diff options
Diffstat (limited to 'module/os/linux/spl/spl-kmem-cache.c')
| -rw-r--r-- | module/os/linux/spl/spl-kmem-cache.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/module/os/linux/spl/spl-kmem-cache.c b/module/os/linux/spl/spl-kmem-cache.c index 745d03012..3c30dfc57 100644 --- a/module/os/linux/spl/spl-kmem-cache.c +++ b/module/os/linux/spl/spl-kmem-cache.c @@ -1015,10 +1015,20 @@ spl_cache_grow(spl_kmem_cache_t *skc, int flags, void **obj) ASSERT0(flags & ~KM_PUBLIC_MASK); ASSERT(skc->skc_magic == SKC_MAGIC); ASSERT((skc->skc_flags & KMC_SLAB) == 0); - might_sleep(); + *obj = NULL; /* + * Since we can't sleep attempt an emergency allocation to satisfy + * the request. The only alterative is to fail the allocation but + * it's preferable try. The use of KM_NOSLEEP is expected to be rare. + */ + if (flags & KM_NOSLEEP) + return (spl_emergency_alloc(skc, flags, obj)); + + might_sleep(); + + /* * Before allocating a new slab wait for any reaping to complete and * then return so the local magazine can be rechecked for new objects. */ |