bbdd68086c
As discussed at the Plumber's Conference, reserve the bit 0x04 in fallocate() to prevent collisions with a commonly used out-of-tree patch which implements the no-hide-stale feature. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
29 lines
725 B
C
29 lines
725 B
C
#ifndef _FALLOC_H_
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#define _FALLOC_H_
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#define FALLOC_FL_KEEP_SIZE 0x01 /* default is extend size */
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#define FALLOC_FL_PUNCH_HOLE 0x02 /* de-allocates range */
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#define FALLOC_FL_NO_HIDE_STALE 0x04 /* reserved codepoint */
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#ifdef __KERNEL__
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/*
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* Space reservation ioctls and argument structure
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* are designed to be compatible with the legacy XFS ioctls.
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*/
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struct space_resv {
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__s16 l_type;
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__s16 l_whence;
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__s64 l_start;
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__s64 l_len; /* len == 0 means until end of file */
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__s32 l_sysid;
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__u32 l_pid;
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__s32 l_pad[4]; /* reserved area */
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};
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#define FS_IOC_RESVSP _IOW('X', 40, struct space_resv)
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#define FS_IOC_RESVSP64 _IOW('X', 42, struct space_resv)
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#endif /* __KERNEL__ */
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#endif /* _FALLOC_H_ */
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