[GFS2] Fix race in logging code

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The log lock is dropped prior to io submittion, but
this exposes a hole in which the log data structures
may be going away due to a truncate.
Store the buffer head in a local pointer prior to
dropping the lock and relay on the buffer_head lock
for consitency on the buffer head.

Signed-Off-By: Russell Cattelan <cattelan@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

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Russell Cattelan 2006-11-09 11:28:08 -05:00 • committed by Steven Whitehouse

parent 9e2dbdac3d

commit 7020933156

1 changed files with 21 additions and 15 deletions

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36

fs/gfs2/lops.c

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