mm/vmalloc: add adjust_search_size parameter

Extend the find_vmap_lowest_match() function with one more parameter.
It is "adjust_search_size" boolean variable, so it is possible to
control an accuracy of search block if a specific alignment is required.

With this patch, a search size is always adjusted, to serve a request as
fast as possible because of performance reason.

But there is one exception though, it is short ranges where requested
size corresponds to passed vstart/vend restriction together with a
specific alignment request.  In such scenario an adjustment wold not
lead to success allocation.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Uladzislau Rezki <[email protected]>
Signed-off-by: Uladzislau Rezki (Sony) <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Oleksiy Avramchenko <[email protected]>
Cc: Vasily Averin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions