From fc5c0c5825874859069ac44c367c724acd7190fb Mon Sep 17 00:00:00 2001 From: Daniel Vacek Date: Thu, 6 Mar 2025 14:15:35 +0100 Subject: btrfs: defrag: extend ioctl to accept compression levels The zstd and zlib compression types support setting compression levels. Enhance the defrag interface to specify the levels as well. For zstd the negative (realtime) levels are also accepted. Reviewed-by: Qu Wenruo Signed-off-by: Daniel Vacek Reviewed-by: David Sterba Signed-off-by: David Sterba --- include/uapi/linux/btrfs.h | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/btrfs.h b/include/uapi/linux/btrfs.h index d3b222d7af24..dd02160015b2 100644 --- a/include/uapi/linux/btrfs.h +++ b/include/uapi/linux/btrfs.h @@ -615,7 +615,9 @@ struct btrfs_ioctl_clone_range_args { */ #define BTRFS_DEFRAG_RANGE_COMPRESS 1 #define BTRFS_DEFRAG_RANGE_START_IO 2 +#define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4 #define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ + BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \ BTRFS_DEFRAG_RANGE_START_IO) struct btrfs_ioctl_defrag_range_args { @@ -640,10 +642,18 @@ struct btrfs_ioctl_defrag_range_args { /* * which compression method to use if turning on compression - * for this defrag operation. If unspecified, zlib will - * be used + * for this defrag operation. If unspecified, zlib will be + * used. If compression level is also being specified, set the + * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress + * member structure instead of the compress_type field. */ - __u32 compress_type; + union { + __u32 compress_type; + struct { + __u8 type; + __s8 level; + } compress; + }; /* spare for later */ __u32 unused[4]; -- cgit v1.2.3