diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/mempool.c | 30 |
1 files changed, 9 insertions, 21 deletions
diff --git a/mm/mempool.c b/mm/mempool.c index d691b5c..e9a0a63 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -198,36 +198,22 @@ void * mempool_alloc(mempool_t *pool, unsigned int __nocast gfp_mask) void *element; unsigned long flags; DEFINE_WAIT(wait); - int gfp_nowait; + int gfp_temp; + + might_sleep_if(gfp_mask & __GFP_WAIT); gfp_mask |= __GFP_NOMEMALLOC; /* don't allocate emergency reserves */ gfp_mask |= __GFP_NORETRY; /* don't loop in __alloc_pages */ gfp_mask |= __GFP_NOWARN; /* failures are OK */ - gfp_nowait = gfp_mask & ~(__GFP_WAIT | __GFP_IO); - might_sleep_if(gfp_mask & __GFP_WAIT); + gfp_temp = gfp_mask & ~(__GFP_WAIT|__GFP_IO); + repeat_alloc: - element = pool->alloc(gfp_nowait, pool->pool_data); + + element = pool->alloc(gfp_temp, pool->pool_data); if (likely(element != NULL)) return element; - /* - * If the pool is less than 50% full and we can perform effective - * page reclaim then try harder to allocate an element. - */ - mb(); - if ((gfp_mask & __GFP_FS) && (gfp_mask != gfp_nowait) && - (pool->curr_nr <= pool->min_nr/2)) { - element = pool->alloc(gfp_mask, pool->pool_data); - if (likely(element != NULL)) - return element; - } - - /* - * Kick the VM at this point. - */ - wakeup_bdflush(0); - spin_lock_irqsave(&pool->lock, flags); if (likely(pool->curr_nr)) { element = remove_element(pool); @@ -240,6 +226,8 @@ repeat_alloc: if (!(gfp_mask & __GFP_WAIT)) return NULL; + /* Now start performing page reclaim */ + gfp_temp = gfp_mask; prepare_to_wait(&pool->wait, &wait, TASK_UNINTERRUPTIBLE); mb(); if (!pool->curr_nr) |