604e688433
mail: The problem seems to originate with NFS's postop_attr information that is returned with a read or write RPC. Within a vm_fault context, the code cannot deal with vnode_pager_setsize() shrinking a vnode. The workaround in the patch below stops the nfsm_postop_attr() macro from ever shrinking a vnode. If the new size in the postop_attr information is smaller, then it just sets the nfsnode n_attrstamp to 0 to stop the wrong size getting used in the future. This change only affects postop_attr attributes; the nfsm_loadattr() macro works as normal. The change is implemented by adding a new argument to nfs_loadattrcache() called 'dontshrink'. When this is non-zero, nfs_loadattrcache() will never reduce the vnode/nfsnode size; instead it zeros n_attrstamp. There remain other was processes can get stuck in vmopar. Submitted by: Ian Dowse <iedowse@maths.tcd.ie> Reviewed by: dillon Tested by: Vadim Belman <voland@lflat.org> |
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|---|---|---|
| .. | ||
| nfs_serv.c | ||
| nfs_srvcache.c | ||
| nfs_srvsock.c | ||
| nfs_srvsubs.c | ||
| nfs_syscalls.c | ||
| nfs.h | ||
| nfsm_subs.h | ||
| nfsproto.h | ||
| nfsrvcache.h | ||
| nfsrvstats.h | ||