linux-kernel - [PATCH v4 0/4] Convert vmcore to use an iov

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Date:   Fri, 18 Mar 2022 17:37:02 +0800
From:   Baoquan He <bhe@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     willy@...radead.org, bhe@...hat.com, kexec@...ts.infradead.org,
        yangtiezhu@...ngson.cn, amit.kachhap@....com, hch@....de,
        linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk
Subject: [PATCH v4 0/4] Convert vmcore to use an iov_iter

Copy the description of v3 cover letter from Willy:
===
For some reason several people have been sending bad patches to fix
compiler warnings in vmcore recently.  Here's how it should be done.
Compile-tested only on x86.  As noted in the first patch, s390 should
take this conversion a bit further, but I'm not inclined to do that
work myself.

This series resends Willy's v3 patches which includes patch 1~3, and
append one patch to clean up the open code pointed out by Al.

Al's concerns to v3 patches and my reply after investigation:
https://lore.kernel.org/all/YhiTN0MORoQmFFkO@MiWiFi-R3L-srv/T/#u

Willy's v3 patchset:
[PATCH v3 0/3] Convert vmcore to use an iov_iter
https://lore.kernel.org/all/20211213143927.3069508-1-willy@infradead.org/T/#u

Changelog:
===
v4:
 - Append one patch to replace the open code with iov_iter_count().
   This is suggested by Al.
 - Fix a indentation error by replacing space with tab in
   arch/sh/kernel/crash_dump.c of patch 1 reported by checkpatch. The
   rest of patch 1~3 are untouched.
 - Add Christopy's Reviewed-by and my Acked-by for patch 1~3.
v3:
 - Send the correct patches this time
v2:
 - Removed unnecessary kernel-doc
 - Included uio.h to fix compilation problems
 - Made read_from_oldmem_iter static to avoid compile warnings during the
   conversion
 - Use iov_iter_truncate() (Christoph)



Baoquan He (1):
  fs/proc/vmcore: Use iov_iter_count()

Matthew Wilcox (Oracle) (3):
  vmcore: Convert copy_oldmem_page() to take an iov_iter
  vmcore: Convert __read_vmcore to use an iov_iter
  vmcore: Convert read_from_oldmem() to take an iov_iter

 arch/arm/kernel/crash_dump.c     |  27 +------
 arch/arm64/kernel/crash_dump.c   |  29 +------
 arch/ia64/kernel/crash_dump.c    |  32 +-------
 arch/mips/kernel/crash_dump.c    |  27 +------
 arch/powerpc/kernel/crash_dump.c |  35 ++-------
 arch/riscv/kernel/crash_dump.c   |  26 +------
 arch/s390/kernel/crash_dump.c    |  13 ++--
 arch/sh/kernel/crash_dump.c      |  29 ++-----
 arch/x86/kernel/crash_dump_32.c  |  29 +------
 arch/x86/kernel/crash_dump_64.c  |  48 ++++--------
 fs/proc/vmcore.c                 | 130 +++++++++++++------------------
 include/linux/crash_dump.h       |  19 ++---
 12 files changed, 123 insertions(+), 321 deletions(-)

-- 
2.34.1