From: Sergei Trofimovich <slyfox@gentoo.org>
Date: Tue, 24 Apr 2012 19:59:16 +0000 (+0300)
Subject: btrfs: allow changing 'thread_pool' size at remount time
X-Git-Tag: v3.5-rc1~17^2~1^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d2450abfa359ff94a2bee64a7daeba68c346c81;p=pandora-kernel.git

btrfs: allow changing 'thread_pool' size at remount time

Changing 'mount -oremount,thread_pool=2 /' didn't make any effect:

maximum amount of worker threads is specified in 2 places:
- in 'strict btrfs_fs_info::thread_pool_size'
- in each worker struct: 'struct btrfs_workers::max_workers'

'mount -oremount' updated only 'btrfs_fs_info::thread_pool_size'.

Fix it by pushing new maximum value to all created worker structures
as well.

Cc: Josef Bacik <josef@redhat.com>
Cc: Chris Mason <chris.mason@oracle.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
---

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