From: Sergey Senozhatsky <senozhatsky@chromium.org>
Date: Fri, 21 Feb 2025 22:25:48 +0000 (+0900)
Subject: zram: add might_sleep to zcomp API
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=2470557e8f90468c7daedb58d69ef49386d87c4c;p=users%2Fjedix%2Flinux-maple.git

zram: add might_sleep to zcomp API

Explicitly state that zcomp compress/decompress must be called from
non-atomic context.

Link: https://lkml.kernel.org/r/20250221222958.2225035-18-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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);
 }