commit eb362aca3baf110e17b9a0a56ad45c4cd8595298
author Qu Wenruo <wqu@suse.com> Wed Jun 24 18:03:12 2020 +0200
committer Tom Rini <trini@konsulko.com> Mon Sep 07 21:00:36 2020 -0400
tree cbe78a36495fecfd635519f5c1d83b5ee7c9078d
parent cf5a3a0b29c6e9b2cdac47531b0a1a7409ba88a9

fs: btrfs: Introduce function to resolve path in one subvolume

This patch introduces a new function, get_path_in_subvolume(), which
resolves inode number into path inside a subvolume.

This function will be later used for btrfs subvolume list functionality.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: Marek Behún <marek.behun@nic.cz>

fs/btrfs/compat.h

diff --git a/fs/btrfs/compat.h b/fs/btrfs/compat.h
index dbb3395..9cf8a10 100644
--- a/fs/btrfs/compat.h
+++ b/fs/btrfs/compat.h
@@ -18,6 +18,7 @@
 
 /* No <linux/limits.h> so have to define it here */
 #define XATTR_NAME_MAX		255
+#define PATH_MAX		4096
 
 /*
  * Macros to generate set/get funcs for the struct fields