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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)
committerMatthew Wilcox (Oracle) <willy@infradead.org>
Wed, 20 Oct 2021 20:00:32 +0000 (16:00 -0400)
commit72346ccfed334160a40dbc7d106019c741d4a0b4
treecb0ef284a0b1713d24cc777d713cad290622961ftree
parentcdbae2326ce733dcab634049338bd5f22e831668commit | 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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