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Btrfs: mark mapping with error flag to report errors to userspace 

According to commit 865ffef379
(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 <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Liu Bo 2014-05-12 12:47:36 +08:00 committed by Chris Mason
parent 29cc83f69c
commit 5dca6eea91
1 changed files with 2 additions and 0 deletions
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2
fs/btrfs/extent_io.c
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@ -2367,6 +2367,8 @@ 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;
}