From: Changbin Du changbin.du@gmail.com
stable inclusion from stable-5.10.72 commit 352b02562a3e01a640bf7d242ebf61003cf93c59 bugzilla: 182982 https://gitee.com/openeuler/kernel/issues/I4I3L1
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit ebaeab2fe87987cef28eb5ab174c42cd28594387 ]
Idle page tracking can also be used for process address space, not only file mappings.
Without this change, using with '-i' option for process address space encounters below errors reported.
$ sudo ./page-types -p $(pidof bash) -i mark page idle: Bad file descriptor mark page idle: Bad file descriptor mark page idle: Bad file descriptor mark page idle: Bad file descriptor ...
Link: https://lkml.kernel.org/r/20210917032826.10669-1-changbin.du@gmail.com Signed-off-by: Changbin Du changbin.du@gmail.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com
Signed-off-by: Chen Jun chenjun102@huawei.com --- tools/vm/page-types.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c index 0517c744b04e..f62f10c988db 100644 --- a/tools/vm/page-types.c +++ b/tools/vm/page-types.c @@ -1331,7 +1331,7 @@ int main(int argc, char *argv[]) if (opt_list && opt_list_mapcnt) kpagecount_fd = checked_open(PROC_KPAGECOUNT, O_RDONLY);
- if (opt_mark_idle && opt_file) + if (opt_mark_idle) page_idle_fd = checked_open(SYS_KERNEL_MM_PAGE_IDLE, O_RDWR);
if (opt_list && opt_pid)