mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 18:25:51 +07:00
RDMA/odp: Fix missed unlock in non-blocking invalidate_start
If invalidate_start returns with EAGAIN then the umem_rwsem needs to be
unlocked as no invalidate_end will be called.
Cc: <stable@vger.kernel.org>
Fixes: ca748c39ea
("RDMA/umem: Get rid of per_mm->notifier_count")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
parent
5a3113d19c
commit
7608bf40cf
@ -149,6 +149,7 @@ static int ib_umem_notifier_invalidate_range_start(struct mmu_notifier *mn,
|
||||
{
|
||||
struct ib_ucontext_per_mm *per_mm =
|
||||
container_of(mn, struct ib_ucontext_per_mm, mn);
|
||||
int rc;
|
||||
|
||||
if (mmu_notifier_range_blockable(range))
|
||||
down_read(&per_mm->umem_rwsem);
|
||||
@ -165,11 +166,14 @@ static int ib_umem_notifier_invalidate_range_start(struct mmu_notifier *mn,
|
||||
return 0;
|
||||
}
|
||||
|
||||
return rbt_ib_umem_for_each_in_range(&per_mm->umem_tree, range->start,
|
||||
range->end,
|
||||
invalidate_range_start_trampoline,
|
||||
mmu_notifier_range_blockable(range),
|
||||
NULL);
|
||||
rc = rbt_ib_umem_for_each_in_range(&per_mm->umem_tree, range->start,
|
||||
range->end,
|
||||
invalidate_range_start_trampoline,
|
||||
mmu_notifier_range_blockable(range),
|
||||
NULL);
|
||||
if (rc)
|
||||
up_read(&per_mm->umem_rwsem);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int invalidate_range_end_trampoline(struct ib_umem_odp *item, u64 start,
|
||||
|
Loading…
Reference in New Issue
Block a user