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btrfs: fix incorrect error return ret being passed to mapping_set_error

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[ Upstream commit bff5baf8aa37a97293725a16c03f49872249c07e ]

The setting of return code ret should be based on the error code
passed into function end_extent_writepage and not on ret. Thanks
to Liu Bo for spotting this mistake in the original fix I submitted.

Detected by CoverityScan, CID#1414312 ("Logically dead code")

Fixes: 5dca6eea91653e ("Btrfs: mark mapping with error flag to report errors to userspace")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Colin Ian King 2017-05-09 18:14:01 +01:00 committed by Greg Kroah-Hartman
parent 413d35ed7e
commit ef51fe4d40
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent_io.c
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@ -2534,7 +2534,7 @@ int end_extent_writepage(struct page *page, int err, u64 start, u64 end)
if (!uptodate) {
ClearPageUptodate(page);
SetPageError(page);
ret = ret < 0 ? ret : -EIO;
ret = err < 0 ? err : -EIO;
mapping_set_error(page->mapping, ret);
}
return 0;