diff options
66 files changed, 210 insertions, 172 deletions
diff --git a/Documentation/vm/balance b/Documentation/vm/balance index c46e68c..9645954 100644 --- a/Documentation/vm/balance +++ b/Documentation/vm/balance @@ -1,12 +1,14 @@ Started Jan 2000 by Kanoj Sarcar <kanoj@sgi.com> -Memory balancing is needed for non __GFP_WAIT as well as for non -__GFP_IO allocations. +Memory balancing is needed for !__GFP_ATOMIC and !__GFP_KSWAPD_RECLAIM as +well as for non __GFP_IO allocations. -There are two reasons to be requesting non __GFP_WAIT allocations: -the caller can not sleep (typically intr context), or does not want -to incur cost overheads of page stealing and possible swap io for -whatever reasons. +The first reason why a caller may avoid reclaim is that the caller can not +sleep due to holding a spinlock or is in interrupt context. The second may +be that the caller is willing to fail the allocation without incurring the +overhead of page reclaim. This may happen for opportunistic high-order +allocation requests that have order-0 fallback options. In such cases, +the caller may also wish to avoid waking kswapd. __GFP_IO allocation requests are made to prevent file system deadlocks. diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index ad4eb2d..e62400e 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -651,12 +651,12 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, if (nommu()) addr = __alloc_simple_buffer(dev, size, gfp, &page); - else if (dev_get_cma_area(dev) && (gfp & __GFP_WAIT)) + else if (dev_get_cma_area(dev) && (gfp & __GFP_DIRECT_RECLAIM)) addr = __alloc_from_contiguous(dev, size, prot, &page, caller, want_vaddr); else if (is_coherent) addr = __alloc_simple_buffer(dev, size, gfp, &page); - else if (!(gfp & __GFP_WAIT)) + else if (!gfpflags_allow_blocking(gfp)) addr = __alloc_from_pool(size, &page); else addr = __alloc_remap_buffer(dev, size, gfp, prot, &page, @@ -1363,7 +1363,7 @@ static void *arm_iommu_alloc_attrs(struct device *dev, size_t size, *handle = DMA_ERROR_CODE; size = PAGE_ALIGN(size); - if (!(gfp & __GFP_WAIT)) + if (!gfpflags_allow_blocking(gfp)) return __iommu_alloc_atomic(dev, size, handle); /* diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c index 7c34f71..c5f9a9e 100644 --- a/arch/arm/xen/mm.c +++ b/arch/arm/xen/mm.c @@ -25,7 +25,7 @@ unsigned long xen_get_swiotlb_free_pages(unsigned int order) { struct memblock_region *reg; - gfp_t flags = __GFP_NOWARN; + gfp_t flags = __GFP_NOWARN|__GFP_KSWAPD_RECLAIM; for_each_memblock(memory, reg) { if (reg->base < (phys_addr_t)0xffffffff) { diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 6320361..bb4bf6a 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -100,7 +100,7 @@ static void *__dma_alloc_coherent(struct device *dev, size_t size, if (IS_ENABLED(CONFIG_ZONE_DMA) && dev->coherent_dma_mask <= DMA_BIT_MASK(32)) flags |= GFP_DMA; - if (dev_get_cma_area(dev) && (flags & __GFP_WAIT)) { + if (dev_get_cma_area(dev) && gfpflags_allow_blocking(flags)) { struct page *page; void *addr; @@ -148,7 +148,7 @@ static void *__dma_alloc(struct device *dev, size_t size, size = PAGE_ALIGN(size); - if (!coherent && !(flags & __GFP_WAIT)) { + if (!coherent && !gfpflags_allow_blocking(flags)) { struct page *page = NULL; void *addr = __alloc_from_pool(size, &page, flags); diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index cd99433..6ba014c 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -90,7 +90,7 @@ void *dma_generic_alloc_coherent(struct device *dev, size_t size, again: page = NULL; /* CMA can be used only in the context which permits sleeping */ - if (flag & __GFP_WAIT) { + if (gfpflags_allow_blocking(flag)) { page = dma_alloc_from_contiguous(dev, count, get_order(size)); if (page && page_to_phys(page) + size > dma_mask) { dma_release_from_contiguous(dev, page, count); diff --git a/block/bio.c b/block/bio.c index ad3f276..4f184d9 100644 --- a/block/bio.c +++ b/block/bio.c @@ -211,7 +211,7 @@ fallback: bvl = mempool_alloc(pool, gfp_mask); } else { struct biovec_slab *bvs = bvec_slabs + *idx; - gfp_t __gfp_mask = gfp_mask & ~(__GFP_WAIT | __GFP_IO); + gfp_t __gfp_mask = gfp_mask & ~(__GFP_DIRECT_RECLAIM | __GFP_IO); /* * Make this allocation restricted and don't dump info on @@ -221,11 +221,11 @@ fallback: __gfp_mask |= __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN; /* - * Try a slab allocation. If this fails and __GFP_WAIT + * Try a slab allocation. If this fails and __GFP_DIRECT_RECLAIM * is set, retry with the 1-entry mempool */ bvl = kmem_cache_alloc(bvs->slab, __gfp_mask); - if (unlikely(!bvl && (gfp_mask & __GFP_WAIT))) { + if (unlikely(!bvl && (gfp_mask & __GFP_DIRECT_RECLAIM))) { *idx = BIOVEC_MAX_IDX; goto fallback; } @@ -395,12 +395,12 @@ static void punt_bios_to_rescuer(struct bio_set *bs) * If @bs is NULL, uses kmalloc() to allocate the bio; else the allocation is * backed by the @bs's mempool. * - * When @bs is not NULL, if %__GFP_WAIT is set then bio_alloc will always be - * able to allocate a bio. This is due to the mempool guarantees. To make this - * work, callers must never allocate more than 1 bio at a time from this pool. - * Callers that need to allocate more than 1 bio must always submit the - * previously allocated bio for IO before attempting to allocate a new one. - * Failure to do so can cause deadlocks under memory pressure. + * When @bs is not NULL, if %__GFP_DIRECT_RECLAIM is set then bio_alloc will + * always be able to allocate a bio. This is due to the mempool guarantees. + * To make this work, callers must never allocate more than 1 bio at a time + * from this pool. Callers that need to allocate more than 1 bio must always + * submit the previously allocated bio for IO before attempting to allocate + * a new one. Failure to do so can cause deadlocks under memory pressure. * * Note that when running under generic_make_request() (i.e. any block * driver), bios are not submitted until after you return - see the code in @@ -459,13 +459,13 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs) * We solve this, and guarantee forward progress, with a rescuer * workqueue per bio_set. If we go to allocate and there are * bios on current->bio_list, we first try the allocation - * without __GFP_WAIT; if that fails, we punt those bios we - * would be blocking to the rescuer workqueue before we retry - * with the original gfp_flags. + * without __GFP_DIRECT_RECLAIM; if that fails, we punt those + * bios we would be blocking to the rescuer workqueue before + * we retry with the original gfp_flags. */ if (current->bio_list && !bio_list_empty(current->bio_list)) - gfp_mask &= ~__GFP_WAIT; + gfp_mask &= ~__GFP_DIRECT_RECLAIM; p = mempool_alloc(bs->bio_pool, gfp_mask); if (!p && gfp_mask != saved_gfp) { diff --git a/block/blk-core.c b/block/blk-core.c index 89eec79..9e32f08 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1206,8 +1206,8 @@ rq_starved: * @bio: bio to allocate request for (can be %NULL) * @gfp_mask: allocation mask * - * Get a free request from @q. If %__GFP_WAIT is set in @gfp_mask, this - * function keeps retrying under memory pressure and fails iff @q is dead. + * Get a free request from @q. If %__GFP_DIRECT_RECLAIM is set in @gfp_mask, + * this function keeps retrying under memory pressure and fails iff @q is dead. * * Must be called with @q->queue_lock held and, * Returns ERR_PTR on failure, with @q->queue_lock held. @@ -1227,7 +1227,7 @@ retry: if (!IS_ERR(rq)) return rq; - if (!