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From: David Xu <davidxu@FreeBSD.org>
Date: Tue, 8 Nov 2005 23:48:32 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/kern vfs_aio.c
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davidxu     2005-11-08 23:48:32 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             vfs_aio.c 
  Log:
  In aio_waitcomplete, do not return EAGAIN if no other threads
  have started aio, instead, initialize aio management structure
  if it hasn't been done, the reason to adjust this behavior is
  to make it a bit friendly for threaded program, consider two
  threads, one submits aio_write, and another just calls
  aio_waitcomplete to wait any I/O to be completed and recycle the
  aio requests, before submitter doing any I/O, the recycler wants
  to wait in kernel. This also fixes inconsistency with other aio
  syscalls.
  
  Revision  Changes    Path
  1.204     +1 -1      src/sys/kern/vfs_aio.c