From: Kanchan Joshi <joshi.k@samsung.com>
To: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org,
linux-ext4@vger.kernel.org
Cc: prakash.v@samsung.com, Kanchan Joshi <joshi.k@samsung.com>
Subject: [PATCH v4 0/7] Extend write-hint/stream infrastructure
Date: Wed, 17 Apr 2019 23:19:59 +0530 [thread overview]
Message-ID: <1555523406-2380-1-git-send-email-joshi.k@samsung.com> (raw)
In-Reply-To: CGME20190417175347epcas2p41e4240ab83b46c9f07d237fc9494903a@epcas2p4.samsung.com
V4 series, towards extending write-hint/streams infrastucture so that file-systems
and other kernel-mode components can use write-hints which are separate from
user-space ones. Also this introduces support for sending write-hint with
Ext4/JBD2 journal.
Here is the changelog/history -
Changes since v3:
- Correction in grouping related changes into patches
- Rectification in commit text at places
Changes since v2:
- Introduce API in block layer so that drivers can register stream info. Added
new limit in request queue for this purpose.
- Block layer does the conversion from write-hint to stream-id.
- Any write-hint beyond registered limit turn to 0.
- New macro "WRITE_LIFE_KERN_MIN" can be used as base by kernel mode components.
Changes since v1:
- introduce four more hints for in-kernel use, as recommended by Dave chinner
& Jens axboe. This isolates kernel-mode hints from user-mode ones.
- remove mount-option to specify write-hint, as recommended by Jan kara &
Dave chinner. Rather, FS always sets write-hint for journal. This gets ignored
if device does not support stream.
- Removed code-redundancy for write_dirty_buffer (Jan kara's review comment)
V3 patch:
https://marc.info/?l=linux-block&m=155384631909082&w=2
V2 patch:
https://patchwork.kernel.org/cover/10754405/
V1 patch:
https://marc.info/?l=linux-fsdevel&m=154444637519020&w=2
Kanchan Joshi (7):
fs: introduce write-hint start point for in-kernel hints
block: increase stream count for in-kernel use
block: introduce API to register stream information with block-layer
block: introduce write-hint to stream-id conversion
nvme: register stream info with block layer
fs: introduce APIs to enable passing write-hint with buffer-head
fs/ext4,jbd2: add support for sending write-hint with journal
block/blk-core.c | 20 ++++++++++++++++++++
block/blk-settings.c | 12 ++++++++++++
drivers/nvme/host/core.c | 23 ++++++-----------------
fs/buffer.c | 18 ++++++++++++++++--
fs/ext4/ext4_jbd2.h | 1 +
fs/ext4/super.c | 2 ++
fs/jbd2/commit.c | 11 +++++++----
fs/jbd2/journal.c | 3 ++-
fs/jbd2/revoke.c | 3 ++-
include/linux/blkdev.h | 7 ++++++-
include/linux/buffer_head.h | 3 +++
include/linux/fs.h | 2 ++
include/linux/jbd2.h | 8 ++++++++
13 files changed, 87 insertions(+), 26 deletions(-)
--
2.7.4
next parent reply other threads:[~2019-04-17 17:54 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190417175347epcas2p41e4240ab83b46c9f07d237fc9494903a@epcas2p4.samsung.com>
2019-04-17 17:49 ` Kanchan Joshi [this message]
[not found] ` <CGME20190417175351epcas1p481ec1bd87188022020a504447e88fde4@epcas1p4.samsung.com>
2019-04-17 17:50 ` [PATCH v4 1/7] fs: introduce write-hint start point for in-kernel hints Kanchan Joshi
[not found] ` <CGME20190417175353epcas2p1eaec3fea0bf26bb97416149e11b1317e@epcas2p1.samsung.com>
2019-04-17 17:50 ` [PATCH v4 2/7] block: increase stream count for in-kernel use Kanchan Joshi
[not found] ` <CGME20190417175355epcas2p182a8626924a911310f7584d564d0a1ec@epcas2p1.samsung.com>
2019-04-17 17:50 ` [PATCH v4 3/7] block: introduce API to register stream information with block-layer Kanchan Joshi
[not found] ` <CGME20190417175358epcas1p41a0a4e349dfe0a70bdcc244161c71604@epcas1p4.samsung.com>
2019-04-17 17:50 ` [PATCH v4 4/7] block: introduce write-hint to stream-id conversion Kanchan Joshi
2019-04-17 17:57 ` Jens Axboe
2019-04-22 13:36 ` kanchan
2019-04-18 14:06 ` Jan Kara
2019-04-18 18:58 ` Andreas Dilger
2019-04-22 13:33 ` kanchan
[not found] ` <CGME20190417175400epcas2p2b166bfaef69f5a02e856743be76199f3@epcas2p2.samsung.com>
2019-04-17 17:50 ` [PATCH v4 5/7] nvme: register stream info with block layer Kanchan Joshi
2019-04-18 13:52 ` Jan Kara
2019-04-22 13:43 ` kanchan
[not found] ` <CGME20190417175402epcas1p450f2617234aadf24cb4c8ae184d48c68@epcas1p4.samsung.com>
2019-04-17 17:50 ` [PATCH v4 6/7] fs: introduce APIs to enable passing write-hint with buffer-head Kanchan Joshi
[not found] ` <CGME20190417175404epcas2p1380bc5b15bd1e3c09866765c581a34c3@epcas2p1.samsung.com>
2019-04-17 17:50 ` [PATCH v4 7/7] fs/ext4,jbd2: add support for sending write-hint with journal Kanchan Joshi
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