Re: [PATCH v11 05/10] btrfs-progs: receive: process encoded_write commands
From: Nikolay Borisov <hidden>
Date: 2021-10-21 13:33:05
Also in:
linux-btrfs, linux-fsdevel
On 1.09.21 г. 20:01, Omar Sandoval wrote:
From: Boris Burkov <redacted>
<snip>
+/* Data is not compressed. */ +#define BTRFS_ENCODED_IO_COMPRESSION_NONE 0 +/* Data is compressed as a single zlib stream. */ +#define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1 +/* + * Data is compressed as a single zstd frame with the windowLog compression + * parameter set to no more than 17. + */ +#define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2 +/* + * Data is compressed page by page (using the page size indicated by the name of + * the constant) with LZO1X and wrapped in the format documented in + * fs/btrfs/lzo.c. For writes, the compression page size must match the + * filesystem page size. + */ +#define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3 +#define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4 +#define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5 +#define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6 +#define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7 +#define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8
nit: Make those an enum ? Same applies for the kernel counterpart patch.
quoted hunk ↗ jump to hunk
+ +/* Data is not encrypted. */ +#define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0 +#define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1 + /* Error codes as returned by the kernel */ enum btrfs_err_code { notused,@@ -949,6 +1077,10 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code) struct btrfs_ioctl_ino_lookup_user_args) #define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ struct btrfs_ioctl_vol_args_v2) +#define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ + struct btrfs_ioctl_encoded_io_args) +#define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ + struct btrfs_ioctl_encoded_io_args) #ifdef __cplusplus }