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Wed, 26 Feb 2025 20:38:15 -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 v9 19/19] zram: add might_sleep to zcomp API Date: Thu, 27 Feb 2025 13:35:37 +0900 Message-ID: <20250227043618.88380-20-senozhatsky@chromium.org> X-Mailer: git-send-email 2.48.1.658.g4767266eb4-goog In-Reply-To: <20250227043618.88380-1-senozhatsky@chromium.org> References: <20250227043618.88380-1-senozhatsky@chromium.org> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Queue-Id: A94531C0009 X-Stat-Signature: amwx5amm5nezh5rpu7etot7qbx6f6jqz X-Rspamd-Server: rspam03 X-HE-Tag: 1740631096-725887 X-HE-Meta: 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 XHkY2RfC /lMrVFrKfd+TsxJIZL2Lo21QJUmV19hRsvr7mLOpiE3WJmFUALp31slSzdNdBk20Tgbo/oqWNLrTMPt81AuE81x0X4h0b7oyPcSNrYdHyvQr/CJ9vp8HXpVGDiE6SL96qbo4XwS2nT53+0BSToJXQegmSdLlBPR4nuP1ZdcvJ+azRIfb3lcEWbUUXc19+smbV2VuA/5tVALzAbnZ+71FJzp44P2WmtIv0mu4Hiv88MkpMGgRA0clRdqpCoOUpNhfCMULM6qpIAYtmXfZM5p3Th2ZClqXlEtWP+7xxAkeft52CTIt02EEa7d5T3C9oUS/nDEmnA61Hi5jC63E2PSVpoLcvdKIoaD2/TgymVY43I7YVPHw= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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_strm *zstrm, }; int ret; + might_sleep(); ret = comp->ops->compress(comp->params, &zstrm->ctx, &req); if (!ret) *dst_len = req.dst_len; @@ -162,6 +163,7 @@ int zcomp_decompress(struct zcomp *comp, struct zcomp_strm *zstrm, .dst_len = PAGE_SIZE, }; + might_sleep(); return comp->ops->decompress(comp->params, &zstrm->ctx, &req); }