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| author | Benjamin LaHaise <bcrl@kvack.org> | 2013-07-30 20:06:37 +0400 |
|---|---|---|
| committer | Benjamin LaHaise <bcrl@kvack.org> | 2013-07-30 20:06:37 +0400 |
| commit | 4cd81c3dfc4a34e4a0b6fa577860077c8e5b13af (patch) | |
| tree | aba6e085ad0193bde59f599b0ad7b3ddb484b744 /fs/aio.c | |
| parent | d29c445b635b3a03cf683cafcbae58a4ec1e1125 (diff) | |
| download | linux-4cd81c3dfc4a34e4a0b6fa577860077c8e5b13af.tar.xz | |
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: Benjamin LaHaise <bcrl@kvack.org>
Diffstat (limited to 'fs/aio.c')
| -rw-r--r-- | fs/aio.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -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; |