CVS commit: src/sys/fs/puffs

[Antti Kantee <pooka%netbsd.org@localhost>]

Module Name:    src
Committed By:   pooka
Date:           Mon Dec  7 20:57:55 UTC 2009

Modified Files:
        src/sys/fs/puffs: puffs_msgif.c puffs_sys.h puffs_vfsops.c

Log Message:
Process flush requests from the file server in a separate thread
context.  This fixes a long-standing but seldomly seen deadlock,
where the kernel was holding pages busy (due to e.g. readahead
request) while waiting for the server to respond, and the server
made a callback into the kernel asking to invalidate those pages.
... or, well, theoretically fixes, since I didn't have any reliable
way of repeating the deadlock and I think I saw it only twice.


To generate a diff of this commit:
cvs rdiff -u -r1.75 -r1.76 src/sys/fs/puffs/puffs_msgif.c
cvs rdiff -u -r1.72 -r1.73 src/sys/fs/puffs/puffs_sys.h
cvs rdiff -u -r1.83 -r1.84 src/sys/fs/puffs/puffs_vfsops.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.