From nobody Thu Dec 18 03:19:09 2025 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 9DF3223CE for ; Wed, 5 Feb 2025 21:40:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738791620; cv=none; b=bKXPU9BOv63A5gFZWUNUAhDcPxvIKjP1DSH7oTqtj/NI0TJnfeaJ1VBMxkMvN16i9CmH3zgN2fT9xmfLZFpxgPeZVQm2Y0WHBTMd37F850wTFjQuCvCHa+SZOBws2vf7Q1UiIwULaYIw5UK7EGYNSTl8R8nXW/HpwLYoSfkM8gQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738791620; c=relaxed/simple; bh=hCmtyZG5wKHm5C3H2TnU//Dp8nTojDg4JmoDtBSEWWE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=P+y6IO1a+tIvYN3wduirrgZ6XIggEBtRrmM4dSle833HaGNPVfDiZlLBnJqLGyzssYzwjdTmnBKzLt8rTh9WrNCWOoOs/Cz6t+B1H6UVsjqWmT3om+zEz4oO8KIUHFEIbmOjfQ31MeyV6IsHy8hv7WriEm5Kk0W+oa1TEI/O6No= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a5U5xFly; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="a5U5xFly" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0497C4CED1; Wed, 5 Feb 2025 21:40:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738791620; bh=hCmtyZG5wKHm5C3H2TnU//Dp8nTojDg4JmoDtBSEWWE=; h=From:To:Cc:Subject:Date:From; b=a5U5xFlykrMhzv6xknoC+kWmdsa8Olj2Z3cPDjI1yXSjrA1zwtBy4VjILKTfQPwz7 7Na2qCWADG7CyVdx8wZPxF8W9St3Yqg9Jw35Fp0vVnR5iicg5+sGjXUKFtI83CpCpm YIUU4TWGDfYdGFdcKzteChi9aVFJ9/BkmjAH741ZoMDz230GVWwqoaQUEfhkJnC9R9 NfV/luLVONB3yUjvNaTMCwaX5QlN9fQWt6njevjxB034klzaY0k8eBVFwxCM3sontM VJoujdV6E76luIWcW9QEpfmwzx91o+zDngcm2NlzsvmqpU2IzOUAAc2fJTITzrbUx1 8hHJonrp0vnvA== From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim Subject: [PATCH] f2fs: add ioctl to get IO priority hint Date: Wed, 5 Feb 2025 21:40:14 +0000 Message-ID: <20250205214014.3270585-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.48.1.362.g079036d154-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" This patch adds an ioctl to give a per-file priority hint to attach REQ_PRIO. Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu --- fs/f2fs/data.c | 6 ++++++ fs/f2fs/f2fs.h | 7 +++++++ fs/f2fs/file.c | 20 ++++++++++++++++++++ include/uapi/linux/f2fs.h | 1 + 4 files changed, 34 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 07b46b444d31..24c5cb1f5ada 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -413,6 +413,7 @@ int f2fs_target_device_index(struct f2fs_sb_info *sbi, = block_t blkaddr) static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fio) { unsigned int temp_mask =3D GENMASK(NR_TEMP_TYPE - 1, 0); + struct folio *fio_folio =3D page_folio(fio->page); unsigned int fua_flag, meta_flag, io_flag; blk_opf_t op_flags =3D 0; =20 @@ -438,6 +439,11 @@ static blk_opf_t f2fs_io_flags(struct f2fs_io_info *fi= o) op_flags |=3D REQ_META; if (BIT(fio->temp) & fua_flag) op_flags |=3D REQ_FUA; + + if (fio->type =3D=3D DATA && + F2FS_I(fio_folio->mapping->host)->ioprio_hint =3D=3D F2FS_IOPRIO_WRIT= E) + op_flags |=3D REQ_PRIO; + return op_flags; } =20 diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index bd0d8138b71d..c0a5f0df8781 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -816,6 +816,12 @@ enum { FI_MAX, /* max flag, never be used */ }; =20 +/* used for f2fs_inode_info->ioprio_hint. */ +enum { + F2FS_IOPRIO_WRITE =3D 1, /* high write priority */ + F2FS_IOPRIO_MAX, +}; + struct f2fs_inode_info { struct inode vfs_inode; /* serve a vfs inode */ unsigned long i_flags; /* keep an inode flags for ioctl */ @@ -830,6 +836,7 @@ struct f2fs_inode_info { =20 /* Use below internally in f2fs*/ unsigned long flags[BITS_TO_LONGS(FI_MAX)]; /* use to pass per-file flags= */ + unsigned int ioprio_hint; /* hint for IO priority */ struct f2fs_rwsem i_sem; /* protect fi info */ atomic_t dirty_pages; /* # of dirty pages */ f2fs_hash_t chash; /* hash value of given file name */ diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 642b8d85a035..2f93a27d2f45 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -3503,6 +3503,23 @@ static int f2fs_ioc_get_dev_alias_file(struct file *= filp, unsigned long arg) (u32 __user *)arg); } =20 +static int f2fs_ioc_io_prio(struct file *filp, unsigned long arg) +{ + struct inode *inode =3D file_inode(filp); + __u32 level; + + if (get_user(level, (__u32 __user *)arg)) + return -EFAULT; + + if (!S_ISREG(inode->i_mode) || level >=3D F2FS_IOPRIO_MAX) + return -EINVAL; + + inode_lock(inode); + F2FS_I(inode)->ioprio_hint =3D level; + inode_unlock(inode); + return 0; +} + int f2fs_precache_extents(struct inode *inode) { struct f2fs_inode_info *fi =3D F2FS_I(inode); @@ -4606,6 +4623,8 @@ static long __f2fs_ioctl(struct file *filp, unsigned = int cmd, unsigned long arg) return f2fs_ioc_compress_file(filp); case F2FS_IOC_GET_DEV_ALIAS_FILE: return f2fs_ioc_get_dev_alias_file(filp, arg); + case F2FS_IOC_IO_PRIO: + return f2fs_ioc_io_prio(filp, arg); default: return -ENOTTY; } @@ -5321,6 +5340,7 @@ long f2fs_compat_ioctl(struct file *file, unsigned in= t cmd, unsigned long arg) case F2FS_IOC_DECOMPRESS_FILE: case F2FS_IOC_COMPRESS_FILE: case F2FS_IOC_GET_DEV_ALIAS_FILE: + case F2FS_IOC_IO_PRIO: break; default: return -ENOIOCTLCMD; diff --git a/include/uapi/linux/f2fs.h b/include/uapi/linux/f2fs.h index cd38a7c166e6..fb2f85b3c540 100644 --- a/include/uapi/linux/f2fs.h +++ b/include/uapi/linux/f2fs.h @@ -46,6 +46,7 @@ #define F2FS_IOC_GET_DEV_ALIAS_FILE _IOR(F2FS_IOCTL_MAGIC, 26, __u32) #define F2FS_IOC_DONATE_RANGE _IOW(F2FS_IOCTL_MAGIC, 27, \ struct f2fs_donate_range) +#define F2FS_IOC_IO_PRIO _IOW(F2FS_IOCTL_MAGIC, 28, __u32) =20 /* * should be same as XFS_IOC_GOINGDOWN. --=20 2.48.1.362.g079036d154-goog