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| author | Joseph Qi <[email protected]> | 2014-09-25 23:05:16 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-09-26 15:10:34 +0000 |
| commit | 5760a97c7143c208fa3a8f8cad0ed7dd672ebd28 (patch) | |
| tree | 5fa9d3345390c8d86f7768ee6d04d2520d4c28f5 /lib/genalloc.c | |
| parent | nilfs2: fix data loss with mmap() (diff) | |
| download | kernel-5760a97c7143c208fa3a8f8cad0ed7dd672ebd28.tar.gz kernel-5760a97c7143c208fa3a8f8cad0ed7dd672ebd28.zip | |
ocfs2/dlm: do not get resource spinlock if lockres is new
There is a deadlock case which reported by Guozhonghua:
https://oss.oracle.com/pipermail/ocfs2-devel/2014-September/010079.html
This case is caused by &res->spinlock and &dlm->master_lock
misordering in different threads.
It was introduced by commit 8d400b81cc83 ("ocfs2/dlm: Clean up refmap
helpers"). Since lockres is new, it doesn't not require the
&res->spinlock. So remove it.
Fixes: 8d400b81cc83 ("ocfs2/dlm: Clean up refmap helpers")
Signed-off-by: Joseph Qi <[email protected]>
Reviewed-by: joyce.xue <[email protected]>
Reported-by: Guozhonghua <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Mark Fasheh <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/genalloc.c')
0 files changed, 0 insertions, 0 deletions