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authorTetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>2021-11-29 19:00:43 +0900
committerJens Axboe <axboe@kernel.dk>2021-11-29 06:44:45 -0700
commite3f9387aea67742b9d1f4de8e5bb2fd08a8a4584 (patch)
tree3869740b69b49283913409a14ffb2e9a92b88909 /drivers/block
parentzram: only make zram_wb_devops for CONFIG_ZRAM_WRITEBACK (diff)
downloadlinux-dev-e3f9387aea67742b9d1f4de8e5bb2fd08a8a4584.tar.xz
linux-dev-e3f9387aea67742b9d1f4de8e5bb2fd08a8a4584.zip
loop: Use pr_warn_once() for loop_control_remove() warning
kernel test robot reported that RCU stall via printk() flooding is possible [1] when stress testing. Link: https://lkml.kernel.org/r/20211129073709.GA18483@xsang-OptiPlex-9020 [1] Reported-by: kernel test robot <oliver.sang@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/loop.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index a154cab6cd98..c3a36cfaa855 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -2103,7 +2103,7 @@ static int loop_control_remove(int idx)
int ret;
if (idx < 0) {
- pr_warn("deleting an unspecified loop device is not supported.\n");
+ pr_warn_once("deleting an unspecified loop device is not supported.\n");
return -EINVAL;
}