search for: btrfs_ioctl_same_arg

Displaying 6 results from an estimated 6 matches for "btrfs_ioctl_same_arg".

Did you mean: btrfs_ioctl_same_args
2013 Jun 26
6
[PROGS PATCH] Import btrfs-extent-same
...de <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <stddef.h> +#include <errno.h> +#include <string.h> +#include <sys/ioctl.h> + +#define BTRFS_IOCTL_MAGIC 0x94 + +#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ + struct btrfs_ioctl_same_args) + +#define BTRFS_SAME_DATA_DIFFERS 1 +/* For extent-same ioctl */ +struct btrfs_ioctl_same_extent_info { + int64_t fd; /* in - destination file */ + uint64_t logical_offset; /* in - start of extent in destination */ + uint64_t bytes_deduped; /* out - total # of bytes we + * were able to d...
2011 Jan 06
3
Offline Deduplication for Btrfs V2
Just a quick update, I''ve dropped the hashing stuff in favor of doing a memcmp in the kernel to make sure the data is still the same. The thing that takes a while is reading the data up from disk, so doing a memcmp of the entire buffer isn''t that big of a deal, not to mention there''s a possiblity for malicious users if there is a problem with the hashing algorithms we
2013 Aug 06
6
[PATCH 0/4] btrfs: out-of-band (aka offline) dedupe v4
...-systems.btrfs/8508 I''ve made significant updates and changes from the original. In particular the structure passed is more fleshed out, this series has a high degree of code sharing between itself and the clone code, and the locking has been updated. The ioctl accepts a struct: struct btrfs_ioctl_same_args { __u64 logical_offset; /* in - start of extent in source */ __u64 length; /* in - length of extent */ __u16 dest_count; /* in - total elements in info array */ __u16 reserved1; __u32 reserved2; struct btrfs_ioctl_same_extent_info info[0]; }; Userspace puts each duplicate extent (other tha...
2014 Apr 23
0
[PATCH 001/001] btrfs: Mechanism to modify the permission of a subvolume
...11:37:02.000000000 +0530 +++ linux-3.13.6_btrfs/include/uapi/linux/btrfs.h 2014-03-19 15:34:30.648255239 +0530 @@ -606,5 +606,7 @@ static inline char *btrfs_err_str(enum b struct btrfs_ioctl_dev_replace_args) #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ struct btrfs_ioctl_same_args) +#define BTRFS_IOC_SUBVOL_MODIFY _IOW(BTRFS_IOCTL_MAGIC, 55, \ + struct btrfs_ioctl_vol_args_v2) #endif /* _UAPI_LINUX_BTRFS_H */
2013 Oct 25
8
[PATCH] btrfs: add framework to read fs info from btrfs-control
...struct btrfs_ioctl_vol_args) #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ @@ -606,5 +623,7 @@ static inline char *btrfs_err_str(enum btrfs_err_code err_code) struct btrfs_ioctl_dev_replace_args) #define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ struct btrfs_ioctl_same_args) +#define BTRFS_IOC_GET_FSLIST _IOWR(BTRFS_IOCTL_MAGIC, 56, \ + struct btrfs_ioctl_fslist_args) #endif /* _UAPI_LINUX_BTRFS_H */ -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordom...
2011 Jan 05
52
Offline Deduplication for Btrfs
Here are patches to do offline deduplication for Btrfs. It works well for the cases it''s expected to, I''m looking for feedback on the ioctl interface and such, I''m well aware there are missing features for the userspace app (like being able to set a different blocksize). If this interface is acceptable I will flesh out the userspace app a little more, but I believe the