Zach Brown 005cf99f42 scoutfs: use vmalloc for high order xattr allocs ...

The xattr item stream is constructred from a large contiguous region
that contains the struct header, the key, and the value.  The value
can be larger than a page so kmalloc is likely to fail as the system
gets fragmented.

Our recent move to the item cache added a significant source of page
allocation churn which moved the system towards fragmentation much more
quickly and was causing high-order allocation failures in testing.

Signed-off-by: Zach Brown <zab@versity.com>

2020-10-26 15:19:03 -07:00

kmod

scoutfs: use vmalloc for high order xattr allocs

2020-10-26 15:19:03 -07:00

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