Signed-off-by: David Sterba <dste...@suse.cz>
---
fs/btrfs/ctree.h | 9 +++++----
fs/btrfs/disk-io.c | 4 +++-
fs/btrfs/ioctl.c | 6 +++++-
fs/btrfs/super.c | 8 ++++++++
4 files changed, 21 insertions(+), 6 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9cf62f8..76fea8c 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -461,7 +461,7 @@ struct btrfs_super_block {
#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_INCOMPAT_COMPRESS_SNAPPY (1ULL << 4)
+#define BTRFS_FEATURE_INCOMPAT_COMPRESSION_SQUAD (1ULL << 4)
#define BTRFS_FEATURE_COMPAT_SUPP 0ULL
#define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL
@@ -470,7 +470,7 @@ struct btrfs_super_block {
BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL | \
BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \
BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO | \
- BTRFS_FEATURE_INCOMPAT_COMPRESS_SNAPPY)
+ BTRFS_FEATURE_INCOMPAT_COMPRESSION_SQUAD)
/*
* A leaf is full of items. offset and size tell us where to find
@@ -627,8 +627,9 @@ enum btrfs_compression_type {
BTRFS_COMPRESS_ZLIB = 1,
BTRFS_COMPRESS_LZO = 2,
BTRFS_COMPRESS_SNAPPY = 3,
- BTRFS_COMPRESS_TYPES = 3,
- BTRFS_COMPRESS_LAST = 4,
+ BTRFS_COMPRESS_LZ4 = 4,
+ BTRFS_COMPRESS_TYPES = 4,
+ BTRFS_COMPRESS_LAST = 5,
};
struct btrfs_inode_item {
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index d8deea9..e179980 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2138,7 +2138,9 @@ struct btrfs_root *open_ctree(struct super_block *sb,
if (tree_root->fs_info->compress_type == BTRFS_COMPRESS_LZO)
features |= BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO;
if (tree_root->fs_info->compress_type == BTRFS_COMPRESS_SNAPPY)
- features |= BTRFS_FEATURE_INCOMPAT_COMPRESS_SNAPPY;
+ features |= BTRFS_FEATURE_INCOMPAT_COMPRESSION_SQUAD;
+ if (tree_root->fs_info->compress_type == BTRFS_COMPRESS_LZ4)
+ features |= BTRFS_FEATURE_INCOMPAT_COMPRESSION_SQUAD;
btrfs_set_super_incompat_flags(disk_super, features);
features = btrfs_super_compat_ro_flags(disk_super) &
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 834e95c..d568a11 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1182,7 +1182,11 @@ int btrfs_defrag_file(struct inode *inode, struct file
*file,
btrfs_set_super_incompat_flags(disk_super, features);
}
if (range->compress_type == BTRFS_COMPRESS_SNAPPY) {
- features |= BTRFS_FEATURE_INCOMPAT_COMPRESS_SNAPPY;
+ features |= BTRFS_FEATURE_INCOMPAT_COMPRESSION_SQUAD;
+ btrfs_set_super_incompat_flags(disk_super, features);
+ }
+ if (range->compress_type == BTRFS_COMPRESS_LZ4) {
+ features |= BTRFS_FEATURE_INCOMPAT_COMPRESSION_SQUAD;
btrfs_set_super_incompat_flags(disk_super, features);
}
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index c91f0e1..b65c94b 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -287,6 +287,12 @@ int btrfs_parse_options(struct btrfs_root *root, char
*options)
} else if (strcmp(args[0].from, "snappy") == 0) {
compress_type = "snappy";
info->compress_type = BTRFS_COMPRESS_SNAPPY;
+ } else if (strcmp(args[0].from, "lz4") == 0) {
+ compress_type = "lz4";
+ info->compress_type = BTRFS_COMPRESS_LZ4;
+ /* remove when implemented */
+ ret = -EINVAL;
+ goto out;
} else {
ret = -EINVAL;
goto out;
@@ -734,6 +740,8 @@ static int btrfs_show_options(struct seq_file *seq, struct
vfsmount *vfs)
compress_type = "zlib";
else if (info->compress_type == BTRFS_COMPRESS_SNAPPY)
compress_type = "snappy";
+ else if (info->compress_type == BTRFS_COMPRESS_LZ4)
+ compress_type = "lz4";
else if (info->compress_type == BTRFS_COMPRESS_LZO)
compress_type = "lzo";
else
--
1.7.8
--
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