linux-kernel - [PATCH] btrfs: ioctl: resize: Only how new size if size changed

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Message-Id: <20200211133957.14399-1-marcos@mpdesouza.com>
Date:   Tue, 11 Feb 2020 10:39:57 -0300
From:   Marcos Paulo de Souza <marcos@...esouza.com>
To:     linux-kernel@...r.kernel.org
Cc:     Marcos Paulo de Souza <marcos@...esouza.com>
Subject: [PATCH] btrfs: ioctl: resize: Only how new size if size changed

There is no point to inform the user about "new size" if didn't changed
at all.

Signed-off-by: Marcos Paulo de Souza <marcos@...esouza.com>
---
 fs/btrfs/ioctl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index be5350582955..fa31a8021d24 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1712,9 +1712,6 @@ static noinline int btrfs_ioctl_resize(struct file *file,
 
 	new_size = round_down(new_size, fs_info->sectorsize);
 
-	btrfs_info_in_rcu(fs_info, "new size for %s is %llu",
-			  rcu_str_deref(device->name), new_size);
-
 	if (new_size > old_size) {
 		trans = btrfs_start_transaction(root, 0);
 		if (IS_ERR(trans)) {
@@ -1727,6 +1724,9 @@ static noinline int btrfs_ioctl_resize(struct file *file,
 		ret = btrfs_shrink_device(device, new_size);
 	} /* equal, nothing need to do */
 
+	if (ret == 0 && new_size != old_size)
+		btrfs_info_in_rcu(fs_info, "new size for %s is %llu",
+			  rcu_str_deref(device->name), new_size);
 out_free:
 	kfree(vol_args);
 out:
-- 
2.24.0