Commit 4cd81c3d authored by Benjamin LaHaise's avatar Benjamin LaHaise

aio: double aio_max_nr in calculations

With the changes to use percpu counters for aio event ring size calculation,
existing increases to aio_max_nr are now insufficient to allow for the
allocation of enough events.  Double the value used for aio_max_nr to account
for the doubling introduced by the percpu slack.
Signed-off-by: default avatarBenjamin LaHaise <bcrl@kvack.org>
parent d29c445b
......@@ -490,7 +490,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events)
return ERR_PTR(-EINVAL);
}
if (!nr_events || (unsigned long)nr_events > aio_max_nr)
if (!nr_events || (unsigned long)nr_events > (aio_max_nr * 2UL))
return ERR_PTR(-EAGAIN);
ctx = kmem_cache_zalloc(kioctx_cachep, GFP_KERNEL);
......@@ -522,7 +522,7 @@ static struct kioctx *ioctx_alloc(unsigned nr_events)
/* limit the number of system wide aios */
spin_lock(&aio_nr_lock);
if (aio_nr + nr_events > aio_max_nr ||
if (aio_nr + nr_events > (aio_max_nr * 2UL) ||
aio_nr + nr_events < aio_nr) {
spin_unlock(&aio_nr_lock);
goto out_cleanup;
......
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