MIPS: export __cmpxchg_small()

BugLink: https://bugs.launchpad.net/bugs/2099996

commit 90a88784cdb7757feb8dd520255e6cb861f30943 upstream.

Export the symbol __cmpxchg_small() for btrfs.ko that uses it to store
blk_status_t, which is u8. Reported by LKP:

>> ERROR: modpost: "__cmpxchg_small" [fs/btrfs/btrfs.ko] undefined!

Patch using the cmpxchg() https://lore.kernel.org/linux-btrfs/1d4f72f7fee285b2ddf4bf62b0ac0fd89def5417.1728575379.git.naohiro.aota@wdc.com/

Link: https://lore.kernel.org/all/20241016134919.GO1609@suse.cz/
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

David Sterba

2025-02-25 22:59:22 +09:00

committed by

Stefan Bader

parent 8276125709

commit d6da285657

1 changed files with 1 additions and 0 deletions

									
										arch/mips/kernel/cmpxchg.c
									
		+1
		
												View File
												
				@@ -102,3 +102,4 @@ unsigned long __cmpxchg_small(volatile void *ptr, unsigned long old,

							return old;

					}

				}

				EXPORT_SYMBOL(__cmpxchg_small);