The patch titled
Subject: proc-report-open-files-as-size-in-stat-for-proc-pid-fd-v3
has been added to the -mm mm-nonmm-unstable branch. Its filename is
proc-report-open-files-as-size-in-stat-for-proc-pid-fd-v3.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/proc-report-open-files-as-size-in-stat-for-proc-pid-fd-v3.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Ivan Babrou <ivan@xxxxxxxxxxxxxx>
Subject: proc-report-open-files-as-size-in-stat-for-proc-pid-fd-v3
Date: Mon, 17 Oct 2022 21:58:44 -0700
use bitmap_weight() to count the bits
Link: https://lkml.kernel.org/r/20221018045844.37697-1-ivan@xxxxxxxxxxxxxx
Signed-off-by: Ivan Babrou <ivan@xxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/fd.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
--- a/fs/proc/fd.c~proc-report-open-files-as-size-in-stat-for-proc-pid-fd-v3
+++ a/fs/proc/fd.c
@@ -283,7 +283,7 @@ static int proc_readfd_count(struct inod
{
struct task_struct *p = get_proc_task(inode);
struct fdtable *fdt;
- unsigned int i, size, open_fds = 0;
+ unsigned int open_fds = 0;
if (!p)
return -ENOENT;
@@ -293,10 +293,7 @@ static int proc_readfd_count(struct inod
rcu_read_lock();
fdt = files_fdtable(p->files);
- size = fdt->max_fds;
-
- for (i = size / BITS_PER_LONG; i > 0;)
- open_fds += hweight64(fdt->open_fds[--i]);
+ open_fds = bitmap_weight(fdt->open_fds, fdt->max_fds);
rcu_read_unlock();
}
_
Patches currently in -mm which might be from ivan@xxxxxxxxxxxxxx are
proc-report-open-files-as-size-in-stat-for-proc-pid-fd.patch
proc-report-open-files-as-size-in-stat-for-proc-pid-fd-v3.patch
