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authorDavid Howells <dhowells@redhat.com>2009-04-03 19:42:39 +0400
committerDavid Howells <dhowells@redhat.com>2009-04-03 19:42:39 +0400
commit385e1ca5f21c4680ad6a46a3aa2ea8af99e99c92 (patch)
tree7d887b59d943c5dd62c9604b7ea37fd2d650df71 /fs/cachefiles/xattr.c
parentb510882281d56873e1194021643b7c325336f84f (diff)
downloadlinux-385e1ca5f21c4680ad6a46a3aa2ea8af99e99c92.tar.xz
CacheFiles: Permit the page lock state to be monitored
Add a function to install a monitor on the page lock waitqueue for a particular page, thus allowing the page being unlocked to be detected. This is used by CacheFiles to detect read completion on a page in the backing filesystem so that it can then copy the data to the waiting netfs page. Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Steve Dickson <steved@redhat.com> Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Tested-by: Daire Byrne <Daire.Byrne@framestore.com>
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