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| author |   Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-05-07 10:06:13 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-06-13 19:36:28 -0400 |
| commit | e93a5e9306a576011f03011b492d4fbaa274477b (patch) | |
| tree | 216480ad1398644a7a3e68181238e36a2f512dc5 /fs/nfs/nfs4file.c | |
| parent | NFSv4: Add lease breakpoints in case of a delegation recall or return (diff) | |
| download | linux-dev-e93a5e9306a576011f03011b492d4fbaa274477b.tar.xz linux-dev-e93a5e9306a576011f03011b492d4fbaa274477b.zip | |
NFSv4: Add support for application leases underpinned by a delegation
If the NFSv4 client already holds a delegation for a file, then we can
support application leases (i.e. fcntl(fd, F_SETLEASE,...)) because the
underlying delegation guarantees that the file is not being modified on
the server by another client in a way that might conflict with the lease
guarantees.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/nfs4file.c')
| -rw-r--r-- | fs/nfs/nfs4file.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index a1e5c6b85ded..c820de58a661 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -435,6 +435,12 @@ void nfs42_ssc_unregister_ops(void) } #endif /* CONFIG_NFS_V4_2 */ +static int nfs4_setlease(struct file *file, long arg, struct file_lock **lease, + void **priv) +{ + return nfs4_proc_setlease(file, arg, lease, priv); +} + const struct file_operations nfs4_file_operations = { .read_iter = nfs_file_read, .write_iter = nfs_file_write, @@ -448,7 +454,7 @@ const struct file_operations nfs4_file_operations = { .splice_read = generic_file_splice_read, .splice_write = iter_file_splice_write, .check_flags = nfs_check_flags, - .setlease = simple_nosetlease, + .setlease = nfs4_setlease, #ifdef CONFIG_NFS_V4_2 .copy_file_range = nfs4_copy_file_range, .llseek = nfs4_file_llseek, |