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Ensure that we honor aio_read/write() returning EAGAIN
author
Jens Axboe
<jaxboe@fusionio.com>
Thu, 7 Jul 2011 19:06:40 +0000
(21:06 +0200)
committer
Jens Axboe
<jaxboe@fusionio.com>
Thu, 7 Jul 2011 19:06:40 +0000
(21:06 +0200)
This fixes a problem on OSX, where the number of resources for
aio is woefully small.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
engines/posixaio.c
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diff --git
a/engines/posixaio.c
b/engines/posixaio.c
index 061812e67ebc787efcc7315ef066105ad0ee3ed0..867b5f72862310197fc7e3e82bccf71cc14550bc 100644
(file)
--- a/
engines/posixaio.c
+++ b/
engines/posixaio.c
@@
-184,6
+184,13
@@
static int fio_posixaio_queue(struct thread_data *td,
}
if (ret) {
+ /*
+ * At least OSX has a very low limit on the number of pending
+ * IOs, so if it will return EAGAIN.
+ */
+ if (errno == EAGAIN)
+ return FIO_Q_BUSY;
+
io_u->error = errno;
td_verror(td, io_u->error, "xfer");
return FIO_Q_COMPLETED;