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: 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 v2 09/20] erofs: add mode checking helper
Date: Tue, 18 Jan 2022 21:12:05 +0800 [thread overview]
Message-ID: <20220118131216.85338-10-jefflexu@linux.alibaba.com> (raw)
In-Reply-To: <20220118131216.85338-1-jefflexu@linux.alibaba.com>
Until then erofs is exactly blockdev based filesystem. In other using
scenarios (e.g. container image), erofs needs to run upon files.
This patch set is going to introduces a new nodev mode, in which erofs
could be mounted from a bootstrap blob file containing complete erofs
image.
Add a helper checking which mode erofs works in.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
---
fs/erofs/internal.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index f9f94d63d40f..2b9337d385ce 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -161,6 +161,11 @@ struct erofs_sb_info {
#define set_opt(opt, option) ((opt)->mount_opt |= EROFS_MOUNT_##option)
#define test_opt(opt, option) ((opt)->mount_opt & EROFS_MOUNT_##option)
+static inline bool erofs_bdev_mode(struct super_block *sb)
+{
+ return sb->s_bdev;
+}
+
enum {
EROFS_ZIP_CACHE_DISABLED,
EROFS_ZIP_CACHE_READAHEAD,
--
2.27.0
next prev parent reply other threads:[~2022-01-18 13:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-18 13:11 [PATCH v2 00/20] fscache,erofs: fscache-based demand-read semantics Jeffle Xu
2022-01-18 13:11 ` [PATCH v2 01/20] netfs: make @file optional in netfs_alloc_read_request() Jeffle Xu
2022-01-18 13:11 ` [PATCH v2 02/20] netfs,cachefiles: manage logical/physical offset separately Jeffle Xu
2022-01-18 13:11 ` [PATCH v2 03/20] netfs,fscache: support on-demand reading Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 04/20] cachefiles: extract generic daemon write function Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 05/20] cachefiles: detect backing file size in on-demand read mode Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 06/20] cachefiles: introduce new devnode for " Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 07/20] erofs: use meta buffers for erofs_read_superblock() Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 08/20] erofs: export erofs_map_blocks() Jeffle Xu
2022-01-18 13:12 ` Jeffle Xu [this message]
2022-01-18 13:12 ` [PATCH v2 10/20] erofs: register global fscache volume Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 11/20] erofs: add cookie context helper functions Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 12/20] erofs: add anonymous inode managing page cache of blob file Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 13/20] erofs: register cookie context for bootstrap blob Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 14/20] erofs: implement fscache-based metadata read Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 15/20] erofs: implement fscache-based data read for non-inline layout Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 16/20] erofs: implement fscache-based data read for inline layout Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 17/20] erofs: register cookie context for data blobs Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 18/20] erofs: implement fscache-based data read " Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 19/20] erofs: add 'uuid' mount option Jeffle Xu
2022-01-18 13:12 ` [PATCH v2 20/20] erofs: support on-demand reading Jeffle Xu
2022-01-19 6:40 ` [Linux-cachefs] [PATCH v2 00/20] fscache, erofs: fscache-based demand-read semantics Gao Xiang
2022-01-21 10:57 ` JeffleXu
2022-01-24 17:23 ` [PATCH v2 00/20] fscache,erofs: " David Howells
2022-01-25 1:53 ` JeffleXu
2022-01-25 2:55 ` JeffleXu
2022-01-25 15:34 ` [PATCH v2 11/20] erofs: add cookie context helper functions David Howells
2022-01-26 6:45 ` JeffleXu
2022-01-25 16:15 ` [PATCH v2 00/20] fscache,erofs: fscache-based demand-read semantics David Howells
2022-01-26 6:10 ` JeffleXu
2022-01-26 8:51 ` David Howells
2022-01-27 7:07 ` JeffleXu
2022-01-25 20:27 ` David Howells
2022-01-26 5:26 ` JeffleXu
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