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authorJ. Bruce Fields <bfields@fieldses.org>2006-11-14 23:51:40 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2007-07-19 03:14:47 +0400
commitf9ffed26d6f3e6ac9988947242821579d615fda7 (patch)
treef7dc037b9b1a90511751532be5ebc47c820ed407 /include
parenta9933cea7a1d80dd9efae9f1acd857f5dce742b9 (diff)
downloadlinux-f9ffed26d6f3e6ac9988947242821579d615fda7.tar.xz
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')
-rw-r--r--include/linux/fs.h1
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 {