFE_EXTREME = RWH_WRITE_LIFE_EXTREME, -}; - /* Match RWF_* bits to IOCB bits */ #define IOCB_HIPRI (__force int) RWF_HIPRI #define IOCB_DSYNC (__force int) RWF_DSYNC @@ -677,7 +665,7 @@ struct inode { spinlock_t i_lock; /* i_blocks, i_bytes, maybe i_size */ unsigned short i_bytes; u8 i_blkbits; - u8 i_write_hint; + enum rw_hint i_write_hint; blkcnt_t i_blocks; #ifdef __NEED_I_SIZE_ORDERED diff --git a/include/linux/rw_hint.h b/include/linux/rw_hint.h new file mode 100644 index 000000000000..4a7d28945973 --- /dev/null +++ b/include/linux/rw_hint.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_RW_HINT_H +#define _LINUX_RW_HINT_H + +#include +#include + +/* Block storage write lifetime hint values. */ +enum rw_hint { + WRITE_LIFE_NOT_SET = 0, /* RWH_WRITE_LIFE_NOT_SET */ + WRITE_LIFE_NONE = 1, /* RWH_WRITE_LIFE_NONE */ + WRITE_LIFE_SHORT = 2, /* RWH_WRITE_LIFE_SHORT */ + WRITE_LIFE_MEDIUM = 3, /* RWH_WRITE_LIFE_MEDIUM */ + WRITE_LIFE_LONG = 4, /* RWH_WRITE_LIFE_LONG */ + WRITE_LIFE_EXTREME = 5, /* RWH_WRITE_LIFE_EXTREME */ +} __packed; + +static_assert(sizeof(enum rw_hint) == 1); + +#endif /* _LINUX_RW_HINT_H */