Hello,
Please add upstream 'commit 3d5fe03a3ea01 ("zram/zcomp: use
GFP_NOIO to allocate streams")' to stable releases.
:commit 3d5fe03a3ea013060ebba2a811aeb0f23f56aefa
:Author: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
:
: zram/zcomp: use GFP_NOIO to allocate streams
:
: We can end up allocating a new compression stream with GFP_KERNEL from
: within the IO path, which may result is nested (recursive) IO
: operations. That can introduce problems if the IO path in question is a
: reclaimer, holding some locks that will deadlock nested IOs.
:
: Allocate streams and working memory using GFP_NOIO flag, forbidding
: recursive IO and FS operations.
-ss
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