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| author | J. Bruce Fields <bfields@fieldses.org> | 2006-11-14 15:51:40 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2007-07-18 19:14:47 -0400 |
| commit | f9ffed26d6f3e6ac9988947242821579d615fda7 (patch) | |
| tree | f7dc037b9b1a90511751532be5ebc47c820ed407 /include/linux/fs.h | |
| parent | a9933cea7a1d80dd9efae9f1acd857f5dce742b9 (diff) | |
| download | lwn-f9ffed26d6f3e6ac9988947242821579d615fda7.tar.gz lwn-f9ffed26d6f3e6ac9988947242821579d615fda7.zip | |
locks: provide a file lease method enabling cluster-coherent leases
Currently leases are only kept locally, so there's no way for a distributed
filesystem to enforce them against multiple clients. We're particularly
interested in the case of nfsd exporting a cluster filesystem, in which
case nfsd needs cluster-coherent leases in order to implement delegations
correctly.
Also add some documentation.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index a24f029accc0..c8ddf34e9710 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1122,6 +1122,7 @@ struct file_operations { int (*flock) (struct file *, int, struct file_lock *); ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int); + int (*setlease)(struct file *, long, struct file_lock **); }; struct inode_operations { |