From: Tejun Heo <tj@kernel.org>
Date: Mon, 14 Jul 2008 05:59:30 +0000 (+0900)
Subject: [SCSI] sd: update index allocation and use ida instead of idr
X-Git-Tag: v2.6.27-rc1~55^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f27bac2761cab5a2e212dea602d22457a9aa6943;p=pandora-kernel.git

[SCSI] sd: update index allocation and use ida instead of idr

Update index allocation as follows.

* sd_index_idr is used only for ID allocation and mapping
  functionality is not used.  Use more memory efficient ida instead.

* idr and ida have their own locks inside them and don't need them for
  operation.  Drop it.

* index wasn't freed if probing failed after index allocation.  fix
  it.

* ida allocation should be repeated if it fails with -EAGAIN.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

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