tree 11a5fc7993ba9ae343fc72f03f9a11f312fd6128
parent 0820ab517e1b100ee3f9584ec27f93309689ebe7
author Steven Whitehouse <swhiteho@redhat.com> 1188813693 +0100
committer Steven Whitehouse <swhiteho@redhat.com> 1192002972 +0100

[GFS2] Clean up gfs2_trans_add_revoke()

The following alters gfs2_trans_add_revoke() to take a struct
gfs2_bufdata as an argument. This eliminates the memory allocation which
was previously required by making use of the already existing struct
gfs2_bufdata. It makes some sanity checks to ensure that the
gfs2_bufdata has been removed from all the lists before its recycled as
a revoke structure. This saves one memory allocation and one free per
revoke structure.

Also as a result, and to simplify the locking, since there is no longer
any blocking code in gfs2_trans_add_revoke() we must hold the log lock
whenever this function is called. This reduces the amount of times we
take and unlock the log lock.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>