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Filename Latest commit message Latest commit date
Ilya Dryomov f54a096195 rbd: don't assume rbd_is_lock_owner() for exclusive mappings
commit 3ceccb14f5576e02b81cc8b105ab81f224bd87f6 upstream.

Expanding on the previous commit, assuming that rbd_is_lock_owner()
always returns true (i.e. that we are either in RBD_LOCK_STATE_LOCKED
or RBD_LOCK_STATE_QUIESCING) if the mapping is exclusive is wrong too.
In case ceph_cls_set_cookie() fails, the lock would be temporarily
released even if the mapping is exclusive, meaning that we can end up
even in RBD_LOCK_STATE_UNLOCKED.

IOW, exclusive mappings are really "just" about disabling automatic
lock transitions (as documented in the man page), not about grabbing
the lock and holding on to it whatever it takes.

Cc: stable@vger.kernel.org
Fixes: 637cd06053 ("rbd: new exclusive lock wait/wake code")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-08-19 05:33:39 +02:00
arch perf/x86/intel/pt: Fix a topa_entry base address calculation 2024-08-19 05:33:39 +02:00
block
certs
crypto
Documentation
drivers rbd: don't assume rbd_is_lock_owner() for exclusive mappings 2024-08-19 05:33:39 +02:00
fs f2fs: fix to don't dirty inode for readonly filesystem 2024-08-19 05:33:37 +02:00
include m68k: amiga: Turn off Warp1260 interrupts during boot 2024-08-19 05:33:36 +02:00
init
ipc
kernel watchdog/perf: properly initialize the turbo mode timestamp and rearm counter 2024-08-19 05:33:39 +02:00
lib kobject_uevent: Fix OOB access within zap_modalias_env() 2024-08-19 05:33:38 +02:00
LICENSES
mm Revert "mm/writeback: fix possible divide-by-zero in wb_dirty_limits(), again" 2024-07-18 11:40:51 +02:00
net ipv6: take care of scope when choosing the src addr 2024-08-19 05:33:35 +02:00
samples
scripts kconfig: remove wrong expr_trans_bool() 2024-07-27 10:38:29 +02:00
security
sound ASoC: max98088: Check for clk_prepare_enable() error 2024-08-19 05:33:33 +02:00
tools selftests/sigaltstack: Fix ppc64 GCC build 2024-08-19 05:33:39 +02:00
usr
virt
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.cocciconfig
.get_maintainer.ignore
.gitattributes
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COPYING
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Kbuild
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Makefile Linux 5.4.281 2024-07-27 10:38:33 +02:00
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.