From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org
Subject: add file system helpers that take kernel pointers for the init code v4
Date: Tue, 28 Jul 2020 18:33:53 +0200 [thread overview]
Message-ID: <20200728163416.556521-1-hch@lst.de> (raw)
Hi Al and Linus,
currently a lot of the file system calls in the early in code (and the
devtmpfs kthread) rely on the implicit set_fs(KERNEL_DS) during boot.
This is one of the few last remaining places we need to deal with to kill
off set_fs entirely, so this series adds new helpers that take kernel
pointers. These helpers are in init/ and marked __init and thus will
be discarded after bootup. A few also need to be duplicated in devtmpfs,
though unfortunately.
The series sits on top of my previous
"decruft the early init / initrd / initramfs code v2"
series.
Git tree:
git://git.infradead.org/users/hch/misc.git init_path
Gitweb:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/init_path
Changes since v3:
- rename fs/for_init.c to fs/init.c
- document the purpose of the routines in fs/init.c with a comment
- don't mark devtmpfs __init as that will cause it to get overwritten
by initmem poisoning
- add an init_dup helper to make Al more happy than with the version
commit to the "decruft the early init / initrd / initramfs code v2"
series
Changes since v2:
- move to fs/for_init.c
- reuse the init routines in devtmpfs after refactoring devtmpfsd
(and thus the broken error handling in the previous version)
- actually use kern_path in a place where user_path_at sneaked back in
Changes since v1:
- avoid most core VFS changes
- renamed the functions and move them to init/ and devtmpfs
- drop a bunch of cleanups that can be submitted independently now
Diffstat:
next reply other threads:[~2020-07-28 16:33 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-28 16:33 Christoph Hellwig [this message]
2020-07-28 16:33 ` [PATCH 01/23] fs: refactor do_mount Christoph Hellwig
2020-07-28 16:33 ` [PATCH 02/23] fs: refactor ksys_umount Christoph Hellwig
[not found] ` <20200728163416.556521-3-hch-jcswGhMUV9g@public.gmane.org>
2020-08-06 14:44 ` Naresh Kamboju
2020-08-17 13:44 ` Naresh Kamboju
2020-07-28 16:33 ` [PATCH 03/23] fs: push the getname from do_rmdir into the callers Christoph Hellwig
2020-07-28 16:33 ` [PATCH 05/23] init: initialize ramdisk_execute_command at compile time Christoph Hellwig
2020-07-28 16:34 ` [PATCH 08/23] init: add an init_mount helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 09/23] init: add an init_umount helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 10/23] init: add an init_unlink helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 11/23] init: add an init_rmdir helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 12/23] init: add an init_chdir helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 13/23] init: add an init_chroot helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 14/23] init: add an init_chown helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 15/23] init: add an init_chmod helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 16/23] init: add an init_eaccess helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 17/23] init: add an init_link helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 18/23] init: add an init_symlink helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 19/23] init: add an init_mkdir helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 20/23] init: add an init_mknod helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 21/23] init: add an init_stat helper Christoph Hellwig
2020-09-04 13:53 ` [PATCH] init: fix error check in clean_path() Barret Rhoden
2020-09-04 16:04 ` Christoph Hellwig
[not found] ` <20200728163416.556521-1-hch-jcswGhMUV9g@public.gmane.org>
2020-07-28 16:33 ` [PATCH 04/23] devtmpfs: refactor devtmpfsd() Christoph Hellwig
2020-07-28 16:59 ` Greg Kroah-Hartman
2020-07-28 16:33 ` [PATCH 06/23] init: mark console_on_rootfs as __init Christoph Hellwig
2020-07-28 16:34 ` [PATCH 07/23] init: mark create_dev " Christoph Hellwig
2020-07-28 16:34 ` [PATCH 22/23] init: add an init_utimes helper Christoph Hellwig
2020-07-28 16:34 ` [PATCH 23/23] init: add an init_dup helper Christoph Hellwig
2020-07-29 19:51 ` add file system helpers that take kernel pointers for the init code v4 Al Viro
2020-07-30 6:25 ` Christoph Hellwig
2020-07-31 2:14 ` Al Viro
[not found] ` <20200731021424.GG1236603-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
2020-07-31 6:33 ` Christoph Hellwig
2020-08-03 14:56 ` Qian Cai
[not found] ` <20200803145622.GB4631-J5quhbR+WMc@public.gmane.org>
2020-08-03 15:08 ` Christoph Hellwig
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