diff options
author | Michel Lespinasse <walken@google.com> | 2010-08-09 17:21:15 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:10 -0700 |
commit | 345af7bf3304410634c21ada4664fda83d4d9a16 (patch) | |
tree | 1fd8b49ef79796e561cce19794af371099f5e7ca /crypto/pcbc.c | |
parent | 7721fea3d0fd93fb4d000eb737b444369358d6d3 (diff) |
rwsem: fully separate code paths to wake writers vs readers
This is in preparation for later changes in the series.
In __rwsem_do_wake(), the first queued waiter is checked first in order to
determine whether it's a writer or a reader. The code paths diverge at
this point. The code that checks and increments the rwsem active count is
duplicated on both sides - the point is that later changes in the series
will be able to independently modify both sides.
Signed-off-by: Michel Lespinasse <walken@google.com>
Acked-by: David Howells <dhowells@redhat.com>
Cc: Mike Waychison <mikew@google.com>
Cc: Suleiman Souhlal <suleiman@google.com>
Cc: Ying Han <yinghan@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'crypto/pcbc.c')
0 files changed, 0 insertions, 0 deletions