linux-kernel - [PATCH 5.13 051/380] io_uring: place fixed tables under memcg limits

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Message-Id: <20210916155805.717753236@linuxfoundation.org>
Date:   Thu, 16 Sep 2021 17:56:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Pavel Begunkov <asml.silence@...il.com>,
        Jens Axboe <axboe@...nel.dk>
Subject: [PATCH 5.13 051/380] io_uring: place fixed tables under memcg limits

From: Pavel Begunkov <asml.silence@...il.com>

commit 0bea96f59ba40e63c0ae93ad6a02417b95f22f4d upstream.

Fixed tables may be large enough, place all of them together with
allocated tags under memcg limits.

Cc: stable@...r.kernel.org
Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
Link: https://lore.kernel.org/r/b3ac9f5da9821bb59837b5fe25e8ef4be982218c.1629451684.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/io_uring.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -7195,11 +7195,11 @@ static struct io_rsrc_data *io_rsrc_data
 {
 	struct io_rsrc_data *data;
 
-	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	data = kzalloc(sizeof(*data), GFP_KERNEL_ACCOUNT);
 	if (!data)
 		return NULL;
 
-	data->tags = kvcalloc(nr, sizeof(*data->tags), GFP_KERNEL);
+	data->tags = kvcalloc(nr, sizeof(*data->tags), GFP_KERNEL_ACCOUNT);
 	if (!data->tags) {
 		kfree(data);
 		return NULL;
@@ -7477,7 +7477,7 @@ static bool io_alloc_file_tables(struct
 {
 	unsigned i, nr_tables = DIV_ROUND_UP(nr_files, IORING_MAX_FILES_TABLE);
 
-	table->files = kcalloc(nr_tables, sizeof(*table->files), GFP_KERNEL);
+	table->files = kcalloc(nr_tables, sizeof(*table->files), GFP_KERNEL_ACCOUNT);
 	if (!table->files)
 		return false;
 
@@ -7485,7 +7485,7 @@ static bool io_alloc_file_tables(struct
 		unsigned int this_files = min(nr_files, IORING_MAX_FILES_TABLE);
 
 		table->files[i] = kcalloc(this_files, sizeof(*table->files[i]),
-					GFP_KERNEL);
+					GFP_KERNEL_ACCOUNT);
 		if (!table->files[i])
 			break;
 		nr_files -= this_files;