From a8ce377a5db8d32b08c3bcc1c5d70cad64a0b21d Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sat, 17 Sep 2016 18:17:35 -0400 Subject: [PATCH] nfs: track whether server sets MAY_NOTIFY_LOCK flag We want to handle the two cases differently, such that we poll more aggressively when we don't expect a callback. Signed-off-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 804113421337..55cfeadedb6e 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -157,6 +157,7 @@ enum { NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ + NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */ }; struct nfs4_state { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0aac0fbf0b58..93cf38e8098a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2537,6 +2537,8 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, goto out; if (server->caps & NFS_CAP_POSIX_LOCK) set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); + if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK) + set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags); dentry = opendata->dentry; if (d_really_is_negative(dentry)) { -- 2.20.1