pNFS: Fix a memory leak when attempted pnfs fails
commit 1ca018d2 upstream. pnfs_do_write() expects the call to pnfs_write_through_mds() to free the pgio header and to release the layout segment before exiting. The problem is that nfs_pgio_data_destroy() doesn't actually do this; it only frees the memory allocated by nfs_generic_pgio(). Ditto for pnfs_do_read()... Fix in both cases is to add a call to hdr->release(hdr). Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
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