+ tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking.patch added to -mm tree

+ tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking.patch added to -mm tree

[akpm]

The patch titled
     Subject: tools/vm/page-types: remove dependency on opt_file for idle page tracking
has been added to the -mm tree.  Its filename is
     tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking.patch

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------------------------------------------------------
From: Changbin Du <changbin.du@gmail.com>
Subject: tools/vm/page-types: remove dependency on opt_file for idle page tracking

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
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>
---

 tools/vm/page-types.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/vm/page-types.c~tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking
+++ a/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)
_

Patches currently in -mm which might be from changbin.du@gmail.com are

tools-vm-page-types-remove-dependency-on-opt_file-for-idle-page-tracking.patch