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dax: Implement dax_finish_sync_fault()

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Implement a function that filesystems can call to finish handling of
synchronous page faults. It takes care of syncing appropriare file range
and insertion of page table entry.

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Jan Kara
2017-11-01 16:36:43 +01:00
committed by Dan Williams
parent caa51d26f8
commit 71eab6dfd9
3 changed files with 87 additions and 0 deletions
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2
include/trace/events/fs_dax.h
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@@ -190,6 +190,8 @@ DEFINE_EVENT(dax_pte_fault_class, name, \
DEFINE_PTE_FAULT_EVENT(dax_pte_fault);
DEFINE_PTE_FAULT_EVENT(dax_pte_fault_done);
DEFINE_PTE_FAULT_EVENT(dax_load_hole);
DEFINE_PTE_FAULT_EVENT(dax_insert_pfn_mkwrite_no_entry);
DEFINE_PTE_FAULT_EVENT(dax_insert_pfn_mkwrite);
TRACE_EVENT(dax_insert_mapping,
TP_PROTO(struct inode *inode, struct vm_fault *vmf, void *radix_entry),