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| author |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-04-27 13:48:18 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-01 15:42:43 -0400 |
| commit | 3a1556e8662cc425c433b463fcdae138908ca467 (patch) | |
| tree | c4c16f7e33612c3ce3b504e9eedbf336d0c4bf20 /fs/nfs/internal.h | |
| parent | NFS: Change attribute updates should set NFS_INO_REVAL_PAGECACHE (diff) | |
| download | linux-dev-3a1556e8662cc425c433b463fcdae138908ca467.tar.xz linux-dev-3a1556e8662cc425c433b463fcdae138908ca467.zip | |
NFSv2/v3: Simulate the change attribute
Use the ctime to simulate a change attribute for NFSv2 and NFSv3.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/internal.h')
| -rw-r--r-- | fs/nfs/internal.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 0fd1efaf1cff..1855e8fea423 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -493,3 +493,15 @@ unsigned int nfs_page_array_len(unsigned int base, size_t len) PAGE_SIZE - 1) >> PAGE_SHIFT; } +/* + * Convert a struct timespec into a 64-bit change attribute + * + * This does approximately the same thing as timespec_to_ns(), + * but for calculation efficiency, we multiply the seconds by + * 1024*1024*1024. + */ +static inline +u64 nfs_timespec_to_change_attr(const struct timespec *ts) +{ + return ((u64)ts->tv_sec << 30) + ts->tv_nsec; +} |