Messages in this thread Patch in this message | | | Date | Sat, 10 Mar 2018 01:31:20 +0300 | From | Alexey Dobriyan <> | Subject | [PATCH] proc: do mmput ASAP for /proc/*/map_files |
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mm_struct not needed while printing as all the data was already extracted.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> ---
fs/proc/base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2214,6 +2214,7 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) } } up_read(&mm->mmap_sem); + mmput(mm); for (i = 0; i < nr_files; i++) { char buf[4 * sizeof(long) + 2]; /* max: %lx-%lx\0 */ @@ -2231,7 +2232,6 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) } if (fa) flex_array_free(fa); - mmput(mm); out_put_task: put_task_struct(task);
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