linux-kernel - [PATCH 5.10 003/306] io_uring: place fixed tables under memcg limits

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Message-Id: <20210916155754.022754998@linuxfoundation.org>
Date:   Thu, 16 Sep 2021 17:55:48 +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 5.10 003/306] 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 |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -7383,7 +7383,7 @@ static int io_sqe_alloc_file_tables(stru
 
 		this_files = min(nr_files, IORING_MAX_FILES_TABLE);
 		table->files = kcalloc(this_files, sizeof(struct file *),
-					GFP_KERNEL);
+					GFP_KERNEL_ACCOUNT);
 		if (!table->files)
 			break;
 		nr_files -= this_files;
@@ -7582,7 +7582,7 @@ static int io_sqe_files_register(struct
 	if (nr_args > rlimit(RLIMIT_NOFILE))
 		return -EMFILE;
 
-	file_data = kzalloc(sizeof(*ctx->file_data), GFP_KERNEL);
+	file_data = kzalloc(sizeof(*ctx->file_data), GFP_KERNEL_ACCOUNT);
 	if (!file_data)
 		return -ENOMEM;
 	file_data->ctx = ctx;
@@ -7592,7 +7592,7 @@ static int io_sqe_files_register(struct
 
 	nr_tables = DIV_ROUND_UP(nr_args, IORING_MAX_FILES_TABLE);
 	file_data->table = kcalloc(nr_tables, sizeof(*file_data->table),
-				   GFP_KERNEL);
+				   GFP_KERNEL_ACCOUNT);
 	if (!file_data->table)
 		goto out_free;