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| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2018-04-10 21:17:54 +0800 |
|---|---|---|
| committer | Jon Mason <jdmason@kudzu.us> | 2018-06-11 15:20:59 -0400 |
| commit | c9160b69258ef46ab62c27a09decb8fef311e700 (patch) | |
| tree | 63e07b5afa240a6bd9201760cfa88fd3734bff25 /drivers/ntb | |
| parent | 82edcc758f273ed3afd308746dd69376d5b1024d (diff) | |
| download | linux-c9160b69258ef46ab62c27a09decb8fef311e700.tar.bz2 | |
ntb: ntb_transport: Replace GFP_ATOMIC with GFP_KERNEL in ntb_transport_create_queue
ntb_transport_create_queue() is never called in atomic context.
ntb_transport_create_queue() is only called by ntb_netdev_probe(),
which is set as ".probe" in struct ntb_transport_client.
Despite never getting called from atomic context,
ntb_transport_create_queue() calls kzalloc_node() with GFP_ATOMIC,
which does not sleep for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
which can sleep and improve the possibility of sucessful allocation.
This is found by a static analysis tool named DCNS written by myself.
And I also manually check it
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/ntb_transport.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/ntb/ntb_transport.c b/drivers/ntb/ntb_transport.c index c848fb3d5099..8145be34328b 100644 --- a/drivers/ntb/ntb_transport.c +++ b/drivers/ntb/ntb_transport.c @@ -1828,7 +1828,7 @@ ntb_transport_create_queue(void *data, struct device *client_dev, qp->rx_dma_chan ? "DMA" : "CPU"); for (i = 0; i < NTB_QP_DEF_NUM_ENTRIES; i++) { - entry = kzalloc_node(sizeof(*entry), GFP_ATOMIC, node); + entry = kzalloc_node(sizeof(*entry), GFP_KERNEL, node); if (!entry) goto err1; @@ -1839,7 +1839,7 @@ ntb_transport_create_queue(void *data, struct device *client_dev, qp->rx_alloc_entry = NTB_QP_DEF_NUM_ENTRIES; for (i = 0; i < qp->tx_max_entry; i++) { - entry = kzalloc_node(sizeof(*entry), GFP_ATOMIC, node); + entry = kzalloc_node(sizeof(*entry), GFP_KERNEL, node); if (!entry) goto err2; |