Messages in this thread Patch in this message | | | From | "Alex Xu (Hello71)" <> | Subject | [PATCH] mm/smaps_rollup: return empty file for kthreads instead of ESRCH | Date | Wed, 13 Apr 2022 17:13:57 -0400 |
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This restores the behavior prior to 258f669e7e88 ("mm: /proc/pid/smaps_rollup: convert to single value seq_file"), making it once again consistent with maps and smaps, and allowing patterns like awk '$1=="Anonymous:"{x+=$2}END{print x}' /proc/*/smaps_rollup to work. Searching all Debian packages for "smaps_rollup" did not find any programs which would be affected by this change.
Fixes: 258f669e7e88 ("mm: /proc/pid/smaps_rollup: convert to single value seq_file")
Signed-off-by: Alex Xu (Hello71) <alex_y_xu@yahoo.ca> --- fs/proc/task_mmu.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index f46060eb91b5..d7de4584a271 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -883,10 +883,8 @@ static int show_smaps_rollup(struct seq_file *m, void *v) return -ESRCH; mm = priv->mm; - if (!mm || !mmget_not_zero(mm)) { - ret = -ESRCH; + if (!mm || !mmget_not_zero(mm)) goto out_put_task; - } memset(&mss, 0, sizeof(mss)); -- 2.35.2
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