tree a041e219fe6342d6268d71581d94c02073f681f6
parent 8236554a27af870ecd1cd588d9558ccdc212037b
author Hillf Danton <dhillf@gmail.com> 1291162697 -0800
committer James Bottomley <James.Bottomley@suse.de> 1292955859 -0600

[SCSI] libfc: tune fc_exch_em_alloc() to be O(2)

For allocating new exch from pool,  scanning for free slot in exch
array fluctuates when exch pool is close to exhaustion.

The fluctuation is smoothed, and the scan looks to be O(2).

Signed-off-by: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>