(gfp_mask & __GFP_WAIT) || unlikely(blk_queue_dying(q))) { + if (!gfpflags_allow_blocking(gfp_mask) || unlikely(blk_queue_dying(q))) { blk_put_rl(rl); return rq; } @@ -1305,11 +1305,11 @@ EXPORT_SYMBOL(blk_get_request); * BUG. * * WARNING: When allocating/cloning a bio-chain, careful consideration should be - * given to how you allocate bios. In particular, you cannot use __GFP_WAIT for - * anything but the first bio in the chain. Otherwise you risk waiting for IO - * completion of a bio that hasn't been submitted yet, thus resulting in a - * deadlock. Alternatively bios should be allocated using bio_kmalloc() instead - * of bio_alloc(), as that avoids the mempool deadlock. + * given to how you allocate bios. In particular, you cannot use + * __GFP_DIRECT_RECLAIM for anything but the first bio in the chain. Otherwise + * you risk waiting for IO completion of a bio that hasn't been submitted yet, + * thus resulting in a deadlock. Alternatively bios should be allocated using + * bio_kmalloc() instead of bio_alloc(), as that avoids the mempool deadlock. * If possible a big IO should be split into smaller parts when allocation * fails. Partial allocation should not be an error, or you risk a live-lock. */ diff --git a/block/blk-ioc.c b/block/blk-ioc.c index 1a27f45..381cb50 100644 --- a/block/blk-ioc.c +++ b/block/blk-ioc.c @@ -289,7 +289,7 @@ struct io_context *get_task_io_context(struct task_struct *task, { struct io_context *ioc; - might_sleep_if(gfp_flags & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(gfp_flags)); do { task_lock(task); diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index 60ac684..a07ca34 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -268,7 +268,7 @@ static int bt_get(struct blk_mq_alloc_data *data, if (tag != -1) return tag; - if (!(data->gfp & __GFP_WAIT)) + if (!gfpflags_allow_blocking(data->gfp)) return -1; bs = bt_wait_ptr(bt, hctx); diff --git a/block/blk-mq.c b/block/blk-mq.c index 1c27b3e..68c0a34 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -244,11 +244,11 @@ struct request *blk_mq_alloc_request(struct request_queue *q, int rw, gfp_t gfp, ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); - blk_mq_set_alloc_data(&alloc_data, q, gfp & ~__GFP_WAIT, + blk_mq_set_alloc_data(&alloc_data, q, gfp & ~__GFP_DIRECT_RECLAIM, reserved, ctx, hctx); rq = __blk_mq_alloc_request(&alloc_data, rw); - if (!rq && (gfp & __GFP_WAIT)) { + if (!rq && (gfp & __GFP_DIRECT_RECLAIM)) { __blk_mq_run_hw_queue(hctx); blk_mq_put_ctx(ctx); @@ -1186,7 +1186,7 @@ static struct request *blk_mq_map_request(struct request_queue *q, ctx = blk_mq_get_ctx(q); hctx = q->mq_ops->map_queue(q, ctx->cpu); blk_mq_set_alloc_data(&alloc_data, q, - __GFP_WAIT|GFP_ATOMIC, false, ctx, hctx); + __GFP_WAIT|__GFP_HIGH, false, ctx, hctx); rq = __blk_mq_alloc_request(&alloc_data, rw); ctx = alloc_data.ctx; hctx = alloc_data.hctx; diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index c097909..b4b5680 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -357,7 +357,8 @@ drbd_alloc_peer_req(struct drbd_peer_device *peer_device, u64 id, sector_t secto } if (has_payload && data_size) { - page = drbd_alloc_pages(peer_device, nr_pages, (gfp_mask & __GFP_WAIT)); + page = drbd_alloc_pages(peer_device, nr_pages, + gfpflags_allow_blocking(gfp_mask)); if (!page) goto fail; } diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c index e229425..1b709a4 100644 --- a/drivers/block/osdblk.c +++ b/drivers/block/osdblk.c @@ -271,7 +271,7 @@ static struct bio *bio_chain_clone(struct bio *old_chain, gfp_t gfpmask) goto err_out; tmp->bi_bdev = NULL; - gfpmask &= ~__GFP_WAIT; + gfpmask &= ~__GFP_DIRECT_RECLAIM; tmp->bi_next = NULL; if (!new_chain) diff --git a/drivers/connector/connector.c b/drivers/connector/connector.c index 30f5228..d7373ca 100644 --- a/drivers/connector/connector.c +++ b/drivers/connector/connector.c @@ -124,7 +124,8 @@ int cn_netlink_send_mult(struct cn_msg *msg, u16 len, u32 portid, u32 __group, if (group) return netlink_broadcast(dev->nls, skb, portid, group, gfp_mask); - return netlink_unicast(dev->nls, skb, portid, !(gfp_mask&__GFP_WAIT)); + return netlink_unicast(dev->nls, skb, portid, + !gfpflags_allow_blocking(gfp_mask)); } EXPORT_SYMBOL_GPL(cn_netlink_send_mult); diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index 2a3973a..36a7c2d 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -486,7 +486,7 @@ static int ioctl_get_info(struct client *client, union ioctl_arg *arg) static int add_client_resource(struct client *client, struct client_resource *resource, gfp_t gfp_mask) { - bool preload = !!(gfp_mask & __GFP_WAIT); + bool preload = gfpflags_allow_blocking(gfp_mask); unsigned long flags; int ret; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 4d631a9..d58cb9e 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -2215,7 +2215,7 @@ i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) */ mapping = file_inode(obj->base.filp)->i_mapping; gfp = mapping_gfp_mask(mapping); - gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; + gfp |= __GFP_NORETRY | __GFP_NOWARN; gfp &= ~(__GFP_IO | __GFP_WAIT); sg = st->sgl; st->nents = 0; diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index 8c014b3..59ab264 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -1083,7 +1083,7 @@ static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) static int send_mad(struct ib_sa_query *query, int timeout_ms, gfp_t gfp_mask) { - bool preload = !!(gfp_mask & __GFP_WAIT); + bool preload = gfpflags_allow_blocking(gfp_mask); unsigned long flags; int ret, id; diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 0d533bb..8b2be1e 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2668,7 +2668,7 @@ static void *alloc_coherent(struct device *dev, size_t size, page = alloc_pages(flag | __GFP_NOWARN, get_order(size)); if (!page) { - if (!