Module Name: src
Committed By: hannken
Date: Tue Nov 9 16:31:48 UTC 2010
Modified Files:
src/sys/miscfs/genfs: genfs_io.c
Log Message:
Genfs_getpages(): Break a deadlock where one thread runs VOP_GETPAGES(),
has busy pages and wants the wapbl lock as reader from wapbl_begin(),
another thread has the wapbl lock as reader and waits for a page from
the first thread. Now a third thread calls wapbl_flush() and wants the
wapbl lock as writer.
Move the wapbl_begin() up to a point where genfs_getpages() has no busy
pages yet.
To generate a diff of this commit:
cvs rdiff -u -r1.41 -r1.42 src/sys/miscfs/genfs/genfs_io.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
