From: Alexey Dobriyan <adobriyan@xxxxxxxxx> Subject: proc: do mmput ASAP for /proc/*/map_files mm_struct is not needed while printing as all the data was already extracted. Link: http://lkml.kernel.org/r/20180309223120.GC3843@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/proc/base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN fs/proc/base.c~proc-do-mmput-asap-for-proc-map_files fs/proc/base.c --- a/fs/proc/base.c~proc-do-mmput-asap-for-proc-map_files +++ a/fs/proc/base.c @@ -2211,6 +2211,7 @@ proc_map_files_readdir(struct file *file } } up_read(&mm->mmap_sem); + mmput(mm); for (i = 0; i < nr_files; i++) { char buf[4 * sizeof(long) + 2]; /* max: %lx-%lx\0 */ @@ -2228,7 +2229,6 @@ proc_map_files_readdir(struct file *file } if (fa) flex_array_free(fa); - mmput(mm); out_put_task: put_task_struct(task); _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