(flag & __GFP_WAIT)) + if (!gfpflags_allow_blocking(flag)) return NULL; page = dma_alloc_from_contiguous(dev, size >> PAGE_SHIFT, diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 7cf80c1..f1042da 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3647,7 +3647,7 @@ static void *intel_alloc_coherent(struct device *dev, size_t size, flags |= GFP_DMA32; } - if (flags & __GFP_WAIT) { + if (gfpflags_allow_blocking(flags)) { unsigned int count = size >> PAGE_SHIFT; page = dma_alloc_from_contiguous(dev, count, order); diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c index 3729b39..917d47e 100644 --- a/drivers/md/dm-crypt.c +++ b/drivers/md/dm-crypt.c @@ -994,7 +994,7 @@ static struct bio *crypt_alloc_buffer(struct dm_crypt_io *io, unsigned size) struct bio_vec *bvec; retry: - if (unlikely(gfp_mask & __GFP_WAIT)) + if (unlikely(gfp_mask & __GFP_DIRECT_RECLAIM)) mutex_lock(&cc->bio_alloc_lock); clone = bio_alloc_bioset(GFP_NOIO, nr_iovecs, cc->bs); @@ -1010,7 +1010,7 @@ retry: if (!page) { crypt_free_buffer_pages(cc, clone); bio_put(clone); - gfp_mask |= __GFP_WAIT; + gfp_mask |= __GFP_DIRECT_RECLAIM; goto retry; } @@ -1027,7 +1027,7 @@ retry: } return_clone: - if (unlikely(gfp_mask & __GFP_WAIT)) + if (unlikely(gfp_mask & __GFP_DIRECT_RECLAIM)) mutex_unlock(&cc->bio_alloc_lock); return clone; diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c index 3a7cade..1452ed9 100644 --- a/drivers/md/dm-kcopyd.c +++ b/drivers/md/dm-kcopyd.c @@ -244,7 +244,7 @@ static int kcopyd_get_pages(struct dm_kcopyd_client *kc, *pages = NULL; do { - pl = alloc_pl(__GFP_NOWARN | __GFP_NORETRY); + pl = alloc_pl(__GFP_NOWARN | __GFP_NORETRY | __GFP_KSWAPD_RECLAIM); if (unlikely(!pl)) { /* Use reserved pages */ pl = kc->pages; diff --git a/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c b/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c index 1bd2fd4..4432fd6 100644 --- a/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c +++ b/drivers/media/pci/solo6x10/solo6x10-v4l2-enc.c @@ -1297,7 +1297,7 @@ static struct solo_enc_dev *solo_enc_alloc(struct solo_dev *solo_dev, solo_enc->vidq.ops = &solo_enc_video_qops; solo_enc->vidq.mem_ops = &vb2_dma_sg_memops; solo_enc->vidq.drv_priv = solo_enc; - solo_enc->vidq.gfp_flags = __GFP_DMA32; + solo_enc->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM; solo_enc->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; solo_enc->vidq.buf_struct_size = sizeof(struct solo_vb2_buf); solo_enc->vidq.lock = &solo_enc->lock; diff --git a/drivers/media/pci/solo6x10/solo6x10-v4l2.c b/drivers/media/pci/solo6x10/solo6x10-v4l2.c index 26df903..f7ce493 100644 --- a/drivers/media/pci/solo6x10/solo6x10-v4l2.c +++ b/drivers/media/pci/solo6x10/solo6x10-v4l2.c @@ -678,7 +678,7 @@ int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr) solo_dev->vidq.mem_ops = &vb2_dma_contig_memops; solo_dev->vidq.drv_priv = solo_dev; solo_dev->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - solo_dev->vidq.gfp_flags = __GFP_DMA32; + solo_dev->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM; solo_dev->vidq.buf_struct_size = sizeof(struct solo_vb2_buf); solo_dev->vidq.lock = &solo_dev->lock; ret = vb2_queue_init(&solo_dev->vidq); diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c index 4c3293d..46642ef 100644 --- a/drivers/media/pci/tw68/tw68-video.c +++ b/drivers/media/pci/tw68/tw68-video.c @@ -979,7 +979,7 @@ int tw68_video_init2(struct tw68_dev *dev, int video_nr) dev->vidq.ops = &tw68_video_qops; dev->vidq.mem_ops = &vb2_dma_sg_memops; dev->vidq.drv_priv = dev; - dev->vidq.gfp_flags = __GFP_DMA32; + dev->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM; dev->vidq.buf_struct_size = sizeof(struct tw68_buf); dev->vidq.lock = &dev->lock; dev->vidq.min_buffers_needed = 2; diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 8bbbb75..2dfb291 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -1188,8 +1188,7 @@ EXPORT_SYMBOL_GPL(mtd_writev); */ void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size) { - gfp_t flags = __GFP_NOWARN | __GFP_WAIT | - __GFP_NORETRY | __GFP_NO_KSWAPD; + gfp_t flags = __GFP_NOWARN | __GFP_DIRECT_RECLAIM | __GFP_NORETRY; size_t min_alloc = max_t(size_t, mtd->writesize, PAGE_SIZE); void *kbuf; diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index 44173be..f8d7a2f 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -691,7 +691,7 @@ static void *bnx2x_frag_alloc(const struct bnx2x_fastpath *fp, gfp_t gfp_mask) { if (fp->rx_frag_size) { /* GFP_KERNEL allocations are used only during initialization */ - if (unlikely(gfp_mask & __GFP_WAIT)) + if (unlikely(gfpflags_allow_blocking(gfp_mask))) return (void *)__get_free_page(gfp_mask); return netdev_alloc_frag(fp->rx_frag_size); diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c index ada724a..d4c3e55 100644 --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -27,7 +27,7 @@ #include "ion_priv.h" static gfp_t high_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN | - __GFP_NORETRY) & ~__GFP_WAIT; + __GFP_NORETRY) & ~__GFP_DIRECT_RECLAIM; static gfp_t low_order_gfp_flags = (GFP_HIGHUSER | __GFP_ZERO | __GFP_NOWARN); static const unsigned int orders[] = {8, 4, 0}; static const int num_orders = ARRAY_SIZE(orders); diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h b/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h index 6af733d..f0b0423 100644 --- a/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h +++ b/drivers/staging/lustre/include/linux/libcfs/libcfs_private.h @@ -95,7 +95,7 @@ do { \ do { \ LASSERT(!in_interrupt() || \ ((size) <= LIBCFS_VMALLOC_SIZE && \ - ((mask) & __GFP_WAIT) == 0)); \ + !gfpflags_allow_blocking(mask))); \ } while (0) #define LIBCFS_ALLOC_POST(ptr, size) \ diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 0a94895..692ccc6 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -2244,7 +2244,7 @@ static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, { struct u132 *u132 = hcd_to_u132(hcd); if (irqs_disabled()) { - if (__GFP_WAIT & mem_flags) { + if (gfpflags_allow_blocking(mem_flags)) { printk(KERN_ERR "invalid context for function that might sleep\n"); return -EINVAL; } diff --git a/drivers/video/fbdev/vermilion/vermilion.c b/drivers/video/fbdev/vermilion/vermilion.c index 6b70d7f..1c1e95a 100644 --- a/drivers/video/fbdev/vermilion/vermilion.c +++ b/drivers/video/fbdev/vermilion/vermilion.c @@ -99,7 +99,7 @@ static int vmlfb_alloc_vram_area(struct vram_area *va, unsigned max_order, * below the first 16MB. */ - flags = __GFP_DMA | __GFP_HIGH; + flags = __GFP_DMA | __GFP_HIGH | __GFP_KSWAPD_RECLAIM; va->logical = __get_free_pages(flags, --max_order); } while (va->logical == 0 && max_order > min_order); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 1e60d00..c339d56 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2572,7 +2572,7 @@ int open_ctree(struct super_block *sb, fs_info->commit_interval = BTRFS_DEFAULT_COMMIT_INTERVAL; fs_info->avg_delayed_ref_runtime = NSEC_PER_SEC >> 6; /* div by 64 */ /* readahead state */ - INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_WAIT); + INIT_RADIX_TREE(&fs_info->reada_tree, GFP_NOFS & ~__GFP_DIRECT_RECLAIM); spin_lock_init(&fs_info->reada_lock); fs_info->thread_pool_size = min_t(unsigned long, diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 3915c94..032abfb 