linux-ext4 - [PATCH] ext4: don't ignore return values from ext4_ext

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Message-Id: <20200421023959.20879-1-harshadshirwadkar@gmail.com>
Date:   Mon, 20 Apr 2020 19:39:58 -0700
From:   Harshad Shirwadkar <harshadshirwadkar@...il.com>
To:     linux-ext4@...r.kernel.org
Cc:     Harshad Shirwadkar <harshadshirwadkar@...il.com>
Subject: [PATCH] ext4: don't ignore return values from ext4_ext_dirty()

Don't ignore return values from ext4_ext_dirty, since the errors
indicate valid failures below Ext4.  In all of the other instances of
ext4_ext_dirty calls, the error return value is handled in some
way. This patch makes those remaining couple of places to handle
ext4_ext_dirty errors as well. In the longer run, we probably should
make sure that errors from other mark_dirty routines are handled as
well.

Ran gce-xfstests smoke tests and verified that there were no
regressions.

Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@...il.com>
---
 fs/ext4/extents.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index f2b577b315a0..f62f55a16fe3 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -3244,8 +3244,7 @@ static int ext4_split_extent_at(handle_t *handle,
 
 fix_extent_len:
 	ex->ee_len = orig_ex.ee_len;
-	ext4_ext_dirty(handle, inode, path + path->p_depth);
-	return err;
+	return ext4_ext_dirty(handle, inode, path + path->p_depth);
 }
 
 /*
@@ -3503,7 +3502,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
 	}
 	if (allocated) {
 		/* Mark the block containing both extents as dirty */
-		ext4_ext_dirty(handle, inode, path + depth);
+		err = ext4_ext_dirty(handle, inode, path + depth);
 
 		/* Update path to point to the right extent */
 		path[depth].p_ext = abut_ex;
-- 
2.26.1.301.g55bc3eb7cb9-goog