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Fix HugeTlbController::limit_in_bytes() for v2

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With Cgroups v2, the file to use is "max", not "limit_in_bytes".

Fixes #112

Signed-off-by: Greg Kurz <groug@kaod.org>
This commit is contained in:
Greg Kurz
2023-03-10 07:32:08 +01:00
parent 0348f0a95e
commit 93a59571e3
1 changed files with 5 additions and 2 deletions
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7
src/hugetlb.rs
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@@ -138,8 +138,11 @@ impl HugeTlbController {
/// Get the limit (in bytes) of how much memory can be backed by hugepages of a certain size
/// (`hugetlb_size`).
pub fn limit_in_bytes(&self, hugetlb_size: &str) -> Result<u64> {
self.open_path(&format!("hugetlb.{}.limit_in_bytes", hugetlb_size), false)
.and_then(read_u64_from)
let mut file_name = format!("hugetlb.{}.limit_in_bytes", hugetlb_size);
if self.v2 {
file_name = format!("hugetlb.{}.max", hugetlb_size);
}
self.open_path(&file_name, false).and_then(read_u64_from)
}
/// Get the current usage of memory that is backed by hugepages of a certain size