| commit | 1900a7a32a9988af9bb6ad21d66ddcb4a1bc3af4 | |
| author | David S. Miller <davem@davemloft.net> | |
| Wed, 18 Aug 2010 00:09:53 +0000 (17 17:09 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Thu, 26 Aug 2010 23:43:41 +0000 (26 16:43 -0700) | ||
| tree | 848c5e408266bd980f4368abc558c3f16b6263f1 | treesnapshot (tar.gz zip) |
| parent | d5241124077ee087eb809a94a950950daa82eebc | commitdiff |
sparc64: Fix rwsem constant bug leading to hangs.
[ Upstream commit ef201bebe5afc91a2b99b45dacc8c6dd88ca9e58 ]
As noticed by Linus, it is critical that some of the
rwsem constants be signed. Yet, hex constants are
unsigned unless explicitly casted or negated.
The most critical one is RWSEM_WAITING_BIAS.
This bug was exacerbated by commit
424acaaeb3a3932d64a9b4bd59df6cf72c22d8f3 ("rwsem: wake queued readers
when writer blocks on active read lock")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[ Upstream commit ef201bebe5afc91a2b99b45dacc8c6dd88ca9e58 ]
As noticed by Linus, it is critical that some of the
rwsem constants be signed. Yet, hex constants are
unsigned unless explicitly casted or negated.
The most critical one is RWSEM_WAITING_BIAS.
This bug was exacerbated by commit
424acaaeb3a3932d64a9b4bd59df6cf72c22d8f3 ("rwsem: wake queued readers
when writer blocks on active read lock")
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| arch/sparc/include/asm/rwsem-const.h | diffblobblamehistory |