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| author |   Ming Chen <mchen@cs.stonybrook.edu> | 2014-01-09 21:26:10 +0000 |
|---|---|---|
| committer |   J. Bruce Fields <bfields@redhat.com> | 2014-01-27 18:02:42 -0500 |
| commit | ed47b062ce9546fbe1eebf9da6937df4c5035372 (patch) | |
| tree | 46f007d5bbe868037232e6431ef794264df56491 /mm/page_io.c | |
| parent | nfsd4: fix delegation-unlink/rename race (diff) | |
| download | linux-dev-ed47b062ce9546fbe1eebf9da6937df4c5035372.tar.xz linux-dev-ed47b062ce9546fbe1eebf9da6937df4c5035372.zip | |
nfsd: consider CLAIM_FH when handing out delegation
CLAIM_FH was added by NFSv4.1. It is the same as CLAIM_NULL except that it
uses only current FH to identify the file to be opened.
The NFS client is using CLAIM_FH if the FH is available when opening a file.
Currently, we cannot get any delegation if we stat a file before open it
because the server delegation code does not recognize CLAIM_FH.
We tested this patch and found delegation can be handed out now when claim is
CLAIM_FH.
See http://marc.info/?l=linux-nfs&m=136369847801388&w=2 and
http://www.linux-nfs.org/wiki/index.php/Server_4.0_and_4.1_issues#New_open_claim_types
Signed-off-by: Ming Chen <mchen@cs.stonybrook.edu>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'mm/page_io.c')
0 files changed, 0 insertions, 0 deletions