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -594,7 +594,7 @@ int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, if (bits & (EXTENT_IOBITS | EXTENT_BOUNDARY)) clear = 1; again: - if (!prealloc && (mask & __GFP_WAIT)) { + if (!prealloc && gfpflags_allow_blocking(mask)) { /* * Don't care for allocation failure here because we might end * up not needing the pre-allocated extent state at all, which @@ -718,7 +718,7 @@ search_again: if (start > end) goto out; spin_unlock(&tree->lock); - if (mask & __GFP_WAIT) + if (gfpflags_allow_blocking(mask)) cond_resched(); goto again; } @@ -850,7 +850,7 @@ __set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, bits |= EXTENT_FIRST_DELALLOC; again: - if (!prealloc && (mask & __GFP_WAIT)) { + if (!prealloc && gfpflags_allow_blocking(mask)) { prealloc = alloc_extent_state(mask); BUG_ON(!prealloc); } @@ -1028,7 +1028,7 @@ search_again: if (start > end) goto out; spin_unlock(&tree->lock); - if (mask & __GFP_WAIT) + if (gfpflags_allow_blocking(mask)) cond_resched(); goto again; } @@ -1076,7 +1076,7 @@ int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, btrfs_debug_check_extent_io_range(tree, start, end); again: - if (!prealloc && (mask & __GFP_WAIT)) { + if (!prealloc && gfpflags_allow_blocking(mask)) { /* * Best effort, don't worry if extent state allocation fails * here for the first iteration. We might have a cached state @@ -1253,7 +1253,7 @@ search_again: if (start > end) goto out; spin_unlock(&tree->lock); - if (mask & __GFP_WAIT) + if (gfpflags_allow_blocking(mask)) cond_resched(); first_iteration = false; goto again; @@ -4319,7 +4319,7 @@ int try_release_extent_mapping(struct extent_map_tree *map, u64 start = page_offset(page); u64 end = start + PAGE_CACHE_SIZE - 1; - if ((mask & __GFP_WAIT) && + if (gfpflags_allow_blocking(mask) && page->mapping->host->i_size > 16 * 1024 * 1024) { u64 len; while (start <= end) { diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 6fc73586..e023919 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -156,8 +156,8 @@ static struct btrfs_device *__alloc_device(void) spin_lock_init(&dev->reada_lock); atomic_set(&dev->reada_in_flight, 0); atomic_set(&dev->dev_stats_ccnt, 0); - INIT_RADIX_TREE(&dev->reada_zones, GFP_NOFS & ~__GFP_WAIT); - INIT_RADIX_TREE(&dev->reada_extents, GFP_NOFS & ~__GFP_WAIT); + INIT_RADIX_TREE(&dev->reada_zones, GFP_NOFS & ~__GFP_DIRECT_RECLAIM); + INIT_RADIX_TREE(&dev->reada_extents, GFP_NOFS & ~__GFP_DIRECT_RECLAIM); return dev; } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index a63c7b0..49f6c78 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1058,7 +1058,7 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page, return 0; if (journal) return jbd2_journal_try_to_free_buffers(journal, page, - wait & ~__GFP_WAIT); + wait & ~__GFP_DIRECT_RECLAIM); return try_to_free_buffers(page); } diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c index d403c69..43040721 100644 --- a/fs/fscache/cookie.c +++ b/fs/fscache/cookie.c @@ -111,7 +111,7 @@ struct fscache_cookie *__fscache_acquire_cookie( /* radix tree insertion won't use the preallocation pool unless it's * told it may not wait */ - INIT_RADIX_TREE(&cookie->stores, GFP_NOFS & ~__GFP_WAIT); + INIT_RADIX_TREE(&cookie->stores, GFP_NOFS & ~__GFP_DIRECT_RECLAIM); switch (cookie->def->type) { case FSCACHE_COOKIE_TYPE_INDEX: diff --git a/fs/fscache/page.c b/fs/fscache/page.c index 483bbc6..79483b3 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -58,7 +58,7 @@ bool release_page_wait_timeout(struct fscache_cookie *cookie, struct page *page) /* * decide whether a page can be released, possibly by cancelling a store to it - * - we're allowed to sleep if __GFP_WAIT is flagged + * - we're allowed to sleep if __GFP_DIRECT_RECLAIM is flagged */ bool __fscache_maybe_release_page(struct fscache_cookie *cookie, struct page *page, @@ -122,7 +122,7 @@ page_busy: * allocator as the work threads writing to the cache may all end up * sleeping on memory allocation, so we may need to impose a timeout * too. */ - if (!(gfp & __GFP_WAIT) || !(gfp & __GFP_FS)) { + if (!(gfp & __GFP_DIRECT_RECLAIM) || !(gfp & __GFP_FS)) { fscache_stat(&fscache_n_store_vmscan_busy); return false; } @@ -132,7 +132,7 @@ page_busy: _debug("fscache writeout timeout page: %p{%lx}", page, page->index); - gfp &= ~__GFP_WAIT; + gfp &= ~__GFP_DIRECT_RECLAIM; goto try_again; } EXPORT_SYMBOL(__fscache_maybe_release_page); diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index 6b8338e..89463ee 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -1937,8 +1937,8 @@ out: * @journal: journal for operation * @page: to try and free * @gfp_mask: we use the mask to detect how hard should we try to release - * buffers. If __GFP_WAIT and __GFP_FS is set, we wait for commit code to - * release the buffers. + * buffers. If __GFP_DIRECT_RECLAIM and __GFP_FS is set, we wait for commit + * code to release the buffers. * * * For all the buffers on this page, diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 37f639d..93e2364 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -473,8 +473,8 @@ static int nfs_release_page(struct page *page, gfp_t gfp) dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page); /* Always try to initiate a 'commit' if relevant, but only - * wait for it if __GFP_WAIT is set. Even then, only wait 1 - * second and only if the 'bdi' is not congested. + * wait for it if the caller allows blocking. Even then, + * only wait 1 second and only if the 'bdi' is not congested. * Waiting indefinitely can cause deadlocks when the NFS * server is on this machine, when a new TCP connection is * needed and in other rare cases. There is no particular @@ -484,7 +484,7 @@ static int nfs_release_page(struct page *page, gfp_t gfp) if (mapping) { struct nfs_server *nfss = NFS_SERVER(mapping->host); nfs_commit_inode(mapping->host, 0); - if ((gfp & __GFP_WAIT) && + if (gfpflags_allow_blocking(gfp) && !bdi_write_congested(&nfss->backing_dev_info)) { wait_on_page_bit_killable_timeout(page, PG_private, HZ); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index eac9549..587174f 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -525,7 +525,7 @@ xfs_qm_shrink_scan( unsigned long freed; int error; - if ((sc->gfp_mask & (__GFP_FS|__GFP_WAIT)) != (__GFP_FS|__GFP_WAIT)) + if ((sc->gfp_mask & (__GFP_FS|__GFP_DIRECT_RECLAIM)) != (__GFP_FS|__GFP_DIRECT_RECLAIM)) return 0; INIT_LIST_HEAD(&isol.buffers); diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 440fca3..b56e811 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -29,12 +29,13 @@ struct vm_area_struct; #define ___GFP_NOMEMALLOC 0x10000u #define ___GFP_HARDWALL 0x20000u #define ___GFP_THISNODE 0x40000u -#define ___GFP_WAIT 0x80000u +#define ___GFP_ATOMIC 0x80000u #define ___GFP_NOACCOUNT 0x100000u #define ___GFP_NOTRACK 0x200000u -#define ___GFP_NO_KSWAPD 0x400000u +#define ___GFP_DIRECT_RECLAIM 0x400000u #define ___GFP_OTHER_NODE 0x800000u #define ___GFP_WRITE 0x1000000u +#define ___GFP_KSWAPD_RECLAIM 0x2000000u /* If the above are modified, __GFP_BITS_SHIFT may need updating */ /* @@ -71,7 +72,7 @@ struct vm_area_struct; * __GFP_MOVABLE: Flag that this page will be movable by the page migration * mechanism or reclaimed */ -#define __GFP_WAIT ((__force gfp_t)___GFP_WAIT) /* Can wait and reschedule? */ +#define __GFP_ATOMIC ((__force gfp_t)___GFP_ATOMIC) /* Caller cannot wait or reschedule */ #define __GFP_HIGH ((__force gfp_t)___GFP_HIGH) /* Should access emergency pools? */ #define __GFP_IO ((__force gfp_t)___GFP_IO) /* Can start physical IO? */ #define __GFP_FS ((__force gfp_t)___GFP_FS) /* Can call down to low-level FS? */ @@ -94,23 +95,37 @@ struct vm_area_struct; #define __GFP_NOACCOUNT ((__force gfp_t)___GFP_NOACCOUNT) /* Don't account to kmemcg */ #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ -#define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */ #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */ /* + * A caller that is willing to wait may enter direct reclaim and will + * wake kswapd to reclaim pages in the background until the high + * watermark is met. A caller may wish to clear __GFP_DIRECT_RECLAIM to + * avoid unnecessary delays when a fallback option is available but + * still allow kswapd to reclaim in the background. The kswapd flag + * can be cleared when the reclaiming of pages would cause unnecessary + * disruption. + */ +#define __GFP_WAIT ((__force gfp_t)(___GFP_DIRECT_RECLAIM|___GFP_KSWAPD_RECLAIM)) +#define __GFP_DIRECT_RECLAIM ((__force gfp_t)___GFP_DIRECT_RECLAIM) /* Caller can reclaim */ +#define __GFP_KSWAPD_RECLAIM ((__force gfp_t)___GFP_KSWAPD_RECLAIM) /* kswapd can wake */ + +/* * This may seem redundant, but it's a way of annotating false positives vs. * allocations that simply cannot be supported (e.g. page tables). */ #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK) -#define __GFP_BITS_SHIFT 25 /* Room for N __GFP_FOO bits */ +#define __GFP_BITS_SHIFT 26 /* Room for N __GFP_FOO bits */ #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1)) -/* This equals 0, but use constants in case they ever change */ -#define GFP_NOWAIT (GFP_ATOMIC & ~__GFP_HIGH) -/* GFP_ATOMIC means both !wait (__GFP_WAIT not set) and use emergency pool */ -#define GFP_ATOMIC (__GFP_HIGH) +/* + * GFP_ATOMIC callers can not sleep, need the allocation to succeed. + * A lower watermark is applied to allow access to "atomic reserves" + */ +#define GFP_ATOMIC (__GFP_HIGH|__GFP_ATOMIC|__GFP_KSWAPD_RECLAIM) +#define GFP_NOWAIT (__GFP_KSWAPD_RECLAIM) #define GFP_NOIO (__GFP_WAIT) #define GFP_NOFS (__GFP_WAIT | __GFP_IO) #define GFP_KERNEL (__GFP_WAIT | __GFP_IO | __GFP_FS) @@ -119,10 +134,10 @@ struct vm_area_struct; #define GFP_USER (__GFP_WAIT | __GFP_IO | __GFP_FS | __GFP_HARDWALL) #define GFP_HIGHUSER (GFP_USER | __GFP_HIGHMEM) #define GFP_HIGHUSER_MOVABLE (GFP_HIGHUSER | __GFP_MOVABLE) -#define GFP_IOFS (__GFP_IO | __GFP_FS) -#define GFP_TRANSHUGE (GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ - __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN | \ - __GFP_NO_KSWAPD) +#define GFP_IOFS (__GFP_IO | __GFP_FS | __GFP_KSWAPD_RECLAIM) +#define GFP_TRANSHUGE ((GFP_HIGHUSER_MOVABLE | __GFP_COMP | \ + __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) & \ + ~__GFP_KSWAPD_RECLAIM) /* This mask makes up all the page movable related flags */ #define GFP_MOVABLE_MASK (__GFP_RECLAIMABLE|__GFP_MOVABLE) @@ -164,6 +179,11 @@ static inline int gfpflags_to_migratetype(const gfp_t gfp_flags) return (gfp_flags & GFP_MOVABLE_MASK) >> GFP_MOVABLE_SHIFT; } +static inline bool gfpflags_allow_blocking(const gfp_t gfp_flags) +{ + return gfp_flags & __GFP_DIRECT_RECLAIM; +} + #ifdef CONFIG_HIGHMEM #define OPT_ZONE_HIGHMEM ZONE_HIGHMEM #else diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 24f4dfd..4355129 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1224,7 +1224,7 @@ static inline int skb_cloned(const struct sk_buff *skb) static inline int skb_unclone(struct sk_buff *skb, gfp_t pri) { - might_sleep_if(pri & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(pri)); if (skb_cloned(skb)) return pskb_expand_head(skb, 0, 0, pri); @@ -1308,7 +1308,7 @@ static inline int skb_shared(const struct sk_buff *skb) */ static inline struct sk_buff *skb_share_check(struct sk_buff *skb, gfp_t pri) { - might_sleep_if(pri & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(pri)); if (skb_shared(skb)) { struct sk_buff *nskb = skb_clone(skb, pri); @@ -1344,7 +1344,7 @@ static inline struct sk_buff *skb_share_check(struct sk_buff *skb, gfp_t pri) static inline struct sk_buff *skb_unshare(struct sk_buff *skb, gfp_t pri) { - might_sleep_if(pri & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(pri)); if (skb_cloned(skb)) { struct sk_buff *nskb = skb_copy(skb, pri); diff --git a/include/net/sock.h b/include/net/sock.h index f570e75e..bbf7c2c 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -2041,7 +2041,7 @@ struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp, */ static inline struct page_frag *sk_page_frag(struct sock *sk) { - if (sk->sk_allocation & __GFP_WAIT) + if (gfpflags_allow_blocking(sk->sk_allocation)) return ¤t->task_frag; return &sk->sk_frag; diff --git a/include/trace/events/gfpflags.h b/include/trace/events/gfpflags.h index d6fd8e5..dde6bf0 100644 --- a/include/trace/events/gfpflags.h +++ b/include/trace/events/gfpflags.h @@ -20,7 +20,7 @@ {(unsigned long)GFP_ATOMIC, "GFP_ATOMIC"}, \ {(unsigned long)GFP_NOIO, "GFP_NOIO"}, \ {(unsigned long)__GFP_HIGH, "GFP_HIGH"}, \ - {(unsigned long)__GFP_WAIT, "GFP_WAIT"}, \ + {(unsigned long)__GFP_ATOMIC, "GFP_ATOMIC"}, \ {(unsigned long)__GFP_IO, "GFP_IO"}, \ {(unsigned long)__GFP_COLD, "GFP_COLD"}, \ {(unsigned long)__GFP_NOWARN, "GFP_NOWARN"}, \ @@ -36,7 +36,8 @@ {(unsigned long)__GFP_RECLAIMABLE, "GFP_RECLAIMABLE"}, \ {(unsigned long)__GFP_MOVABLE, "GFP_MOVABLE"}, \ {(unsigned long)__GFP_NOTRACK, "GFP_NOTRACK"}, \ - {(unsigned long)__GFP_NO_KSWAPD, "GFP_NO_KSWAPD"}, \ + {(unsigned long)__GFP_DIRECT_RECLAIM, "GFP_DIRECT_RECLAIM"}, \ + {(unsigned long)__GFP_KSWAPD_RECLAIM, "GFP_KSWAPD_RECLAIM"}, \ {(unsigned long)__GFP_OTHER_NODE, "GFP_OTHER_NODE"} \ ) : "GFP_NOWAIT" diff --git a/kernel/audit.c b/kernel/audit.c index 8a056a3..5ffcbd3 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -1371,16 +1371,16 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, if (unlikely(audit_filter_type(type))) return NULL; - if (gfp_mask & __GFP_WAIT) { + if (gfp_mask & __GFP_DIRECT_RECLAIM) { if (audit_pid && audit_pid == current->pid) - gfp_mask &= ~__GFP_WAIT; + gfp_mask &= ~__GFP_DIRECT_RECLAIM; else reserve = 0; } while (audit_backlog_limit && skb_queue_len(&audit_skb_queue) > audit_backlog_limit + reserve) { - if (gfp_mask & __GFP_WAIT && audit_backlog_wait_time) { + if (gfp_mask & __GFP_DIRECT_RECLAIM && audit_backlog_wait_time) { long sleep_time; sleep_time = timeout_start + audit_backlog_wait_time - jiffies; diff --git a/kernel/cgroup.c b/kernel/cgroup.c index b9d0cce..f1603c1 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -299,7 +299,7 @@ static int cgroup_idr_alloc(struct idr *idr, void *ptr, int start, int end, idr_preload(gfp_mask); spin_lock_bh(&cgroup_idr_lock); - ret = idr_alloc(idr, ptr, start, end, gfp_mask & ~__GFP_WAIT); + ret = idr_alloc(idr, ptr, start, end, gfp_mask & ~__GFP_DIRECT_RECLAIM); spin_unlock_bh(&cgroup_idr_lock); idr_preload_end(); return ret; diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 4e49cc4..deae390 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -2738,7 +2738,7 @@ static void __lockdep_trace_alloc(gfp_t gfp_mask, unsigned long flags) return; /* no reclaim without waiting on it */ - if (!