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Commit d9d0674c authored by Artemy Kovalyov's avatar Artemy Kovalyov Committed by Doug Ledford
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IB/umem: Indicate that process is being terminated 



When process is killed while pagefault operation still in progress -
function will fail. In this specific case we don't want any warnings in
dmesg to avoid log analyzers false alerts. So we need distinct error
code for this case.

Signed-off-by: default avatarArtemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent d07d1d70

drivers/infiniband/core/umem_odp.c

+3 −2
Original line number Diff line number Diff line
@@ -573,7 +573,8 @@ static int ib_umem_odp_map_dma_single_page( 
 * for failure.

 * An -EAGAIN error code is returned when a concurrent mmu notifier prevents

 * the function from completing its task.

 *

 * An -ENOENT error code indicates that userspace process is being terminated

 * and mm was already destroyed.

 * @umem: the umem to map and pin

 * @user_virt: the address from which we need to map.

 * @bcnt: the minimal number of bytes to pin and map. The mapping might be
@@ -621,7 +622,7 @@ int ib_umem_odp_map_dma_pages(struct ib_umem *umem, u64 user_virt, u64 bcnt, 


	owning_mm = get_task_mm(owning_process);

	if (owning_mm == NULL) {

		ret = -EINVAL;

		ret = -ENOENT;

		goto out_put_task;

	}