From 0f27f06c8d9aee91a4943aec8af8c5ce583a7fd0 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Thu, 21 Oct 2021 21:05:00 +0800 Subject: [PATCH] iomap: pass writeback errors to the mapping stable inclusion from stable-5.10.67 commit fca514f25c4d714d80aac858986b33dd092fefaf bugzilla: 182619 https://gitee.com/openeuler/kernel/issues/I4EWO7 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=fca514f25c4d714d80aac858986b33dd092fefaf -------------------------------- [ Upstream commit b69eea82d37d9ee7cfb3bf05103549dd4ed5ffc3 ] Modern-day mapping_set_error has the ability to squash the usual negative error code into something appropriate for long-term storage in a struct address_space -- ENOSPC becomes AS_ENOSPC, and everything else becomes EIO. iomap squashes /everything/ to EIO, just as XFS did before that, but this doesn't make sense. Fix this by making it so that we can pass ENOSPC to userspace when writeback fails due to space problems. Signed-off-by: Darrick J. Wong Reviewed-by: Matthew Wilcox (Oracle) Signed-off-by: Sasha Levin Signed-off-by: Chen Jun Acked-by: Weilong Chen Signed-off-by: Chen Jun Signed-off-by: Zheng Zengkai --- fs/iomap/buffered-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 10cc7979ce38..caed9d98c64a 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1045,7 +1045,7 @@ iomap_finish_page_writeback(struct inode *inode, struct page *page, if (error) { SetPageError(page); - mapping_set_error(inode->i_mapping, -EIO); + mapping_set_error(inode->i_mapping, error); } WARN_ON_ONCE(i_blocks_per_page(inode, page) > 1 && !iop); -- GitLab