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Christoph Hellwig d31b82b7f0 block, loop: support partitions without scanning 
commit b9684a71fc upstream.

Historically we did distinguish between a flag that surpressed partition
scanning, and a combinations of the minors variable and another flag if
any partitions were supported.  This was generally confusing and doesn't
make much sense, but some corner case uses of the loop driver actually
do want to support manually added partitions on a device that does not
actively scan for partitions.  To make things worsee the loop driver
also wants to dynamically toggle the scanning for partitions on a live
gendisk, which makes the disk->flags updates non-atomic.

Introduce a new GD_SUPPRESS_PART_SCAN bit in disk->state that disables
just scanning for partitions, and toggle that instead of GENHD_FL_NO_PART
in the loop driver.

Fixes: 1ebe2e5f9d ("block: remove GENHD_FL_EXT_DEVT")
Reported-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220527055806.1972352-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2022-06-14 18:41:52 +02:00
Documentation ata: libata-transport: fix {dma|pio|xfer}_mode sysfs files 2022-06-14 18:41:46 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
arch powerpc/32: Fix overread/overwrite of thread_struct via ptrace 2022-06-14 18:41:51 +02:00
block block, loop: support partitions without scanning 2022-06-14 18:41:52 +02:00
certs certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
crypto crypto: cryptd - Protect per-CPU resource by disabling BH. 2022-06-09 10:26:07 +02:00
drivers block, loop: support partitions without scanning 2022-06-14 18:41:52 +02:00
fs writeback: Fix inode->i_io_list not be protected by inode->i_lock error 2022-06-14 18:41:47 +02:00
include block, loop: support partitions without scanning 2022-06-14 18:41:52 +02:00
init Kconfig: Add option for asm goto w/ tied outputs to workaround clang-13 bug 2022-06-09 10:26:25 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:26:06 +02:00
kernel tracing: Avoid adding tracer option before update_tracer_options 2022-06-14 18:41:27 +02:00
lib mm/huge_memory: Fix xarray node memory leak 2022-06-14 18:41:49 +02:00
mm mm/huge_memory: Fix xarray node memory leak 2022-06-14 18:41:49 +02:00
net net/sched: act_police: more accurate MTU policing 2022-06-14 18:41:52 +02:00
samples samples/landlock: Format with clang-format 2022-06-09 10:26:22 +02:00
scripts scripts/gdb: change kernel config dumping method 2022-06-14 18:41:42 +02:00
security KEYS: trusted: tpm2: Fix migratable logic 2022-06-14 18:41:45 +02:00
sound ALSA: hda/realtek: Add quirk for HP Dev One 2022-06-14 18:41:44 +02:00
tools net/sched: act_police: more accurate MTU policing 2022-06-14 18:41:52 +02:00
usr kbuild: remove include/linux/cyclades.h from header file check 2022-01-27 08:51:08 +01:00
virt KVM: Free new dirty bitmap if creating a new memslot fails 2022-05-25 09:59:03 +02:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
…
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap MAINTAINERS: Update Jisheng's email address 2022-03-08 17:30:32 +01:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS net: dsa: realtek-smi: move to subdirectory 2022-04-08 13:58:12 +02:00
Makefile Linux 5.17.14 2022-06-09 10:26:33 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.