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dax: Allow dax_iomap_fault() to return pfn

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For synchronous page fault dax_iomap_fault() will need to return PFN
which will then need to be inserted into page tables after fsync()
completes. Add necessary parameter to dax_iomap_fault().

Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Ross Zwisler <[email protected]>
Signed-off-by: Jan Kara <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
This commit is contained in:
Jan Kara 2017-11-01 16:36:39 +01:00 • committed by Dan Williams
commit 9a0dd42251
5 changed files with 12 additions and 11 deletions
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2
fs/ext2/file.c
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@ -99,7 +99,7 @@ static int ext2_dax_fault(struct vm_fault *vmf)
}
down_read(&ei->dax_sem);
ret = dax_iomap_fault(vmf, PE_SIZE_PTE, &ext2_iomap_ops);
ret = dax_iomap_fault(vmf, PE_SIZE_PTE, NULL, &ext2_iomap_ops);
up_read(&ei->dax_sem);
if (vmf->flags & FAULT_FLAG_WRITE)