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Code Issues Releases Wiki Activity

drm/amdkfd: Fix recursive lock warnings 

memalloc_nofs_save/restore are no longer sufficient to prevent recursive
lock warnings when holding locks that can be taken in MMU notifiers. Use
memalloc_noreclaim_save/restore instead.

Fixes: f920e413ff ("mm: track mmu notifiers in fs_reclaim_acquire/release")
CC: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 5.10.x
This commit is contained in:
Felix Kuehling 2021-02-04 00:11:17 -05:00 committed by Alex Deucher
parent 41401ac677
commit 1fb8b1fc4d
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h
View File

@ -243,11 +243,11 @@ get_sh_mem_bases_nybble_64(struct kfd_process_device *pdd)
static inline void dqm_lock(struct device_queue_manager *dqm)
{
mutex_lock(&dqm->lock_hidden);
dqm->saved_flags = memalloc_nofs_save();
dqm->saved_flags = memalloc_noreclaim_save();
}
static inline void dqm_unlock(struct device_queue_manager *dqm)
{
memalloc_nofs_restore(dqm->saved_flags);
memalloc_noreclaim_restore(dqm->saved_flags);
mutex_unlock(&dqm->lock_hidden);
}