Revision e700898fa075c69b3ae02b702ab57fb75e1a82ec authored by Mike Kravetz on 12 December 2022, 23:50:41 UTC, committed by Andrew Morton on 21 December 2022, 22:31:52 UTC
Commit bbff39cc6cbc ("hugetlb: allocate vma lock for all sharable vmas") removed the pmd sharable checks in the vma lock helper routines. However, it left the functional version of helper routines behind #ifdef CONFIG_ARCH_WANT_HUGE_PMD_SHARE. Therefore, the vma lock is not being used for sharable vmas on architectures that do not support pmd sharing. On these architectures, a potential fault/truncation race is exposed that could leave pages in a hugetlb file past i_size until the file is removed. Move the functional vma lock helpers outside the ifdef, and remove the non-functional stubs. Since the vma lock is not just for pmd sharing, rename the routine __vma_shareable_flags_pmd. Link: https://lkml.kernel.org/r/20221212235042.178355-1-mike.kravetz@oracle.com Fixes: bbff39cc6cbc ("hugetlb: allocate vma lock for all sharable vmas") Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: David Hildenbrand <david@redhat.com> Cc: James Houghton <jthoughton@google.com> Cc: Mina Almasry <almasrymina@google.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev> Cc: Peter Xu <peterx@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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File | Mode | Size |
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Kconfig | -rw-r--r-- | 13.4 KB |
Makefile | -rw-r--r-- | 1.7 KB |
ath3k.c | -rw-r--r-- | 14.9 KB |
bcm203x.c | -rw-r--r-- | 6.0 KB |
bfusb.c | -rw-r--r-- | 14.9 KB |
bluecard_cs.c | -rw-r--r-- | 19.7 KB |
bpa10x.c | -rw-r--r-- | 8.8 KB |
bt3c_cs.c | -rw-r--r-- | 14.7 KB |
btbcm.c | -rw-r--r-- | 17.6 KB |
btbcm.h | -rw-r--r-- | 2.5 KB |
btintel.c | -rw-r--r-- | 68.8 KB |
btintel.h | -rw-r--r-- | 7.2 KB |
btmrvl_debugfs.c | -rw-r--r-- | 4.7 KB |
btmrvl_drv.h | -rw-r--r-- | 4.2 KB |
btmrvl_main.c | -rw-r--r-- | 17.5 KB |
btmrvl_sdio.c | -rw-r--r-- | 40.8 KB |
btmrvl_sdio.h | -rw-r--r-- | 2.6 KB |
btmtk.c | -rw-r--r-- | 6.6 KB |
btmtk.h | -rw-r--r-- | 2.9 KB |
btmtksdio.c | -rw-r--r-- | 35.2 KB |
btmtkuart.c | -rw-r--r-- | 23.9 KB |
btqca.c | -rw-r--r-- | 17.9 KB |
btqca.h | -rw-r--r-- | 4.7 KB |
btqcomsmd.c | -rw-r--r-- | 4.5 KB |
btrsi.c | -rw-r--r-- | 4.5 KB |
btrtl.c | -rw-r--r-- | 24.4 KB |
btrtl.h | -rw-r--r-- | 3.0 KB |
btsdio.c | -rw-r--r-- | 7.8 KB |
btusb.c | -rw-r--r-- | 118.8 KB |
dtl1_cs.c | -rw-r--r-- | 12.4 KB |
h4_recv.h | -rw-r--r-- | 2.9 KB |
hci_ag6xx.c | -rw-r--r-- | 7.1 KB |
hci_ath.c | -rw-r--r-- | 5.3 KB |
hci_bcm.c | -rw-r--r-- | 38.2 KB |
hci_bcm4377.c | -rw-r--r-- | 71.4 KB |
hci_bcsp.c | -rw-r--r-- | 18.2 KB |
hci_h4.c | -rw-r--r-- | 5.4 KB |
hci_h5.c | -rw-r--r-- | 25.5 KB |
hci_intel.c | -rw-r--r-- | 29.6 KB |
hci_ldisc.c | -rw-r--r-- | 19.8 KB |
hci_ll.c | -rw-r--r-- | 19.3 KB |
hci_mrvl.c | -rw-r--r-- | 9.4 KB |
hci_nokia.c | -rw-r--r-- | 18.0 KB |
hci_qca.c | -rw-r--r-- | 60.6 KB |
hci_serdev.c | -rw-r--r-- | 9.3 KB |
hci_uart.h | -rw-r--r-- | 4.8 KB |
hci_vhci.c | -rw-r--r-- | 12.2 KB |
virtio_bt.c | -rw-r--r-- | 8.8 KB |
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