(gfp_mask & __GFP_WAIT)) + if (!(gfp_mask & __GFP_DIRECT_RECLAIM)) return; /* this guy won't enter reclaim */ diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 5235dd4..3a97060 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -1779,7 +1779,7 @@ alloc_highmem_pages(struct memory_bitmap *bm, unsigned int nr_highmem) while (to_alloc-- > 0) { struct page *page; - page = alloc_image_page(__GFP_HIGHMEM); + page = alloc_image_page(__GFP_HIGHMEM|__GFP_KSWAPD_RECLAIM); memory_bm_set_bit(bm, page_to_pfn(page)); } return nr_highmem; diff --git a/kernel/smp.c b/kernel/smp.c index 0785447..d903c02 100644 --- a/kernel/smp.c +++ b/kernel/smp.c @@ -669,7 +669,7 @@ void on_each_cpu_cond(bool (*cond_func)(int cpu, void *info), cpumask_var_t cpus; int cpu, ret; - might_sleep_if(gfp_flags & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(gfp_flags)); if (likely(zalloc_cpumask_var(&cpus, (gfp_flags|__GFP_NOWARN)))) { preempt_disable(); @@ -399,7 +399,7 @@ void idr_preload(gfp_t gfp_mask) * allocation guarantee. Disallow usage from those contexts. */ WARN_ON_ONCE(in_interrupt()); - might_sleep_if(gfp_mask & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(gfp_mask)); preempt_disable(); @@ -453,7 +453,7 @@ int idr_alloc(struct idr *idr, void *ptr, int start, int end, gfp_t gfp_mask) struct idr_layer *pa[MAX_IDR_LEVEL + 1]; int id; - might_sleep_if(gfp_mask & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(gfp_mask)); /* sanity checks */ if (WARN_ON_ONCE(start < 0)) diff --git a/lib/radix-tree.c b/lib/radix-tree.c index f9ebe1c..fcf5d98 100644 --- a/lib/radix-tree.c +++ b/lib/radix-tree.c @@ -188,7 +188,7 @@ radix_tree_node_alloc(struct radix_tree_root *root) * preloading in the interrupt anyway as all the allocations have to * be atomic. So just do normal allocation when in interrupt. */ - if (!(gfp_mask & __GFP_WAIT) && !in_interrupt()) { + if (!gfpflags_allow_blocking(gfp_mask) && !in_interrupt()) { struct radix_tree_preload *rtp; /* @@ -249,7 +249,7 @@ radix_tree_node_free(struct radix_tree_node *node) * with preemption not disabled. * * To make use of this facility, the radix tree must be initialised without - * __GFP_WAIT being passed to INIT_RADIX_TREE(). + * __GFP_DIRECT_RECLAIM being passed to INIT_RADIX_TREE(). */ static int __radix_tree_preload(gfp_t gfp_mask) { @@ -286,12 +286,12 @@ out: * with preemption not disabled. * * To make use of this facility, the radix tree must be initialised without - * __GFP_WAIT being passed to INIT_RADIX_TREE(). + * __GFP_DIRECT_RECLAIM being passed to INIT_RADIX_TREE(). */ int radix_tree_preload(gfp_t gfp_mask) { /* Warn on non-sensical use... */ - WARN_ON_ONCE(!(gfp_mask & __GFP_WAIT)); + WARN_ON_ONCE(!gfpflags_allow_blocking(gfp_mask)); return __radix_tree_preload(gfp_mask); } EXPORT_SYMBOL(radix_tree_preload); @@ -303,7 +303,7 @@ EXPORT_SYMBOL(radix_tree_preload); */ int radix_tree_maybe_preload(gfp_t gfp_mask) { - if (gfp_mask & __GFP_WAIT) + if (gfpflags_allow_blocking(gfp_mask)) return __radix_tree_preload(gfp_mask); /* Preloading doesn't help anything with this gfp mask, skip it */ preempt_disable(); diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 619984f..8ed2ffd 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -637,7 +637,7 @@ struct bdi_writeback *wb_get_create(struct backing_dev_info *bdi, { struct bdi_writeback *wb; - might_sleep_if(gfp & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(gfp)); if (!memcg_css->parent) return &bdi->wb; diff --git a/mm/dmapool.c b/mm/dmapool.c index 312a716..57312b5 100644 --- a/mm/dmapool.c +++ b/mm/dmapool.c @@ -326,7 +326,7 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags, size_t offset; void *retval; - might_sleep_if(mem_flags & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(mem_flags)); spin_lock_irqsave(&pool->lock, flags); list_for_each_entry(page, &pool->page_list, page_list) { diff --git a/mm/memcontrol.c b/mm/memcontrol.c index bc502e5..05374f0 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2046,7 +2046,7 @@ retry: if (unlikely(task_in_memcg_oom(current))) goto nomem; - if (!(gfp_mask & __GFP_WAIT)) + if (!gfpflags_allow_blocking(gfp_mask)) goto nomem; mem_cgroup_events(mem_over_limit, MEMCG_MAX, 1); @@ -4364,8 +4364,8 @@ static int mem_cgroup_do_precharge(unsigned long count) { int ret; - /* Try a single bulk charge without reclaim first */ - ret = try_charge(mc.to, GFP_KERNEL & ~__GFP_WAIT, count); + /* Try a single bulk charge without reclaim first, kswapd may wake */ + ret = try_charge(mc.to, GFP_KERNEL & ~__GFP_DIRECT_RECLAIM, count); if (!ret) { mc.precharge += count; return ret; diff --git a/mm/mempool.c b/mm/mempool.c index 4c533bc..004d42b 100644 --- a/mm/mempool.c +++ b/mm/mempool.c @@ -320,13 +320,13 @@ void * mempool_alloc(mempool_t *pool, gfp_t gfp_mask) gfp_t gfp_temp; VM_WARN_ON_ONCE(gfp_mask & __GFP_ZERO); - might_sleep_if(gfp_mask & __GFP_WAIT); + might_sleep_if(gfp_mask & __GFP_DIRECT_RECLAIM); 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_temp = gfp_mask & ~(__GFP_WAIT|__GFP_IO); + gfp_temp = gfp_mask & ~(__GFP_DIRECT_RECLAIM|__GFP_IO); repeat_alloc: @@ -349,7 +349,7 @@ repeat_alloc: } /* - * We use gfp mask w/o __GFP_WAIT or IO for the first round. If + * We use gfp mask w/o direct reclaim or IO for the first round. If * alloc failed with that and @pool was empty, retry immediately. */ if (gfp_temp != gfp_mask) { @@ -358,8 +358,8 @@ repeat_alloc: goto repeat_alloc; } - /* We must not sleep if !__GFP_WAIT */ - if (!(gfp_mask & __GFP_WAIT)) { + /* We must not sleep if !__GFP_DIRECT_RECLAIM */ + if (!