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vfio: Change vfio_group->group_rwsem to a mutex
authorJason Gunthorpe <[email protected]>
Thu, 29 Sep 2022 14:59:25 +0000 (11:59 -0300)
committerAlex Williamson <[email protected]>
Tue, 4 Oct 2022 18:06:58 +0000 (12:06 -0600)
commitc82e81ab2569559ad873b3061217c2f37560682b
tree3cdb8747c5bbe641a1f0811aaa403dbc7364ff28tree | snapshot
parent912b74d26c7df2da1e261f3dac8942c8cbb76a49commit | diff
vfio: Change vfio_group->group_rwsem to a mutex

These days not much is using the read side:
 - device first open
 - ioctl_get_status
 - device FD release
 - check enforced_coherent

None of this is performance, so just make it into a normal mutex.

Signed-off-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alex Williamson <[email protected]>
drivers/vfio/container.c diff | blob | blame | history
drivers/vfio/vfio.h diff | blob | blame | history
drivers/vfio/vfio_main.c diff | blob | blame | history
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