PCI/P2PDMA: Finish RCU conversion of pdev->p2pdma

While looking at pci_alloc_p2pmem() I found RCU protection was not properly
applied there, as pdev->p2pdma was potentially read multiple times.

Fix pci_alloc_p2pmem(), add __rcu qualifier to p2pdma field of struct
pci_dev, and fix all other accesses to this field with proper RCU verbs.

Link: https://lore.kernel.org/r/[email protected]
Fixes: 1570175abd16 ("PCI/P2PDMA: track pgmap references per resource, not globally")
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Logan Gunthorpe <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Ira Weiny <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "Jérôme Glisse" <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>

0 files changed, 0 insertions, 0 deletions