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mmap: Change zeroing of maple tree in __vma_adjust
authorLiam R. Howlett <Liam.Howlett@oracle.com>
Mon, 6 Sep 2021 03:31:15 +0000 (23:31 -0400)
committerLiam R. Howlett <Liam.Howlett@oracle.com>
Fri, 22 Oct 2021 00:27:27 +0000 (20:27 -0400)
commit20f8655113cb55cfbbdada7150c7c7bc52173064
treeb20e10b280599a529bb6ef23646adfd3dc0d686ftree
parenteed93e1b064c518fdc7c161d2ef03f07a596fbe1commit | diff
mmap: Change zeroing of maple tree in __vma_adjust

Only write to the maple tree if we are not inserting or the insert isn't
going to overwrite the area to clear.  This avoids spanning writes and
node coealescing when unnecessary.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
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