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4.0 NFS client in infinite loop in state recovery after getting BAD_STATEID

Message ID CAN-5tyHKh0kFDqmq_9ZyTmzmMx33f2wixrWBpi5hx=YXF0kihg@mail.gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Olga Kornievskaia May 15, 2015, 3:52 p.m. UTC
Here's another version:

Problem: When an operation like WRITE receives a BAD_STATEID, even though
recovery code clears the RECLAIM_NOGRACE recovery flag before recovering
the open state, because of clearing delegation state for the associated
inode, nfs_inode_find_state_and_recover() gets called and it marks the
same state with RECLAIM_NOGRACE flag again. As a results, when we restart
looking over the open states, we end up in the infinite loop instead of
breaking out in the next test of state flags.

Solution: unset the RECLAIM_NOGRACE set because of
calling of nfs_inode_find_state_and_recover() after returning from calling
recover_open() function.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
 fs/nfs/nfs4state.c | 2 ++
 1 file changed, 2 insertions(+)
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diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 2782cfc..e99e1f0 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1482,6 +1482,8 @@  restart:
+                               test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE,
+                                       &state->flags);
                                goto restart;