From: Sergey Senozhatsky <senozhatsky@chromium.org>
To: Andrew Morton <akpm@linux-foundation.org>,
Yosry Ahmed <yosry.ahmed@linux.dev>
Cc: Minchan Kim <minchan@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Nhat Pham <nphamcs@gmail.com>, Uros Bizjak <ubizjak@gmail.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Sergey Senozhatsky <senozhatsky@chromium.org>
Subject: [PATCHv2 7/7] zram: add might_sleep to zcomp API
Date: Thu, 30 Jan 2025 13:42:50 +0900 [thread overview]
Message-ID: <20250130044455.2642465-8-senozhatsky@chromium.org> (raw)
In-Reply-To: <20250130044455.2642465-1-senozhatsky@chromium.org>
Explicitly state that zcomp compress/decompress must be
called from non-atomic context.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
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 675f2a51ad5f..f4235735787b 100644
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -185,6 +185,7 @@ 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;
@@ -201,6 +202,7 @@ 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);
}
--
2.48.1.262.g85cc9f2d1e-goog
next prev parent reply other threads:[~2025-01-30 4:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-30 4:42 [PATCHv2 0/7] zsmalloc: preemptible object mapping Sergey Senozhatsky
2025-01-30 4:42 ` [PATCHv2 1/7] zsmalloc: factor out pool locking helpers Sergey Senozhatsky
2025-01-30 4:42 ` [PATCHv2 2/7] zsmalloc: re-shuffle zs_pool members Sergey Senozhatsky
2025-01-30 4:42 ` [PATCHv2 3/7] zsmalloc: factor out size-class locking helpers Sergey Senozhatsky
2025-01-30 4:42 ` [PATCHv2 4/7] zsmalloc: make zspage lock preemptible Sergey Senozhatsky
2025-01-30 4:42 ` [PATCHv2 5/7] zsmalloc: introduce new object mapping API Sergey Senozhatsky
2025-01-30 4:42 ` [PATCHv2 6/7] zram: switch to new zsmalloc " Sergey Senozhatsky
2025-01-30 4:42 ` Sergey Senozhatsky [this message]
2025-01-30 14:21 ` [PATCHv2 0/7] zsmalloc: preemptible object mapping Sergey Senozhatsky
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