From: Lee Duncan <lduncan@suse.com>
To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Lee Duncan <lduncan@suse.com>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
Tejun Heo <tj@kernel.org>, Hannes Reinecke <hare@suse.com>,
Johannes Thumshirn <jthumshirn@suse.de>,
Christoph Hellwig <hch@infradead.org>
Subject: [PATCHv4 0/1] Update SCSI hosts to use ida for host number mgmt
Date: Wed, 7 Oct 2015 16:51:33 -0700 [thread overview]
Message-ID: <cover.1444241058.git.lduncan@suse.com> (raw)
This patch updates the SCSI hosts module to use the ida
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.
NOTE: it was not feasible to use idr_*() functions instead of
ida_*() functions, since using idr_find() without additional
locking to find our Scsi_Host structure left a window between
idr lookup and host structure deletion that would have
required additional locking to close.
Changes from v3:
- Switched from idr to ida since managing our instance
pointer required extra locking
Changes from v2 and v1:
- First two version used idr instead of ida
Lee Duncan (1):
SCSI: hosts: update to use ida_simple for host_no management
drivers/scsi/hosts.c | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
--
2.1.4
next reply other threads:[~2015-10-07 23:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-07 23:51 Lee Duncan [this message]
2015-10-07 23:51 ` [PATCHv4 1/1] SCSI: hosts: update to use ida_simple for host_no management Lee Duncan
2015-10-14 12:22 ` Johannes Thumshirn
2015-10-14 13:55 ` James Bottomley
2015-10-14 18:34 ` Lee Duncan
2015-10-14 18:53 ` James Bottomley
2015-10-14 21:21 ` Lee Duncan
2015-10-15 5:52 ` Hannes Reinecke
2015-10-16 20:03 ` Lee Duncan
2015-10-16 20:03 ` Lee Duncan
2015-10-16 20:14 ` Greg KH
2015-10-16 20:14 ` Greg KH
2015-11-12 16:31 ` Lee Duncan
2015-11-13 21:54 ` Martin K. Petersen
2015-11-16 12:10 ` Hannes Reinecke
2015-11-16 21:47 ` Lee Duncan
2015-11-17 23:20 ` Martin K. Petersen
2015-12-10 21:48 ` Lee Duncan
2015-12-11 15:31 ` Ewan Milne
2015-12-13 19:16 ` Lee Duncan
2015-12-14 15:07 ` Ewan Milne
2015-12-14 15:29 ` Hannes Reinecke
2015-12-14 15:29 ` Hannes Reinecke
2015-12-15 1:55 ` Martin K. Petersen
2015-12-17 19:24 ` Lee Duncan
2016-01-04 19:45 ` Lee Duncan
2016-01-05 23:53 ` Martin K. Petersen
2016-01-20 19:49 ` Lee Duncan
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