linux-kernel - [PATCH 4.4 045/103] ext4 crypto: fix some error handling

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Message-Id: <20170523200900.718233044@linuxfoundation.org>
Date:   Tue, 23 May 2017 22:09:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Theodore Tso <tytso@....edu>,
        Eric Biggers <ebiggers@...gle.com>
Subject: [PATCH 4.4 045/103] ext4 crypto: fix some error handling

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 4762cc3fbbd89e5fd316d6e4d3244a8984444f8d upstream.

We should be testing for -ENOMEM but the minus sign is missing.

Fixes: c9af28fdd449 ('ext4 crypto: don't let data integrity writebacks fail with ENOMEM')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Eric Biggers <ebiggers@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/ext4/page-io.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -492,7 +492,7 @@ int ext4_bio_write_page(struct ext4_io_s
 		data_page = ext4_encrypt(inode, page, gfp_flags);
 		if (IS_ERR(data_page)) {
 			ret = PTR_ERR(data_page);
-			if (ret == ENOMEM && wbc->sync_mode == WB_SYNC_ALL) {
+			if (ret == -ENOMEM && wbc->sync_mode == WB_SYNC_ALL) {
 				if (io->io_bio) {
 					ext4_io_submit(io);
 					congestion_wait(BLK_RW_ASYNC, HZ/50);