commit 8216ef866df1119fd5a72372b8b29bce49c18590
author Josef Bacik <josef@redhat.com> Thu Oct 28 16:55:47 2010 -0400
committer Chris Mason <chris.mason@oracle.com> Fri Oct 29 09:26:37 2010 -0400
tree 8536ec3e5a308639eeef15ac7d6cb55b655fa0fb
parent 88c2ba3b069f1e0f4694124d02985fa7620a19f1

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>

fs/btrfs/extent-tree.c

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 1a94ee4..d2a7ff5 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -8200,6 +8200,8 @@
 		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);