Linux 4.18 compat: inode timespec -> timespec64

Commit torvalds/linux@95582b0 changes the inode i_atime, i_mtime,
and i_ctime members form timespec's to timespec64's to make them
2038 safe.  As part of this change the current_time() function was
also updated to return the timespec64 type.

Resolve this issue by introducing a new inode_timespec_t type which
is defined to match the timespec type used by the inode.  It should
be used when working with inode timestamps to ensure matching types.

The timestruc_t type under Illumos was used in a similar fashion but
was specified to always be a timespec_t.  Rather than incorrectly
define this type all timespec_t types have been replaced by the new
inode_timespec_t type.

Finally, the kernel and user space 'sys/time.h' headers were aligned
with each other.  They define as appropriate for the context several
constants as macros and include static inline implementation of
gethrestime(), gethrestime_sec(), and gethrtime().

Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7643
This commit is contained in:
Brian Behlendorf
2018-06-19 21:51:18 -07:00
committed by GitHub
parent aeb39df726
commit 6413c95fbd
27 changed files with 134 additions and 143 deletions
+25 -8
View File
@@ -291,19 +291,36 @@ zfs_inherit_projid(znode_t *dzp)
extern unsigned int zfs_object_mutex_size;
/* Encode ZFS stored time values from a struct timespec */
/*
* Encode ZFS stored time values from a struct timespec / struct timespec64.
*/
#define ZFS_TIME_ENCODE(tp, stmp) \
{ \
do { \
(stmp)[0] = (uint64_t)(tp)->tv_sec; \
(stmp)[1] = (uint64_t)(tp)->tv_nsec; \
}
} while (0)
/* Decode ZFS stored time values to a struct timespec */
#if defined(HAVE_INODE_TIMESPEC64_TIMES)
/*
* Decode ZFS stored time values to a struct timespec64
* 4.18 and newer kernels.
*/
#define ZFS_TIME_DECODE(tp, stmp) \
{ \
(tp)->tv_sec = (time_t)(stmp)[0]; \
(tp)->tv_nsec = (long)(stmp)[1]; \
}
do { \
(tp)->tv_sec = (time64_t)(stmp)[0]; \
(tp)->tv_nsec = (long)(stmp)[1]; \
} while (0)
#else
/*
* Decode ZFS stored time values to a struct timespec
* 4.17 and older kernels.
*/
#define ZFS_TIME_DECODE(tp, stmp) \
do { \
(tp)->tv_sec = (time_t)(stmp)[0]; \
(tp)->tv_nsec = (long)(stmp)[1]; \
} while (0)
#endif /* HAVE_INODE_TIMESPEC64_TIMES */
/*
* Timestamp defines