From: Jeffle Xu <jefflexu@linux.alibaba.com>
To: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org,
chao@kernel.org, linux-erofs@lists.ozlabs.org
Cc: torvalds@linux-foundation.org, gregkh@linuxfoundation.org,
willy@infradead.org, linux-fsdevel@vger.kernel.org,
joseph.qi@linux.alibaba.com, bo.liu@linux.alibaba.com,
tao.peng@linux.alibaba.com, gerry@linux.alibaba.com,
eguan@linux.alibaba.com, linux-kernel@vger.kernel.org
Subject: [PATCH v3 18/22] erofs: implement fscache-based data read for data blobs
Date: Wed, 9 Feb 2022 14:01:04 +0800 [thread overview]
Message-ID: <20220209060108.43051-19-jefflexu@linux.alibaba.com> (raw)
In-Reply-To: <20220209060108.43051-1-jefflexu@linux.alibaba.com>
This patch implements the data plane of reading data from data blob file
over fscache.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
---
fs/erofs/data.c | 3 +++
fs/erofs/fscache.c | 16 +++++++++++++---
fs/erofs/internal.h | 1 +
3 files changed, 17 insertions(+), 3 deletions(-)
diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index 1bff99576883..c5ccf55c050c 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -200,6 +200,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
map->m_bdev = sb->s_bdev;
map->m_daxdev = EROFS_SB(sb)->dax_dev;
map->m_dax_part_off = EROFS_SB(sb)->dax_part_off;
+ map->m_ctx = EROFS_SB(sb)->bootstrap;
if (map->m_deviceid) {
down_read(&devs->rwsem);
@@ -211,6 +212,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
map->m_bdev = dif->bdev;
map->m_daxdev = dif->dax_dev;
map->m_dax_part_off = dif->dax_part_off;
+ map->m_ctx = dif->ctx;
up_read(&devs->rwsem);
} else if (devs->extra_devices) {
down_read(&devs->rwsem);
@@ -228,6 +230,7 @@ int erofs_map_dev(struct super_block *sb, struct erofs_map_dev *map)
map->m_bdev = dif->bdev;
map->m_daxdev = dif->dax_dev;
map->m_dax_part_off = dif->dax_part_off;
+ map->m_ctx = dif->ctx;
break;
}
}
diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
index fcd686f4dc9f..c7762e154064 100644
--- a/fs/erofs/fscache.c
+++ b/fs/erofs/fscache.c
@@ -68,11 +68,21 @@ static inline int erofs_fscache_get_map(struct erofs_fscache_map *fsmap,
struct erofs_map_blocks *map,
struct super_block *sb)
{
- struct erofs_sb_info *sbi = EROFS_SB(sb);
+ struct erofs_map_dev mdev;
+ int ret;
+
+ mdev = (struct erofs_map_dev) {
+ .m_deviceid = map->m_deviceid,
+ .m_pa = map->m_pa,
+ };
+
+ ret = erofs_map_dev(sb, &mdev);
+ if (ret)
+ return ret;
- fsmap->m_ctx = sbi->bootstrap;
+ fsmap->m_ctx = mdev.m_ctx;
+ fsmap->m_pa = mdev.m_pa;
fsmap->m_la = map->m_la;
- fsmap->m_pa = map->m_pa;
fsmap->m_llen = map->m_llen;
return 0;
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 5d514c7b73cc..6ccf14952b2d 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -486,6 +486,7 @@ struct erofs_map_dev {
struct block_device *m_bdev;
struct dax_device *m_daxdev;
u64 m_dax_part_off;
+ struct erofs_fscache_context *m_ctx;
erofs_off_t m_pa;
unsigned int m_deviceid;
--
2.27.0
next prev parent reply other threads:[~2022-02-09 6:12 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-09 6:00 [PATCH v3 00/22] fscache,erofs: fscache-based demand-read semantics Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 01/22] fscache: export fscache_end_operation() Jeffle Xu
2022-02-17 7:44 ` Liu Bo
2022-02-09 6:00 ` [PATCH v3 02/22] fscache: add a method to support on-demand read semantics Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 03/22] cachefiles: extract generic function for daemon methods Jeffle Xu
2022-02-17 8:17 ` Liu Bo
2022-02-09 6:00 ` [PATCH v3 04/22] cachefiles: detect backing file size in on-demand read mode Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 05/22] cachefiles: introduce new devnode for " Jeffle Xu
2022-02-15 9:03 ` JeffleXu
2022-02-15 10:37 ` Greg KH
2022-02-16 8:17 ` JeffleXu
2022-02-15 11:13 ` [PATCH v4 05/23] " Jeffle Xu
2022-02-16 10:48 ` Greg KH
2022-02-16 12:49 ` JeffleXu
2022-02-16 17:48 ` Greg KH
2022-02-17 1:49 ` JeffleXu
2022-02-09 6:00 ` [PATCH v3 06/22] erofs: use meta buffers for erofs_read_superblock() Jeffle Xu
2022-02-09 7:52 ` Gao Xiang
2022-02-09 6:00 ` [PATCH v3 07/22] erofs: export erofs_map_blocks() Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 08/22] erofs: add mode checking helper Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 09/22] erofs: register global fscache volume Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 10/22] erofs: add cookie context helper functions Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 11/22] erofs: add anonymous inode managing page cache of blob file Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 12/22] erofs: add erofs_fscache_read_page() helper Jeffle Xu
2022-02-09 6:00 ` [PATCH v3 13/22] erofs: register cookie context for bootstrap blob Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 14/22] erofs: implement fscache-based metadata read Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 15/22] erofs: implement fscache-based data read for non-inline layout Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 16/22] erofs: implement fscache-based data read for inline layout Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 17/22] erofs: register cookie context for data blobs Jeffle Xu
2022-02-09 6:01 ` Jeffle Xu [this message]
2022-02-09 6:01 ` [PATCH v3 19/22] erofs: implement fscache-based data readahead for hole Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 20/22] erofs: implement fscache-based data readahead for non-inline layout Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 21/22] erofs: implement fscache-based data readahead for inline layout Jeffle Xu
2022-02-09 6:01 ` [PATCH v3 22/22] erofs: add 'uuid' mount option Jeffle Xu
2022-02-10 5:58 ` [Linux-cachefs] [PATCH v3 00/22] fscache, erofs: fscache-based demand-read semantics Gao Xiang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220209060108.43051-19-jefflexu@linux.alibaba.com \
--to=jefflexu@linux.alibaba.com \
--cc=bo.liu@linux.alibaba.com \
--cc=chao@kernel.org \
--cc=dhowells@redhat.com \
--cc=eguan@linux.alibaba.com \
--cc=gerry@linux.alibaba.com \
--cc=gregkh@linuxfoundation.org \
--cc=joseph.qi@linux.alibaba.com \
--cc=linux-cachefs@redhat.com \
--cc=linux-erofs@lists.ozlabs.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=tao.peng@linux.alibaba.com \
--cc=torvalds@linux-foundation.org \
--cc=willy@infradead.org \
--cc=xiang@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®