linux-ext4 - [PATCH v5 05/17] ext2: return -EIO on ext2_iomap

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Date:   Fri,  7 Oct 2016 15:08:52 -0600
From:   Ross Zwisler <ross.zwisler@...ux.intel.com>
To:     linux-kernel@...r.kernel.org
Cc:     Ross Zwisler <ross.zwisler@...ux.intel.com>,
        "Theodore Ts'o" <tytso@....edu>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Christoph Hellwig <hch@....de>,
        Dan Williams <dan.j.williams@...el.com>,
        Dave Chinner <david@...morbit.com>, Jan Kara <jack@...e.com>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-mm@...ck.org, linux-nvdimm@...ts.01.org,
        linux-xfs@...r.kernel.org
Subject: [PATCH v5 05/17] ext2: return -EIO on ext2_iomap_end() failure

Right now we just return 0 for success, but we really want to let callers
know about this failure.

Signed-off-by: Ross Zwisler <ross.zwisler@...ux.intel.com>
---
 fs/ext2/inode.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index c7dbb46..368913c 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -830,8 +830,10 @@ ext2_iomap_end(struct inode *inode, loff_t offset, loff_t length,
 {
 	if (iomap->type == IOMAP_MAPPED &&
 	    written < length &&
-	    (flags & IOMAP_WRITE))
+	    (flags & IOMAP_WRITE)) {
 		ext2_write_failed(inode->i_mapping, offset + length);
+		return -EIO;
+	}
 	return 0;
 }
 
-- 
2.7.4

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