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author | Benny Halevy <bhalevy@panasas.com> | 2009-04-01 09:22:14 -0400 |
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committer | Benny Halevy <bhalevy@panasas.com> | 2009-06-17 10:46:37 -0700 |
commit | 510b81756f18922a4c5b555e8145f4fed5beb569 (patch) | |
tree | 9253ad2063b37292b3cf8c7425cbf6882807882a /Documentation/device-mapper | |
parent | ce5039c1be1fd04c2d9b1af80d41a6d003f2e20c (diff) |
nfs41: find slot
Find a free slot using bitmap-based allocation.
Use the optimized ffz function to find a zero bit
in the bitmap that indicates a free slot, starting
the search from the 'lowest_free_slotid' position.
If found, mark the slot as used in the bitmap, get
the slot's slotid and seqid, and update max_slotid
to be used by the SEQUENCE operation.
Also, update lowest_free_slotid for next search.
If no free slot was found the caller has to wait
for a free slot (outside the scope of this function)
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: find slot return slotid]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[use find_first_zero_bit for nfs4_find_slot as per review comment 21/85.]
[use NFS4_MAX_SLOT_TABLE rather than NFS4_NO_SLOT]
[nfs41: rpc_sleep_on slot_tbl_waitq must be called under slot_tbl_lock]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'Documentation/device-mapper')
0 files changed, 0 insertions, 0 deletions