diff options
Diffstat (limited to 'libglusterfs/src/stack.h')
| -rw-r--r-- | libglusterfs/src/stack.h | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/libglusterfs/src/stack.h b/libglusterfs/src/stack.h index a91b635e47e..0e8b705bdf7 100644 --- a/libglusterfs/src/stack.h +++ b/libglusterfs/src/stack.h @@ -82,6 +82,8 @@ struct _call_frame_t { const char *unwind_to; }; +#define SMALL_GROUP_COUNT 128 + struct _call_stack_t { union { struct list_head all_frames; @@ -99,7 +101,9 @@ struct _call_stack_t { gid_t gid; pid_t pid; uint16_t ngrps; - uint32_t groups[GF_MAX_AUX_GROUPS]; + uint32_t groups_small[SMALL_GROUP_COUNT]; + uint32_t *groups_large; + uint32_t *groups; gf_lkowner_t lk_owner; glusterfs_ctx_t *ctx; @@ -174,6 +178,9 @@ STACK_DESTROY (call_stack_t *stack) while (stack->frames.next) { FRAME_DESTROY (stack->frames.next); } + + GF_FREE (stack->groups_large); + mem_put (stack); if (local) @@ -370,6 +377,24 @@ STACK_RESET (call_stack_t *stack) } while (0) +static inline int +call_stack_alloc_groups (call_stack_t *stack, int ngrps) +{ + if (ngrps <= SMALL_GROUP_COUNT) { + stack->groups = stack->groups_small; + } else { + stack->groups_large = GF_CALLOC (sizeof (gid_t), ngrps, + gf_common_mt_groups_t); + if (!stack->groups_large) + return -1; + stack->groups = stack->groups_large; + } + + stack->ngrps = ngrps; + + return 0; +} + static inline call_frame_t * copy_frame (call_frame_t *frame) { @@ -393,8 +418,12 @@ copy_frame (call_frame_t *frame) newstack->ngrps = oldstack->ngrps; newstack->op = oldstack->op; newstack->type = oldstack->type; + if (call_stack_alloc_groups (newstack, oldstack->ngrps) != 0) { + mem_put (newstack); + return NULL; + } memcpy (newstack->groups, oldstack->groups, - sizeof (gid_t) * GF_MAX_AUX_GROUPS); + sizeof (gid_t) * oldstack->ngrps); newstack->unique = oldstack->unique; newstack->frames.this = frame->this; |