openwrt-barrierbreaker/target/linux/generic/patches-3.10/551-ubifs-fix-default-compression-selection.patch
nbd e345c9a277 create branch for barrier breaker (from trunk r41863)
git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@41864 3c298f89-4303-0410-b956-a3cf2f4a3e73
2014-07-28 23:18:57 +00:00

29 lines
800 B
Diff

--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -63,6 +63,17 @@
/* Default time granularity in nanoseconds */
#define DEFAULT_TIME_GRAN 1000000000
+static int get_default_compressor(void)
+{
+ if (ubifs_compr_present(UBIFS_COMPR_LZO))
+ return UBIFS_COMPR_LZO;
+
+ if (ubifs_compr_present(UBIFS_COMPR_ZLIB))
+ return UBIFS_COMPR_ZLIB;
+
+ return UBIFS_COMPR_NONE;
+}
+
/**
* create_default_filesystem - format empty UBI volume.
* @c: UBIFS file-system description object
@@ -183,7 +194,7 @@ static int create_default_filesystem(str
if (c->mount_opts.override_compr)
sup->default_compr = cpu_to_le16(c->mount_opts.compr_type);
else
- sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO);
+ sup->default_compr = cpu_to_le16(get_default_compressor());
generate_random_uuid(sup->uuid);