[JFFS2] Add LZO compression support.

Add LZO1X compression/decompression support to jffs2.

LZO's interface doesn't entirely match that required by jffs2 so a
buffer and memcpy is unavoidable.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c
index d90ca05e4992..bcc28d266a12 100644
--- a/fs/jffs2/compr.c
+++ b/fs/jffs2/compr.c
@@ -286,6 +286,9 @@ int __init jffs2_compressors_init(void)
         jffs2_rubinmips_init();
         jffs2_dynrubin_init();
 #endif
+#ifdef CONFIG_JFFS2_LZO
+        jffs2_lzo_init();
+#endif
 /* Setting default compression mode */
 #ifdef CONFIG_JFFS2_CMODE_NONE
         jffs2_compression_mode = JFFS2_COMPR_MODE_NONE;
@@ -304,6 +307,9 @@ int __init jffs2_compressors_init(void)
 int jffs2_compressors_exit(void)
 {
 /* Unregistering compressors */
+#ifdef CONFIG_JFFS2_LZO
+        jffs2_lzo_exit();
+#endif
 #ifdef CONFIG_JFFS2_RUBIN
         jffs2_dynrubin_exit();
         jffs2_rubinmips_exit();