Btrfs: Fix mount -o max_inline=0

max_inline=0 used to force the max_inline size to one sector instead.  Now
it properly disables inline data items, while still being able to read
any that happen to exist on disk.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 346932e546ba..f3274befd46a 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -184,8 +184,11 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                                 info->max_inline = btrfs_parse_size(num);
                                 kfree(num);
 
-                                info->max_inline = max_t(u64,
-                                        info->max_inline, root->sectorsize);
+                                if (info->max_inline) {
+                                        info->max_inline = max_t(u64,
+                                                info->max_inline,
+                                                root->sectorsize);
+                                }
                                 printk(KERN_INFO "btrfs: max_inline at %llu\n",
                                         info->max_inline);
                         }