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| author |   Jeff Layton <jlayton@poochiereds.net> | 2015-12-10 10:41:58 -0500 |
|---|---|---|
| committer |   Trond Myklebust <trond.myklebust@primarydata.com> | 2015-12-28 09:57:14 -0500 |
| commit | 9a4bf31d05a801e2358d96f69b39fb8ce2c69dd8 (patch) | |
| tree | c132b620128e2035a56baa9b3314d0aaf909647b /include/linux/nfs4.h | |
| parent | Adding tracepoint to cached open (diff) | |
| download | wireguard-linux-9a4bf31d05a801e2358d96f69b39fb8ce2c69dd8.tar.xz wireguard-linux-9a4bf31d05a801e2358d96f69b39fb8ce2c69dd8.zip | |
nfs: add new tracepoint for pnfs_update_layout
pnfs_update_layout is really the "nexus" of layout handling. If it
returns NULL then we end up going through the MDS. This patch adds
some tracepoints to that function that allow us to determine the
cause when we end up going through the MDS unexpectedly.
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'include/linux/nfs4.h')
| -rw-r--r-- | include/linux/nfs4.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index e7e78537aea2..0e30f2c5ff49 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -592,4 +592,18 @@ enum data_content4 { NFS4_CONTENT_HOLE = 1, }; +enum pnfs_update_layout_reason { + PNFS_UPDATE_LAYOUT_UNKNOWN = 0, + PNFS_UPDATE_LAYOUT_NO_PNFS, + PNFS_UPDATE_LAYOUT_RD_ZEROLEN, + PNFS_UPDATE_LAYOUT_MDSTHRESH, + PNFS_UPDATE_LAYOUT_NOMEM, + PNFS_UPDATE_LAYOUT_BULK_RECALL, + PNFS_UPDATE_LAYOUT_IO_TEST_FAIL, + PNFS_UPDATE_LAYOUT_FOUND_CACHED, + PNFS_UPDATE_LAYOUT_RETURN, + PNFS_UPDATE_LAYOUT_BLOCKED, + PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET, +}; + #endif |