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Fri, 21 Feb 2025 14:31:44 -0800 (PST) Received: from localhost ([2401:fa00:8f:203:f987:e1e:3dbb:2191]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-7326abf096csm12468634b3a.170.2025.02.21.14.31.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Feb 2025 14:31:44 -0800 (PST) From: Sergey Senozhatsky To: Andrew Morton Cc: Yosry Ahmed , Hillf Danton , Kairui Song , Sebastian Andrzej Siewior , Minchan Kim , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Sergey Senozhatsky Subject: [PATCH v8 17/17] zram: add might_sleep to zcomp API Date: Sat, 22 Feb 2025 07:25:48 +0900 Message-ID: <20250221222958.2225035-18-senozhatsky@chromium.org> X-Mailer: git-send-email 2.48.1.601.g30ceb7b040-goog In-Reply-To: <20250221222958.2225035-1-senozhatsky@chromium.org> References: <20250221222958.2225035-1-senozhatsky@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Explicitly state that zcomp compress/decompress must be called from non-atomic context. Signed-off-by: Sergey Senozhatsky --- drivers/block/zram/zcomp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c index a1d627054bb1..d26a58c67e95 100644 --- a/drivers/block/zram/zcomp.c +++ b/drivers/block/zram/zcomp.c @@ -146,6 +146,7 @@ int zcomp_compress(struct zcomp *comp, struct zcomp_str= m *zstrm, }; int ret; =20 + might_sleep(); ret =3D comp->ops->compress(comp->params, &zstrm->ctx, &req); if (!ret) *dst_len =3D req.dst_len; @@ -162,6 +163,7 @@ int zcomp_decompress(struct zcomp *comp, struct zcomp_s= trm *zstrm, .dst_len =3D PAGE_SIZE, }; =20 + might_sleep(); return comp->ops->decompress(comp->params, &zstrm->ctx, &req); } =20 --=20 2.48.1.601.g30ceb7b040-goog