lkml.org 
[lkml]   [2015]   [Oct]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCHv3 0/1] Update SCSI hosts to use idr for host number mgmt
Date
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



\
 
 \ /
  Last update: 2015-10-06 21:21    [W:0.597 / U:0.648 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site