From: Christoph Hellwig hch@lst.de
mainline inclusion from mainline-v5.11-rc1 commit f7387170339afb473a0d95b7732f904346f9795e category: bugfix bugzilla: 172157 https://gitee.com/openeuler/kernel/issues/I4DDEL CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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BDIs get unregistered during device removal, and this WARN can be trivially triggered by hot-removing a NVMe device while running fsx It is otherwise harmless as we still hold a BDI reference, and the writeback has been shut down already.
Link: https://lore.kernel.org/r/20200928122613.434820-1-hch@lst.de Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Ye Bin yebin10@huawei.com Reviewed-by: Zhang Yi yi.zhang@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/fs-writeback.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 0d0f014b09ec..c68e9100afb5 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -2298,10 +2298,6 @@ void __mark_inode_dirty(struct inode *inode, int flags)
wb = locked_inode_to_wb_and_lock_list(inode);
- WARN((wb->bdi->capabilities & BDI_CAP_WRITEBACK) && - !test_bit(WB_registered, &wb->state), - "bdi-%s not registered\n", bdi_dev_name(wb->bdi)); - inode->dirtied_when = jiffies; if (dirtytime) inode->dirtied_time_when = jiffies;