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Unionfs: prevent deadlock in cache coherency
authorErez Zadok <ezk@cs.sunysb.edu>
Fri, 21 Dec 2007 04:08:13 +0000 (23:08 -0500)
committerErez Zadok <ezk@cs.sunysb.edu>
Fri, 22 Nov 2013 23:55:04 +0000 (18:55 -0500)
commiteb0532da4a559d8e5b8ea102a5a6eef7c8ee7257
tree30ba18fd457bfcc3b51bab07bb0ccd1617e44b70tree | snapshot
parent6ee38cfbe1c0212e8435416ccc30c4e473c81bd8commit | diff
Unionfs: prevent deadlock in cache coherency

Don't try to truncate_inode_pages in in purge_inode_data, because this could
lead to a deadlock between some of address_space ops and dentry
revalidation: the address space op is invoked with a lock on our own page,
and truncate_inode_pages will block on locked pages.  Instead, it should be
enough to be gentler and just invalidate_mapping_pages.

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
fs/unionfs/dentry.c diff | blob | history
unionfs2-2.6.27.y