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(parent: c30b20c) | patch
pstore: Convert "psinfo" locking to mutex
authorKees Cook <keescook@chromium.org>
Tue, 5 May 2020 02:31:36 +0000 (19:31 -0700)
committerKees Cook <keescook@chromium.org>
Tue, 12 May 2020 16:13:47 +0000 (09:13 -0700)
commitcab12fd049380b1d0c3ac9f534407a8cc0ac4bba
treefbeece16030bf753ffc420a5e496ca0ce0ea2c6atree | snapshot
parentc30b20cd96a7a08e77c12cb3326c6fd801f7fe87commit | diff
pstore: Convert "psinfo" locking to mutex

Currently pstore can only have a single backend attached at a time, and it
tracks the active backend via "psinfo", under a lock. The locking for this
does not need to be a spinlock, and in order to avoid may_sleep() issues
during future changes to pstore_unregister(), switch to a mutex instead.

Link: https://lore.kernel.org/lkml/20200506152114.50375-4-keescook@chromium.org/
Signed-off-by: Kees Cook <keescook@chromium.org>
fs/pstore/platform.c diff | blob | history
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