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mm: join struct fault_env and vm_fault

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Currently we have two different structures for passing fault information
around - struct vm_fault and struct fault_env.  DAX will need more
information in struct vm_fault to handle its faults so the content of
that structure would become event closer to fault_env.  Furthermore it
would need to generate struct fault_env to be able to call some of the
generic functions.  So at this point I don't think there's much use in
keeping these two structures separate.  Just embed into struct vm_fault
all that is needed to use it for both purposes.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jan Kara <[email protected]>
Acked-by: Kirill A. Shutemov <[email protected]>
Cc: Ross Zwisler <[email protected]>
Cc: Dan Williams <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jan Kara 2016-12-14 15:06:58 -08:00 • committed by Linus Torvalds
commit 82b0f8c39a
11 changed files with 423 additions and 422 deletions
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2
Documentation/filesystems/Locking
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@ -556,7 +556,7 @@ till "end_pgoff". ->map_pages() is called with page table locked and must
not block. If it's not possible to reach a page without blocking,
filesystem should skip it. Filesystem should use do_set_pte() to setup
page table entry. Pointer to entry associated with the page is passed in
"pte" field in fault_env structure. Pointers to entries for other offsets
"pte" field in vm_fault structure. Pointers to entries for other offsets
should be calculated relative to "pte".
->page_mkwrite() is called when a previously read-only pte is