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由 Mel Gorman 提交于
Commit 5a6fe125 brought hugetlbfs more in line with the core VM by obeying VM_NORESERVE and not reserving hugepages for both shared and private mappings when [SHM|MAP]_NORESERVE are specified. However, it is still taking filesystem quota unconditionally. At fault time, if there are no reserves and attempt is made to allocate the page and account for filesystem quota. If either fail, the fault fails. The impact is that quota is getting accounted for twice. This patch partially reverts 5a6fe125. To help prevent this mistake happening again, it improves the documentation of hugetlb_reserve_pages() Reported-by: NAndy Whitcroft <apw@canonical.com> Signed-off-by: NMel Gorman <mel@csn.ul.ie> Acked-by: NAndy Whitcroft <apw@canonical.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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