From a418b24318723c0a45fe1f1b76b9286baa36c537 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 18 Nov 2010 03:49:56 +0000 Subject: Update for lzo support [Btrfs-Progs][V2] Update for lzo support - Add incompat flag, otherwise btrfs-progs will report error when operating on btrfs filesystems mounted with lzo option. - Update man page. - Allow to turn on lzo compression for defrag operation: # btrfs filesystem defragment -c[zlib, lzo] Note: "-c zlib" will fail, because that's how getopt() works for optional arguments. Signed-off-by: Li Zefan Signed-off-by: Chris Mason --- ctree.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'ctree.h') diff --git a/ctree.h b/ctree.h index ed83d02f..61eb6397 100644 --- a/ctree.h +++ b/ctree.h @@ -354,12 +354,14 @@ struct btrfs_super_block { #define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0) #define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1) #define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2) +#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3) #define BTRFS_FEATURE_COMPAT_SUPP 0ULL #define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL #define BTRFS_FEATURE_INCOMPAT_SUPP \ (BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF | \ BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \ + BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \ BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) /* @@ -505,9 +507,11 @@ struct btrfs_timespec { } __attribute__ ((__packed__)); typedef enum { - BTRFS_COMPRESS_NONE = 0, - BTRFS_COMPRESS_ZLIB = 1, - BTRFS_COMPRESS_LAST = 2, + BTRFS_COMPRESS_NONE = 0, + BTRFS_COMPRESS_ZLIB = 1, + BTRFS_COMPRESS_LZO = 2, + BTRFS_COMPRESS_TYPES = 2, + BTRFS_COMPRESS_LAST = 3, } btrfs_compression_type; /* we don't understand any encryption methods right now */ -- cgit v1.2.3