mainline inclusion
from mainline-5.13-rc1
commit d70bec8c
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I3ZGKZ
CVE: NA

-------------------------------------------------

There are several reasons why a vmalloc can fail, virtual space exhausted,
page array allocation failure, page allocation failure, and kernel page
table allocation failure.

Add distinct warning messages for the main causes of failure, with some
added information like page order or allocation size where applicable.

[urezki@gmail.com: print correct vmalloc allocation size]
  Link: https://lkml.kernel.org/r/20210329193214.GA28602@pc638.lan

Link: https://lkml.kernel.org/r/20210322021806.892164-6-npiggin@gmail.comSigned-off-by: NNicholas Piggin <npiggin@gmail.com>
Signed-off-by: NUladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Cc: Cédric Le Goater <clg@kaod.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: NChen Wandun <chenwandun@huawei.com>
Reviewed-by: NTong Tiangen <tongtiangen@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>