From: Naohiro Aota <naota@xxxxxxxxx>
This new compression property, "off", to disable compression of
the file at all.
Signed-off-by: Naohiro Aota <naota@xxxxxxxxx>
Signed-off-by: Satoru Takeuchi <takeuchi_satoru@xxxxxxxxxxxxxx>
---
fs/btrfs/props.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c
index bf005f4..38efbe1 100644
--- a/fs/btrfs/props.c
+++ b/fs/btrfs/props.c
@@ -382,6 +382,8 @@ static int prop_compression_validate(const char *value, size_t len)
return 0;
else if (!strncmp("zlib", value, len))
return 0;
+ else if (!strncmp("off", value, len))
+ return 0;
return -EINVAL;
}
@@ -400,6 +402,14 @@ static int prop_compression_apply(struct inode *inode,
return 0;
}
+ if (!strncmp("off", value, len)) {
+ BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
+ BTRFS_I(inode)->flags &= ~BTRFS_INODE_COMPRESS;
+ BTRFS_I(inode)->force_compress = BTRFS_COMPRESS_NONE;
+
+ return 0;
+ }
+
if (!strncmp("lzo", value, len))
type = BTRFS_COMPRESS_LZO;
else if (!strncmp("zlib", value, len))
@@ -423,5 +433,8 @@ static const char *prop_compression_extract(struct inode *inode)
return "lzo";
}
+ if (BTRFS_I(inode)->flags & BTRFS_INODE_NOCOMPRESS)
+ return "off";
+
return NULL;
}
-- 1.8.3.1
--
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