(gfp_mask & __GFP_DIRECT_RECLAIM)) { spin_unlock_irqrestore(&pool->lock, flags); return NULL; } diff --git a/mm/migrate.c b/mm/migrate.c index 2834fab..e60379e 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1578,7 +1578,7 @@ static struct page *alloc_misplaced_dst_page(struct page *page, (GFP_HIGHUSER_MOVABLE | __GFP_THISNODE | __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN) & - ~GFP_IOFS, 0); + ~(__GFP_IO | __GFP_FS), 0); return newpage; } diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 6739098..70461f3 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -169,12 +169,12 @@ void pm_restrict_gfp_mask(void) WARN_ON(!mutex_is_locked(&pm_mutex)); WARN_ON(saved_gfp_mask); saved_gfp_mask = gfp_allowed_mask; - gfp_allowed_mask &= ~GFP_IOFS; + gfp_allowed_mask &= ~(__GFP_IO | __GFP_FS); } bool pm_suspended_storage(void) { - if ((gfp_allowed_mask & GFP_IOFS) == GFP_IOFS) + if ((gfp_allowed_mask & (__GFP_IO | __GFP_FS)) == (__GFP_IO | __GFP_FS)) return false; return true; } @@ -2183,7 +2183,7 @@ static bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order) return false; if (fail_page_alloc.ignore_gfp_highmem && (gfp_mask & __GFP_HIGHMEM)) return false; - if (fail_page_alloc.ignore_gfp_wait && (gfp_mask & __GFP_WAIT)) + if (fail_page_alloc.ignore_gfp_wait && (gfp_mask & __GFP_DIRECT_RECLAIM)) return false; return should_fail(&fail_page_alloc.attr, 1 << order); @@ -2685,7 +2685,7 @@ void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...) if (test_thread_flag(TIF_MEMDIE) || (current->flags & (PF_MEMALLOC | PF_EXITING))) filter &= ~SHOW_MEM_FILTER_NODES; - if (in_interrupt() || !(gfp_mask & __GFP_WAIT)) + if (in_interrupt() || !(gfp_mask & __GFP_DIRECT_RECLAIM)) filter &= ~SHOW_MEM_FILTER_NODES; if (fmt) { @@ -2945,7 +2945,6 @@ static inline int gfp_to_alloc_flags(gfp_t gfp_mask) { int alloc_flags = ALLOC_WMARK_MIN | ALLOC_CPUSET; - const bool atomic = !(gfp_mask & (__GFP_WAIT | __GFP_NO_KSWAPD)); /* __GFP_HIGH is assumed to be the same as ALLOC_HIGH to save a branch. */ BUILD_BUG_ON(__GFP_HIGH != (__force gfp_t) ALLOC_HIGH); @@ -2954,11 +2953,11 @@ gfp_to_alloc_flags(gfp_t gfp_mask) * The caller may dip into page reserves a bit more if the caller * cannot run direct reclaim, or if the caller has realtime scheduling * policy or is asking for __GFP_HIGH memory. GFP_ATOMIC requests will - * set both ALLOC_HARDER (atomic == true) and ALLOC_HIGH (__GFP_HIGH). + * set both ALLOC_HARDER (__GFP_ATOMIC) and ALLOC_HIGH (__GFP_HIGH). */ alloc_flags |= (__force int) (gfp_mask & __GFP_HIGH); - if (atomic) { + if (gfp_mask & __GFP_ATOMIC) { /* * Not worth trying to allocate harder for __GFP_NOMEMALLOC even * if it can't schedule. @@ -2995,11 +2994,16 @@ bool gfp_pfmemalloc_allowed(gfp_t gfp_mask) return !!(gfp_to_alloc_flags(gfp_mask) & ALLOC_NO_WATERMARKS); } +static inline bool is_thp_gfp_mask(gfp_t gfp_mask) +{ + return (gfp_mask & (GFP_TRANSHUGE | __GFP_KSWAPD_RECLAIM)) == GFP_TRANSHUGE; +} + static inline struct page * __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, struct alloc_context *ac) { - const gfp_t wait = gfp_mask & __GFP_WAIT; + bool can_direct_reclaim = gfp_mask & __GFP_DIRECT_RECLAIM; struct page *page = NULL; int alloc_flags; unsigned long pages_reclaimed = 0; @@ -3020,15 +3024,23 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order, } /* + * We also sanity check to catch abuse of atomic reserves being used by + * callers that are not in atomic context. + */ + if (WARN_ON_ONCE((gfp_mask & (__GFP_ATOMIC|__GFP_DIRECT_RECLAIM)) == + (__GFP_ATOMIC|__GFP_DIRECT_RECLAIM))) + gfp_mask &= ~__GFP_ATOMIC; + + /* * If this allocation cannot block and it is for a specific node, then * fail early. There's no need to wakeup kswapd or retry for a * speculative node-specific allocation. */ - if (IS_ENABLED(CONFIG_NUMA) && (gfp_mask & __GFP_THISNODE) && !wait) + if (IS_ENABLED(CONFIG_NUMA) && (gfp_mask & __GFP_THISNODE) && !can_direct_reclaim) goto nopage; retry: - if (!(gfp_mask & __GFP_NO_KSWAPD)) + if (gfp_mask & __GFP_KSWAPD_RECLAIM) wake_all_kswapds(order, ac); /* @@ -3071,8 +3083,8 @@ retry: } } - /* Atomic allocations - we can't balance anything */ - if (!wait) { + /* Caller is not willing to reclaim, we can't balance anything */ + if (!can_direct_reclaim) { /* * All existing users of the deprecated __GFP_NOFAIL are * blockable, so warn of any new users that actually allow this @@ -3102,7 +3114,7 @@ retry: goto got_pg; /* Checks for THP-specific high-order allocations */ - if ((gfp_mask & GFP_TRANSHUGE) == GFP_TRANSHUGE) { + if (is_thp_gfp_mask(gfp_mask)) { /* * If compaction is deferred for high-order allocations, it is * because sync compaction recently failed. If this is the case @@ -3137,8 +3149,7 @@ retry: * fault, so use asynchronous memory compaction for THP unless it is * khugepaged trying to collapse. */ - if ((gfp_mask & GFP_TRANSHUGE) != GFP_TRANSHUGE || - (current->flags & PF_KTHREAD)) + if (!is_thp_gfp_mask(gfp_mask) || (current->flags & PF_KTHREAD)) migration_mode = MIGRATE_SYNC_LIGHT; /* Try direct reclaim and then allocating */ @@ -3209,7 +3220,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order, lockdep_trace_alloc(gfp_mask); - might_sleep_if(gfp_mask & __GFP_WAIT); + might_sleep_if(gfp_mask & __GFP_DIRECT_RECLAIM); if (should_fail_alloc_page(gfp_mask, order)) return NULL; @@ -1031,12 +1031,12 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp) } /* - * Construct gfp mask to allocate from a specific node but do not invoke reclaim - * or warn about failures. + * Construct gfp mask to allocate from a specific node but do not direct reclaim + * or warn about failures. kswapd may still wake to reclaim in the background. */ static inline gfp_t gfp_exact_node(gfp_t flags) { - return (flags | __GFP_THISNODE | __GFP_NOWARN) & ~__GFP_WAIT; + return (flags | __GFP_THISNODE | __GFP_NOWARN) & ~__GFP_DIRECT_RECLAIM; } #endif @@ -2633,7 +2633,7 @@ static int cache_grow(struct kmem_cache *cachep, offset *= cachep->colour_off; - if (local_flags & __GFP_WAIT) + if (gfpflags_allow_blocking(local_flags)) local_irq_enable(); /* @@ -2663,7 +2663,7 @@ static int cache_grow(struct kmem_cache *cachep, cache_init_objs(cachep, page); - if (local_flags & __GFP_WAIT) + if (gfpflags_allow_blocking(local_flags)) local_irq_disable(); check_irq_off(); spin_lock(&n->list_lock); @@ -2677,7 +2677,7 @@ static int cache_grow(struct kmem_cache *cachep, opps1: kmem_freepages(cachep, page); failed: - if (local_flags & __GFP_WAIT) + if (gfpflags_allow_blocking(local_flags)) local_irq_disable(); return 0; } @@ -2869,7 +2869,7 @@ force_grow: static inline void cache_alloc_debugcheck_before(struct kmem_cache *cachep, gfp_t flags) { - might_sleep_if(flags & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(flags)); #if DEBUG kmem_flagcheck(cachep, flags); #endif @@ -3057,11 +3057,11 @@ retry: */ struct page *page; - if (local_flags & __GFP_WAIT) + if (gfpflags_allow_blocking(local_flags)) local_irq_enable(); kmem_flagcheck(cache, flags); page = kmem_getpages(cache, local_flags, numa_mem_id()); - if (local_flags & __GFP_WAIT) + if (gfpflags_allow_blocking(local_flags)) local_irq_disable(); if (page) { /* @@ -1265,7 +1265,7 @@ static inline struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s, { flags &= gfp_allowed_mask; lockdep_trace_alloc(flags); - might_sleep_if(flags & __GFP_WAIT); + might_sleep_if(gfpflags_allow_blocking(flags)); if (should_failslab(s->object_size, flags, s->flags)) return NULL; @@ -1353,7 +1353,7 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) flags &= gfp_allowed_mask; - if (flags & __GFP_WAIT) + if (gfpflags_allow_blocking(flags)) local_irq_enable(); flags |= s->allocflags; @@ -1363,8 +1363,8 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) * so we fall-back to the minimum order allocation. */ alloc_gfp = (flags | __GFP_NOWARN | __GFP_NORETRY) & ~__GFP_NOFAIL; - if ((alloc_gfp & __GFP_WAIT) && oo_order(oo) > oo_order(s->min)) - alloc_gfp = (alloc_gfp | __GFP_NOMEMALLOC) & ~__GFP_WAIT; + if ((alloc_gfp & __GFP_DIRECT_RECLAIM) && oo_order(oo) > oo_order(s->min)) + alloc_gfp = (alloc_gfp | __GFP_NOMEMALLOC) & ~__GFP_DIRECT_RECLAIM; page = alloc_slab_page(s, alloc_gfp, node, oo); if (unlikely(!page)) { @@ -1424,7 +1424,7 @@ static struct page *allocate_slab(struct kmem_cache *s, gfp_t flags, int node) page->frozen = 1; out: - if (flags & __GFP_WAIT) + if (gfpflags_allow_blocking(flags)) local_irq_disable(); if (!page) return NULL; diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 9db9ef5..7ee94dc 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1617,7 +1617,7 @@ static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, goto fail; } area->pages[i] = page; - if (gfp_mask & __GFP_WAIT) + if (gfpflags_allow_blocking(gfp_mask)) cond_resched(); } diff --git a/mm/vmscan.c b/mm/vmscan.c index e0cd7ee..2aec424 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1476,7 +1476,7 @@ static int too_many_isolated(struct zone *zone, int file, * won't get blocked by normal direct-reclaimers, forming a circular * deadlock. */ - if ((sc->gfp_mask & GFP_IOFS) == GFP_IOFS) + if ((sc->gfp_mask & (__GFP_IO | __GFP_FS)) == (__GFP_IO | __GFP_FS)) inactive >>= 3; return isolated > inactive; @@ -3791,7 +3791,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order) /* * Do not scan if the allocation should not be delayed. */ - if (!(gfp_mask & __GFP_WAIT) || (current->flags & PF_MEMALLOC)) + if (!gfpflags_allow_blocking(gfp_mask) || (current->flags & PF_MEMALLOC)) return ZONE_RECLAIM_NOSCAN; /* @@ -571,7 +571,7 @@ static struct zswap_pool *zswap_pool_find_get(char *type, char *compressor) static struct zswap_pool *zswap_pool_create(char *type, char *compressor) { struct zswap_pool *pool; - gfp_t gfp = __GFP_NORETRY | __GFP_NOWARN; + gfp_t gfp = __GFP_NORETRY | __GFP_NOWARN | __GFP_KSWAPD_RECLAIM; pool = kzalloc(sizeof(*pool), GFP_KERNEL); if (!pool) { @@ -1011,7 +1011,8 @@ static int zswap_frontswap_store(unsigned type, pgoff_t offset, /* store */ len = dlen + sizeof(struct zswap_header); ret = zpool_malloc(entry->pool->zpool, len, - __GFP_NORETRY | __GFP_NOWARN, &handle); + __GFP_NORETRY | __GFP_NOWARN | __GFP_KSWAPD_RECLAIM, + &handle); if (ret == -ENOSPC) { zswap_reject_compress_poor++; goto put_dstmem; diff --git a/net/core/skbuff.c b/net/core/skbuff.c index fab4599..aa41e6d 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -414,7 +414,7 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev, unsigned int len, len += NET_SKB_PAD; if ((len > SKB_WITH_OVERHEAD(PAGE_SIZE)) || - (gfp_mask & (__GFP_WAIT | GFP_DMA))) { + (gfp_mask & (__GFP_DIRECT_RECLAIM | GFP_DMA))) { skb = __alloc_skb(len, gfp_mask, SKB_ALLOC_RX, NUMA_NO_NODE); if (!skb) goto skb_fail; @@ -481,7 +481,7 @@ struct sk_buff *__napi_alloc_skb(struct napi_struct *napi, unsigned int len, len += NET_SKB_PAD + NET_IP_ALIGN; if ((len > SKB_WITH_OVERHEAD(PAGE_SIZE)) || - (gfp_mask & (__GFP_WAIT | GFP_DMA))) { + (gfp_mask & (__GFP_DIRECT_RECLAIM | GFP_DMA))) { skb = __alloc_skb(len, gfp_mask, SKB_ALLOC_RX, NUMA_NO_NODE); if (!skb) goto skb_fail; @@ -4452,7 +4452,7 @@ struct sk_buff *alloc_skb_with_frags(unsigned long header_len, return NULL; gfp_head = gfp_mask; - if (gfp_head & __GFP_WAIT) + if (gfp_head & __GFP_DIRECT_RECLAIM) gfp_head |= __GFP_REPEAT; *errcode = -ENOBUFS; @@ -4467,7 +4467,7 @@ struct sk_buff *alloc_skb_with_frags(unsigned long header_len, while (order) { if (npages >= 1 << order) { - page = alloc_pages((gfp_mask & ~__GFP_WAIT) | + page = alloc_pages((gfp_mask & ~__GFP_DIRECT_RECLAIM) | __GFP_COMP | __GFP_NOWARN | __GFP_NORETRY, diff --git a/net/core/sock.c b/net/core/sock.c index 7529eb9..1e4dd54 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -1944,8 +1944,10 @@ bool skb_page_frag_refill(unsigned int sz, struct page_frag *pfrag, gfp_t gfp) pfrag->offset = 0; if (SKB_FRAG_PAGE_ORDER) { - pfrag->page = alloc_pages((gfp & ~__GFP_WAIT) | __GFP_COMP | - __GFP_NOWARN | __GFP_NORETRY, + /* Avoid direct reclaim but allow kswapd to wake */ + pfrag->page = alloc_pages((gfp & ~__GFP_DIRECT_RECLAIM) | + __GFP_COMP | __GFP_NOWARN | + __GFP_NORETRY, SKB_FRAG_PAGE_ORDER); if (likely(pfrag->page)) { pfrag->size = PAGE_SIZE << SKB_FRAG_PAGE_ORDER; diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index fafe33b..59651af 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -2116,7 +2116,7 @@ int netlink_broadcast_filtered(struct sock *ssk, struct sk_buff *skb, u32 portid consume_skb(info.skb2); if (info.delivered) { - if (info.congested && (allocation & __GFP_WAIT)) + if (info.congested && gfpflags_allow_blocking(allocation)) yield(); return 0; } diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c index 96744b7..977fb86 100644 --- a/net/rds/ib_recv.c +++ b/net/rds/ib_recv.c @@ -305,7 +305,7 @@ static int rds_ib_recv_refill_one(struct rds_connection *conn, gfp_t slab_mask = GFP_NOWAIT; gfp_t page_mask = GFP_NOWAIT; - if (gfp & __GFP_WAIT) { + if (gfp & __GFP_DIRECT_RECLAIM) { slab_mask = GFP_KERNEL; page_mask = GFP_HIGHUSER; } @@ -379,7 +379,7 @@ void rds_ib_recv_refill(struct rds_connection *conn, int prefill, gfp_t gfp) struct ib_recv_wr *failed_wr; unsigned int posted = 0; int ret = 0; - bool can_wait = !!(gfp & __GFP_WAIT); + bool can_wait = !!(gfp & __GFP_DIRECT_RECLAIM); u32 pos; /* the goal here is to just make sure that someone, somewhere diff --git a/net/rxrpc/ar-connection.c b/net/rxrpc/ar-connection.c index 692b3e6..6c71ed1 100644 --- a/net/rxrpc/ar-connection.c +++ b/net/rxrpc/ar-connection.c @@ -500,7 +500,7 @@ int rxrpc_connect_call(struct rxrpc_sock *rx, if (bundle->num_conns >= 20) { _debug("too many conns"); - if (!(gfp & __GFP_WAIT)) { + if (!gfpflags_allow_blocking(gfp)) { _leave(" = -EAGAIN"); return -EAGAIN; } diff --git a/net/sctp/associola.c b/net/sctp/associola.c index b00f1f9..559afd0 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -1590,7 +1590,7 @@ int sctp_assoc_lookup_laddr(struct sctp_association *asoc, /* Set an association id for a given association */ int sctp_assoc_set_id(struct sctp_association *asoc, gfp_t gfp) { - bool preload = !!(gfp & __GFP_WAIT); + bool preload = gfpflags_allow_blocking(gfp); int ret; /* If the id is already assigned, keep it. */ |
