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authorJ. Bruce Fields <bfields@citi.umich.edu>2007-02-21 00:58:50 -0500
committerJ. Bruce Fields <bfields@citi.umich.edu>2007-05-06 18:06:44 -0400
commit3ee17abd14c728d4e0ca7a991c58f2250cb091af (patch)
tree6f49a9893dc656fac4d5a334946ccbf4e911891f /include
parent9d6a8c5c213e34c475e72b245a8eb709258e968c (diff)
downloadop-kernel-dev-3ee17abd14c728d4e0ca7a991c58f2250cb091af.zip
op-kernel-dev-3ee17abd14c728d4e0ca7a991c58f2250cb091af.tar.gz
locks: factor out generic/filesystem switch from test_lock
Factor out the code that switches between generic and filesystem-specific lock methods; eventually we want to call this from lock managers (lockd and nfsd) too; currently they only call the generic methods. This patch does that for test_lock. Note that this hasn't been necessary until recently, because the few filesystems that define ->lock() (nfs, cifs...) aren't exportable via NFS. However GFS (and, in the future, other cluster filesystems) need to implement their own locking to get cluster-coherent locking, and also want to be able to export locking to NFS (lockd and NFSv4). So we accomplish this by factoring out code such as this and exporting it for the use of lockd and nfsd. 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 9e1ddff..2a2a439 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -856,6 +856,7 @@ extern int posix_lock_file_conf(struct file *, struct file_lock *, struct file_l
extern int posix_lock_file(struct file *, struct file_lock *);
extern int posix_lock_file_wait(struct file *, struct file_lock *);
extern int posix_unblock_lock(struct file *, struct file_lock *);
+extern int vfs_test_lock(struct file *, struct file_lock *);
extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
extern int __break_lease(struct inode *inode, unsigned int flags);
extern void lease_get_mtime(struct inode *, struct timespec *time);
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