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Message-Id: <cover.1444157464.git.lduncan@suse.com> Date: Wed, 7 Oct 2015 16:47:23 -0700 From: Lee Duncan <lduncan@...e.com> To: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Lee Duncan <lduncan@...e.com>, James Bottomley <James.Bottomley@...senPartnership.com>, Tejun Heo <tj@...nel.org>, Hannes Reinecke <hare@...e.com>, Johannes Thumshirn <jthumshirn@...e.de>, Christoph Hellwig <hch@...radead.org> Subject: [PATCHv3 0/1] Update SCSI hosts to use idr for host number mgmt This patch updates the SCSI hosts module to use the idr index-management routines to manage its host_no index instead of using an ATOMIC integer. This means that host numbers can now be reclaimed and re-used. It also updates the hosts module to use the idr routine idr_find() to lookup hosts based on the host number, hopefully speeding up said lookup. After noticing that my idr calling sequences where very close to those in other modules, I considered creating some idr helper functions (and using them), but because idr usage almost always requires the caller to manage their own locks, I gave up on this approach (as suggested by Tejon -- thank you). Changes from v1: - no longer using helper routines Changes from v2: - added back missing scsi_host_get() in scsi_host_lookup() Lee Duncan (1): SCSI: update hosts module to use idr index management drivers/scsi/hosts.c | 61 ++++++++++++++++++++++++++-------------------------- 1 file changed, 31 insertions(+), 30 deletions(-) -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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