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Date: Fri, 18 Mar 2022 13:26:50 +0800 From: JeffleXu <jefflexu@...ux.alibaba.com> To: dhowells@...hat.com, linux-cachefs@...hat.com, xiang@...nel.org, chao@...nel.org, linux-erofs@...ts.ozlabs.org, gregkh@...uxfoundation.org, tao.peng@...ux.alibaba.com, willy@...radead.org, linux-kernel@...r.kernel.org, joseph.qi@...ux.alibaba.com, bo.liu@...ux.alibaba.com, linux-fsdevel@...r.kernel.org, luodaowen.backend@...edance.com, eguan@...ux.alibaba.com, gerry@...ux.alibaba.com, torvalds@...ux-foundation.org Subject: Re: [Linux-cachefs] [PATCH v5 10/22] erofs: add mode checking helper On 3/17/22 1:36 PM, Gao Xiang wrote: > On Wed, Mar 16, 2022 at 09:17:11PM +0800, Jeffle Xu wrote: >> 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@...ux.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 e424293f47a2..f66af9ebda43 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) > > How about renaming it as erofs_is_nodev_mode()? Sure, will be renamed in the next version. -- Thanks, Jeffle
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