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NFS: Add a tracepoint to show the results of nfs_set_cache_invalid()

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[ Upstream commit 93c2e5e0a9 ]

This provides some insight into the client's invalidation behavior to show
both when the client uses the helper, and the results of calling the
helper which can vary depending on how the helper is called.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Stable-dep-of: 867da60d46 ("nfs: avoid i_lock contention in nfs_clear_invalid_mapping")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Benjamin Coddington
2021-11-16 08:49:24 -05:00
committed by Greg Kroah-Hartman
parent c4be3004fd
commit 80ca099223
2 changed files with 2 additions and 0 deletions
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fs/nfs/inode.c
+1
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@@ -219,6 +219,7 @@ void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
NFS_INO_DATA_INVAL_DEFER);
else if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
nfsi->cache_validity &= ~NFS_INO_DATA_INVAL_DEFER;
trace_nfs_set_cache_invalid(inode, 0);
}
EXPORT_SYMBOL_GPL(nfs_set_cache_invalid);
fs/nfs/nfstrace.h
+1
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@@ -162,6 +162,7 @@ DEFINE_NFS_INODE_EVENT_DONE(nfs_writeback_inode_exit);
DEFINE_NFS_INODE_EVENT(nfs_fsync_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_fsync_exit);
DEFINE_NFS_INODE_EVENT(nfs_access_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_set_cache_invalid);
TRACE_EVENT(nfs_access_exit,
TP_PROTO(