tree e4cc282e692560897c42c5fbc8df227d5da669d4
parent 6072d13c429373c5d63b69dadbbef40a9b035552
author Trond Myklebust <Trond.Myklebust@netapp.com> 1291231026 -0500
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1291301880 -0500

NFS: Fix a memory leak in nfs_readdir

We need to ensure that the entries in the nfs_cache_array get cleared
when the page is removed from the page cache. To do so, we use the
freepage address_space operation.

Change nfs_readdir_clear_array to use kmap_atomic(), so that the
function can be safely called from all contexts.

Finally, modify the cache_page_release helper to call
nfs_readdir_clear_array directly, when dealing with an anonymous
page from 'uncached_readdir'.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>