Eric Lee / smarc-ti-linux-kernel

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Commit ed47b062ce9546fbe1eebf9da6937df4c5035372

Authored by Ming Chen
Committed by J. Bruce Fields
1 parent 4335723e8e
Exists in master and in 16 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-01.00.00, processor-sdk-linux-02.00.01, smarc-ti-linux-3.14.y, smarc-ti-linux-3.15.y, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04, ti-linux-3.14.y, ti-linux-3.15.y, ti-lsk-linux-4.1.y

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>

Showing 1 changed file with 1 additions and 0 deletions Side-by-side Diff

... ... @@ -3134,6 +3134,7 @@
3134 3134 goto out_no_deleg;
3135 3135 break;
3136 3136 case NFS4_OPEN_CLAIM_NULL:
  3137 + case NFS4_OPEN_CLAIM_FH:
3137 3138 /*
3138 3139 * Let's not give out any delegations till everyone's
3139 3140 * had the chance to reclaim theirs....