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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-06-08 17:08:28 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2016-06-22 09:59:42 -0400 |
| commit | ca0daa277acac1029f74d9fea838c9e507398226 (patch) | |
| tree | 1efc578e5b1c814940cb6393d541a7919e9a94bc /fs/nfs/file.c | |
| parent | 57b691819ee2b095da505b34abdcd3193d0af75c (diff) | |
| download | linux-ca0daa277acac1029f74d9fea838c9e507398226.tar.bz2 | |
NFS: Cache aggressively when file is open for writing
Unless the user is using file locking, we must assume close-to-open
cache consistency when the file is open for writing. Adjust the
caching algorithm so that it does not clear the cache on out-of-order
writes and/or attribute revalidations.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/file.c')
| -rw-r--r-- | fs/nfs/file.c | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 717a8d6af52d..2d39d9f9da7d 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -780,11 +780,6 @@ do_unlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) } static int -is_time_granular(struct timespec *ts) { - return ((ts->tv_sec == 0) && (ts->tv_nsec <= 1000)); -} - -static int do_setlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) { struct inode *inode = filp->f_mapping->host; @@ -817,12 +812,8 @@ do_setlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) * This makes locking act as a cache coherency point. */ nfs_sync_mapping(filp->f_mapping); - if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) { - if (is_time_granular(&NFS_SERVER(inode)->time_delta)) - __nfs_revalidate_inode(NFS_SERVER(inode), inode); - else - nfs_zap_caches(inode); - } + if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ)) + nfs_zap_mapping(inode, filp->f_mapping); out: return status; } |