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pNFS/flexfiles: Fix an Oopsable condition when connection to the DS f…
…ails If the attempt to connect to a DS fails inside ff_layout_pg_init_read or ff_layout_pg_init_write, then we currently end up clearing the layout segment carried by the struct nfs_pageio_descriptor, causing an Oops when we later call into ff_layout_read_pagelist/ff_layout_write_pagelist. The fix is to ensure we return the layout and then retry. Fixes: 446ca21 ("pNFS/flexfiles: When initing reads or writes, we...") Cc: [email protected] # v4.7+ Signed-off-by: Trond Myklebust <[email protected]>
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