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Message-ID: <5615B03E.6080302@suse.com> Date: Wed, 7 Oct 2015 16:52:30 -0700 From: Lee Duncan <lduncan@...e.com> To: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org Cc: 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: Re: [PATCHv3 0/1] Update SCSI hosts to use idr for host number mgmt Duplicate email, please ignore On 10/07/2015 04:47 PM, Lee Duncan wrote: > 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(-) > -- Lee Duncan SUSE Labs -- 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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