From patchwork Tue Nov 14 21:40:57 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: 13456029 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 A40052FC5F; Tue, 14 Nov 2023 21:42:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4DF49D5; Tue, 14 Nov 2023 13:42:05 -0800 (PST) Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-1cc3c51f830so47310305ad.1; Tue, 14 Nov 2023 13:42:05 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699998125; x=1700602925; 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=qNyo/5GtfbZEm3qkTN5J6CCReaJlJFArmEnNenmgc8I=; b=vLyI7K0qXkZLhsIxpJahj2pBWkIrMHKTNKA/bSZ5dhHX8TKXjtv52HPYqemWOAMOmk NjOCZJfnTH0KVgkCj4m4X1gIQIH2bQwtGDEajGuoTiztyKn111iCGD6Svp1JU8m1Fpyo 59+XJjaLHFDZeDffJiZn3bwy3AdfYvMbVYBdNd4MSbru9HDSf6dgfKhroK4ubU/ecZGX rpkD6BmE11eR2uCw55OC19qxoHC51D1b8CAynRBbsSw2TleRY5IHmig52eyRW5uEQNwb Vn6/YS6reFGb0wIfPy0tv+ix8ZRTL8I149N0PF7Y5nT5ILso8PVc2+QkDLGwmZKVyx+X tgBQ== X-Gm-Message-State: AOJu0YzECy6kIn7KS5hoC567bvoBvAZHQftAf1C5d4gP23Pr4cEpCGrl bcaN1dKYhdJJ9lHcQCcwxxJhEzgewuRzrA== X-Google-Smtp-Source: AGHT+IFZMWVmvT1GgsNdUHNh34MuHVJFEJpVpgN7PNROe8hk5e76XAse98jqIWZBy28ErTQQ6ejmoA== X-Received: by 2002:a17:902:ea10:b0:1cc:51ca:52e5 with SMTP id s16-20020a170902ea1000b001cc51ca52e5mr3882941plg.44.1699998124694; Tue, 14 Nov 2023 13:42:04 -0800 (PST) Received: from bvanassche-linux.mtv.corp.google.com ([2620:0:1000:8411:2278:ad72:cefb:4d49]) by smtp.gmail.com with ESMTPSA id o16-20020a170902d4d000b001c3267ae317sm6133926plg.165.2023.11.14.13.42.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 13:42:04 -0800 (PST) From: Bart Van Assche To: "Martin K . Petersen" Cc: linux-scsi@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , Christoph Hellwig , Daejun Park , Kanchan Joshi , Bart Van Assche , Jan Kara , Christian Brauner , Jaegeuk Kim , Chao Yu , Jeff Layton , Chuck Lever , Alexander Viro Subject: [PATCH v4 02/15] fs: Move enum rw_hint into a new header file Date: Tue, 14 Nov 2023 13:40:57 -0800 Message-ID: <20231114214132.1486867-3-bvanassche@acm.org> X-Mailer: git-send-email 2.43.0.rc0.421.g78406f8d94-goog In-Reply-To: <20231114214132.1486867-1-bvanassche@acm.org> References: <20231114214132.1486867-1-bvanassche@acm.org> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 9043cedfa12b..8e0c66a6b097 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 c80a6acad742..880828e14420 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 7965d5e07012..e9ae2199d67b 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 59f9de9df0fe..a08014b68d6e 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_0 = 0, - WRITE_LIFE_1 = RWH_WRITE_LIFE_NONE, - WRITE_LIFE_2 = RWH_WRITE_LIFE_SHORT, - WRITE_LIFE_3 = RWH_WRITE_LIFE_MEDIUM, - WRITE_LIFE_4 = RWH_WRITE_LIFE_LONG, - WRITE_LIFE_5 = 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..f172efb09655 --- /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_0 = 0, /* RWH_WRITE_LIFE_NOT_SET */ + WRITE_LIFE_1 = 1, /* RWH_WRITE_LIFE_NONE */ + WRITE_LIFE_2 = 2, /* RWH_WRITE_LIFE_SHORT */ + WRITE_LIFE_3 = 3, /* RWH_WRITE_LIFE_MEDIUM */ + WRITE_LIFE_4 = 4, /* RWH_WRITE_LIFE_LONG */ + WRITE_LIFE_5 = 5, /* RWH_WRITE_LIFE_EXTREME */ +} __packed; + +static_assert(sizeof(enum rw_hint) == 1); + +#endif /* _LINUX_RW_HINT_H */