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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>
Sat, 30 Oct 2021 03:37:29 +0000 (23:37 -0400)
commit2876d6e06ecbcf6cc096d514f78bdd0392b355d2
tree5d441170d5955f7708ee3efc3d68e89faa631188tree
parentc027171684240482f14119cd8d855ae0cdc7ecfbcommit | 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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