UBIFS: introduce compression mount options

[linux-2.6-omap-h63xx.git] / fs / ubifs / sb.c

diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c
index 0f392351dc5a57232c776ccf7577c7d759d5da85..c5da201ab54f2697b5013fad050fc5e2d5ea8e8d 100644 (file)
--- a/fs/ubifs/sb.c
+++ b/fs/ubifs/sb.c
@@ -179,8 +179,11 @@ static int create_default_filesystem(struct ubifs_info *c)
        sup->fanout        = cpu_to_le32(DEFAULT_FANOUT);
        sup->lsave_cnt     = cpu_to_le32(c->lsave_cnt);
        sup->fmt_version   = cpu_to_le32(UBIFS_FORMAT_VERSION);
-       sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO);
        sup->time_gran     = cpu_to_le32(DEFAULT_TIME_GRAN);
+       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);
 
        generate_random_uuid(sup->uuid);
 
@@ -582,16 +585,15 @@ int ubifs_read_superblock(struct ubifs_info *c)
        c->jhead_cnt     = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT;
        c->fanout        = le32_to_cpu(sup->fanout);
        c->lsave_cnt     = le32_to_cpu(sup->lsave_cnt);
-       c->default_compr = le16_to_cpu(sup->default_compr);
        c->rp_size       = le64_to_cpu(sup->rp_size);
        c->rp_uid        = le32_to_cpu(sup->rp_uid);
        c->rp_gid        = le32_to_cpu(sup->rp_gid);
        sup_flags        = le32_to_cpu(sup->flags);
+       if (!c->mount_opts.override_compr)
+               c->default_compr = le16_to_cpu(sup->default_compr);
 
        c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran);
-
        memcpy(&c->uuid, &sup->uuid, 16);
-
        c->big_lpt = !!(sup_flags & UBIFS_FLG_BIGLPT);
 
        /* Automatically increase file system size to the maximum size */