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author | Zach Brown <zach.brown@oracle.com> | 2006-12-10 02:21:01 -0800 |
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committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-10 09:57:21 -0800 |
commit | 20258b2b397031649e4a41922fe803d57017df84 (patch) | |
tree | 9c5fc96367b4938474cee2789d3c98c5e37586bf /drivers | |
parent | 0273201e693fd62381f6b1e85b15ffc117d8a46e (diff) | |
download | blackbird-op-linux-20258b2b397031649e4a41922fe803d57017df84.tar.gz blackbird-op-linux-20258b2b397031649e4a41922fe803d57017df84.zip |
[PATCH] dio: remove duplicate bio wait code
Now that we have a single refcount and waiting path we can reuse it in the
async 'should_wait' path. It continues to rely on the fragile link between
the conditional in dio_complete_aio() which decides to complete the AIO and
the conditional in direct_io_worker() which decides to wait and free.
By waiting before dropping the reference we stop dio_bio_end_aio() from
calling dio_complete_aio() which used to wake up the waiter after seeing the
reference count drop to 0. We hoist this wake up into dio_bio_end_aio() which
now notices when it's left a single remaining reference that is held by the
waiter.
Signed-off-by: Zach Brown <zach.brown@oracle.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions