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| author | James Morris <james.l.morris@oracle.com> | 2017-07-25 10:44:18 +1000 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2017-07-25 10:44:18 +1000 |
| commit | 53a2ebaaabc1eb8458796fec3bc1e0e80746b642 (patch) | |
| tree | 9d1f9227b49392cdd2edcc01057517da4f4b09c2 /include/uapi/linux/fcntl.h | |
| parent | 3cf29931453215536916d0c4da953fce1911ced3 (diff) | |
| parent | 520eccdfe187591a51ea9ab4c1a024ae4d0f68d9 (diff) | |
| download | lwn-53a2ebaaabc1eb8458796fec3bc1e0e80746b642.tar.gz lwn-53a2ebaaabc1eb8458796fec3bc1e0e80746b642.zip | |
sync to Linus v4.13-rc2 for subsystem developers to work against
Diffstat (limited to 'include/uapi/linux/fcntl.h')
| -rw-r--r-- | include/uapi/linux/fcntl.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/uapi/linux/fcntl.h b/include/uapi/linux/fcntl.h index 813afd6eee71..ec69d55bcec7 100644 --- a/include/uapi/linux/fcntl.h +++ b/include/uapi/linux/fcntl.h @@ -43,6 +43,27 @@ /* (1U << 31) is reserved for signed error codes */ /* + * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the + * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on + * the specific file. + */ +#define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) +#define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) +#define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) +#define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) + +/* + * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be + * used to clear any hints previously set. + */ +#define RWF_WRITE_LIFE_NOT_SET 0 +#define RWH_WRITE_LIFE_NONE 1 +#define RWH_WRITE_LIFE_SHORT 2 +#define RWH_WRITE_LIFE_MEDIUM 3 +#define RWH_WRITE_LIFE_LONG 4 +#define RWH_WRITE_LIFE_EXTREME 5 + +/* * Types of directory notifications that may be requested. */ #define DN_ACCESS 0x00000001 /* File accessed */ |