From: Jaegeuk Kim <jaegeuk@kernel.org> To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim <jaegeuk@kernel.org> Subject: [PATCH] f2fs: provide a way to attach HIPRI for Direct IO Date: Mon, 8 Nov 2021 18:13:36 -0800 [thread overview] Message-ID: <20211109021336.3796538-1-jaegeuk@kernel.org> (raw) This patch adds a way to attach HIPRI by expanding the existing sysfs's data_io_flag. User can measure IO performance by enabling it. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- Documentation/ABI/testing/sysfs-fs-f2fs | 16 +++++++++------- fs/f2fs/data.c | 2 ++ fs/f2fs/f2fs.h | 3 +++ 3 files changed, 14 insertions(+), 7 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index b268e3e18b4a..ac52e1c6bcbc 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -369,13 +369,15 @@ Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Give a way to attach REQ_META|FUA to data writes given temperature-based bits. Now the bits indicate: - +-------------------+-------------------+ - | REQ_META | REQ_FUA | - +------+------+-----+------+------+-----+ - | 5 | 4 | 3 | 2 | 1 | 0 | - +------+------+-----+------+------+-----+ - | Cold | Warm | Hot | Cold | Warm | Hot | - +------+------+-----+------+------+-----+ + +------------+-------------------+-------------------+ + | HIPRI_DIO | REQ_META | REQ_FUA | + +------------+------+------+-----+------+------+-----+ + | 6 | 5 | 4 | 3 | 2 | 1 | 0 | + +------------+------+------+-----+------+------+-----+ + | All | Cold | Warm | Hot | Cold | Warm | Hot | + +------------+------+------+-----+------+------+-----+ + + Note that, HIPRI_DIO bit is only for direct IO path. What: /sys/fs/f2fs/<disk>/node_io_flag Date: June 2020 diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 9f754aaef558..faa40aca2848 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -3707,6 +3707,8 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) if (do_opu) down_read(&fi->i_gc_rwsem[READ]); } + if (sbi->data_io_flag & HIPRI_DIO) + iocb->ki_flags |= IOCB_HIPRI; err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, rw == WRITE ? get_data_block_dio_write : diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index ce9fc9f13000..094f1e8ff82b 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1557,6 +1557,9 @@ struct decompress_io_ctx { #define MAX_COMPRESS_LOG_SIZE 8 #define MAX_COMPRESS_WINDOW_SIZE(log_size) ((PAGE_SIZE) << (log_size)) +/* HIPRI for direct IO used in sysfs/data_io_flag */ +#define HIPRI_DIO (1 << 6) + struct f2fs_sb_info { struct super_block *sb; /* pointer to VFS super block */ struct proc_dir_entry *s_proc; /* proc entry */ -- 2.34.0.rc0.344.g81b53c2807-goog
WARNING: multiple messages have this Message-ID (diff)
From: Jaegeuk Kim <jaegeuk@kernel.org> To: linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim <jaegeuk@kernel.org> Subject: [f2fs-dev] [PATCH] f2fs: provide a way to attach HIPRI for Direct IO Date: Mon, 8 Nov 2021 18:13:36 -0800 [thread overview] Message-ID: <20211109021336.3796538-1-jaegeuk@kernel.org> (raw) This patch adds a way to attach HIPRI by expanding the existing sysfs's data_io_flag. User can measure IO performance by enabling it. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- Documentation/ABI/testing/sysfs-fs-f2fs | 16 +++++++++------- fs/f2fs/data.c | 2 ++ fs/f2fs/f2fs.h | 3 +++ 3 files changed, 14 insertions(+), 7 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index b268e3e18b4a..ac52e1c6bcbc 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -369,13 +369,15 @@ Contact: "Jaegeuk Kim" <jaegeuk@kernel.org> Description: Give a way to attach REQ_META|FUA to data writes given temperature-based bits. Now the bits indicate: - +-------------------+-------------------+ - | REQ_META | REQ_FUA | - +------+------+-----+------+------+-----+ - | 5 | 4 | 3 | 2 | 1 | 0 | - +------+------+-----+------+------+-----+ - | Cold | Warm | Hot | Cold | Warm | Hot | - +------+------+-----+------+------+-----+ + +------------+-------------------+-------------------+ + | HIPRI_DIO | REQ_META | REQ_FUA | + +------------+------+------+-----+------+------+-----+ + | 6 | 5 | 4 | 3 | 2 | 1 | 0 | + +------------+------+------+-----+------+------+-----+ + | All | Cold | Warm | Hot | Cold | Warm | Hot | + +------------+------+------+-----+------+------+-----+ + + Note that, HIPRI_DIO bit is only for direct IO path. What: /sys/fs/f2fs/<disk>/node_io_flag Date: June 2020 diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 9f754aaef558..faa40aca2848 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -3707,6 +3707,8 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) if (do_opu) down_read(&fi->i_gc_rwsem[READ]); } + if (sbi->data_io_flag & HIPRI_DIO) + iocb->ki_flags |= IOCB_HIPRI; err = __blockdev_direct_IO(iocb, inode, inode->i_sb->s_bdev, iter, rw == WRITE ? get_data_block_dio_write : diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index ce9fc9f13000..094f1e8ff82b 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1557,6 +1557,9 @@ struct decompress_io_ctx { #define MAX_COMPRESS_LOG_SIZE 8 #define MAX_COMPRESS_WINDOW_SIZE(log_size) ((PAGE_SIZE) << (log_size)) +/* HIPRI for direct IO used in sysfs/data_io_flag */ +#define HIPRI_DIO (1 << 6) + struct f2fs_sb_info { struct super_block *sb; /* pointer to VFS super block */ struct proc_dir_entry *s_proc; /* proc entry */ -- 2.34.0.rc0.344.g81b53c2807-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
next reply other threads:[~2021-11-09 2:13 UTC|newest] Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-11-09 2:13 Jaegeuk Kim [this message] 2021-11-09 2:13 ` [f2fs-dev] [PATCH] f2fs: provide a way to attach HIPRI for Direct IO Jaegeuk Kim 2021-11-09 14:13 ` Chao Yu 2021-11-09 14:13 ` Chao Yu 2021-11-09 16:39 ` Christoph Hellwig 2021-11-09 16:39 ` [f2fs-dev] " Christoph Hellwig 2021-11-09 16:42 ` Jens Axboe 2021-11-09 16:42 ` [f2fs-dev] " Jens Axboe 2021-11-10 19:08 ` Jaegeuk Kim 2021-11-10 19:08 ` [f2fs-dev] " Jaegeuk Kim 2021-11-11 0:26 ` Jens Axboe 2021-11-11 0:26 ` [f2fs-dev] " Jens Axboe
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