From 9ec61f8c4a60efc4ffb0364da124a774a1553f4e Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 12 May 2014 12:47:36 +0800 Subject: [PATCH] Btrfs: mark mapping with error flag to report errors to userspace commit 5dca6eea91653e9949ce6eb9e9acab6277e2f2c4 upstream. According to commit 865ffef3797da2cac85b3354b5b6050dc9660978 (fs: fix fsync() error reporting), it's not stable to just check error pages because pages can be truncated or invalidated, we should also mark mapping with error flag so that a later fsync can catch the error. Signed-off-by: Liu Bo Signed-off-by: Chris Mason Signed-off-by: Greg Kroah-Hartman --- fs/btrfs/extent_io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index a5a4815..00a9d1c 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2361,6 +2361,8 @@ int end_extent_writepage(struct page *page, int err, u64 start, u64 end) if (!uptodate) { ClearPageUptodate(page); SetPageError(page); + ret = ret < 0 ? ret : -EIO; + mapping_set_error(page->mapping, ret); } return 0; } -- 2.7.4