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authorMarc Eshel <eshel@almaden.ibm.com>2006-11-28 16:27:06 -0500
committerJ. Bruce Fields <bfields@citi.umich.edu>2007-05-06 20:38:50 -0400
commit1a8322b2b02071b0c7ac37a28357b93e6362f13e (patch)
tree04fbdd52d8b3c2886d70b3739b9dff683aa79f02 /fs/gfs2/ops_file.c
parentf812048020282fdfa9b72a6cf539c33b6df1fd07 (diff)
lockd: add code to handle deferred lock requests
Rewrite nlmsvc_lock() to use the asynchronous interface. As with testlock, we answer nlm requests in nlmsvc_lock by first looking up the block and then using the results we find in the block if B_QUEUED is set, and calling vfs_lock_file() otherwise. If this a new lock request and we get -EINPROGRESS return on a non-blocking request then we defer the request. Also modify nlmsvc_unlock() to call the filesystem method if appropriate. Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/gfs2/ops_file.c')
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