forked from mirrors/linux
71be6b4942
Add a new fallocate mode flag that explicitly unshares blocks on filesystems that support such features. The new flag can only be used with an allocate-mode fallocate call. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
31 lines
753 B
C
31 lines
753 B
C
#ifndef _FALLOC_H_
|
|
#define _FALLOC_H_
|
|
|
|
#include <uapi/linux/falloc.h>
|
|
|
|
|
|
/*
|
|
* Space reservation ioctls and argument structure
|
|
* are designed to be compatible with the legacy XFS ioctls.
|
|
*/
|
|
struct space_resv {
|
|
__s16 l_type;
|
|
__s16 l_whence;
|
|
__s64 l_start;
|
|
__s64 l_len; /* len == 0 means until end of file */
|
|
__s32 l_sysid;
|
|
__u32 l_pid;
|
|
__s32 l_pad[4]; /* reserved area */
|
|
};
|
|
|
|
#define FS_IOC_RESVSP _IOW('X', 40, struct space_resv)
|
|
#define FS_IOC_RESVSP64 _IOW('X', 42, struct space_resv)
|
|
|
|
#define FALLOC_FL_SUPPORTED_MASK (FALLOC_FL_KEEP_SIZE | \
|
|
FALLOC_FL_PUNCH_HOLE | \
|
|
FALLOC_FL_COLLAPSE_RANGE | \
|
|
FALLOC_FL_ZERO_RANGE | \
|
|
FALLOC_FL_INSERT_RANGE | \
|
|
FALLOC_FL_UNSHARE_RANGE)
|
|
|
|
#endif /* _FALLOC_H_ */
|