The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 9d5a09c6f3b5fb85af20e3a34827b5d27d152b34 Mon Sep 17 00:00:00 2001

From: Gao Xiang xiang@kernel.org Date: Wed, 26 Feb 2020 16:10:06 +0800 Subject: [PATCH] erofs: correct the remaining shrink objects

The remaining count should not include successful shrink attempts.

Fixes: e7e9a307be9d ("staging: erofs: introduce workstation for decompression") Cc: stable@vger.kernel.org # 4.19+ Link: https://lore.kernel.org/r/20200226081008.86348-1-gaoxiang25@huawei.com Reviewed-by: Chao Yu yuchao0@huawei.com Signed-off-by: Gao Xiang gaoxiang25@huawei.com

diff --git a/fs/erofs/utils.c b/fs/erofs/utils.c index 4396b424373f..52d0be10f1aa 100644 --- a/fs/erofs/utils.c +++ b/fs/erofs/utils.c @@ -262,7 +262,7 @@ static unsigned long erofs_shrink_scan(struct shrinker *shrink, spin_unlock(&erofs_sb_list_lock); sbi->shrinker_run_no = run_no;

- freed += erofs_shrink_workstation(sbi, nr); + freed += erofs_shrink_workstation(sbi, nr - freed);

spin_lock(&erofs_sb_list_lock); /* Get the next list element before we move this one */