The patch below does not apply to the 5.13-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 0bea96f59ba40e63c0ae93ad6a02417b95f22f4d Mon Sep 17 00:00:00 2001
From: Pavel Begunkov asml.silence@gmail.com Date: Fri, 20 Aug 2021 10:36:36 +0100 Subject: [PATCH] io_uring: place fixed tables under memcg limits
Fixed tables may be large enough, place all of them together with allocated tags under memcg limits.
Cc: stable@vger.kernel.org Signed-off-by: Pavel Begunkov asml.silence@gmail.com Link: https://lore.kernel.org/r/b3ac9f5da9821bb59837b5fe25e8ef4be982218c.162945168... Signed-off-by: Jens Axboe axboe@kernel.dk
diff --git a/fs/io_uring.c b/fs/io_uring.c index 9a021fe6c461..c6f1afa5ec04 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -7138,14 +7138,14 @@ static void **io_alloc_page_table(size_t size) size_t init_size = size; void **table;
- table = kcalloc(nr_tables, sizeof(*table), GFP_KERNEL); + table = kcalloc(nr_tables, sizeof(*table), GFP_KERNEL_ACCOUNT); if (!table) return NULL;
for (i = 0; i < nr_tables; i++) { unsigned int this_size = min_t(size_t, size, PAGE_SIZE);
- table[i] = kzalloc(this_size, GFP_KERNEL); + table[i] = kzalloc(this_size, GFP_KERNEL_ACCOUNT); if (!table[i]) { io_free_page_table(table, init_size); return NULL; @@ -7336,7 +7336,8 @@ static int io_rsrc_data_alloc(struct io_ring_ctx *ctx, rsrc_put_fn *do_put,
static bool io_alloc_file_tables(struct io_file_table *table, unsigned nr_files) { - table->files = kvcalloc(nr_files, sizeof(table->files[0]), GFP_KERNEL); + table->files = kvcalloc(nr_files, sizeof(table->files[0]), + GFP_KERNEL_ACCOUNT); return !!table->files; }