From: Josef Bacik <josef@redhat.com>
Date: Thu, 28 Oct 2010 20:55:47 +0000 (-0400)
Subject: Btrfs: let the user know space caching is enabled
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8216ef866df1119fd5a72372b8b29bce49c18590;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Btrfs: let the user know space caching is enabled

If you mount -o space_cache, the option will be persistent across mounts, but to
make sure the user knows that they did this, emit a message telling them if they
didn't mount with -o space_cache but the feature is still used.

Signed-off-by: Josef Bacik <josef@redhat.com>
---

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 1a94ee4c4fbb..d2a7ff53e99a 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8200,6 +8200,8 @@ int btrfs_read_block_groups(struct btrfs_root *root)
 		need_clear = 1;
 	if (btrfs_test_opt(root, CLEAR_CACHE))
 		need_clear = 1;
+	if (!btrfs_test_opt(root, SPACE_CACHE) && cache_gen)
+		printk(KERN_INFO "btrfs: disk space caching is enabled\n");
 
 	while (1) {
 		ret = find_first_block_group(root, path, &key);