CVS commit: [netbsd-6] src/sys/fs/msdosfs

["Jeff Rizzo" <riz%netbsd.org@localhost>]

Module Name:    src
Committed By:   riz
Date:           Mon Apr 16 15:37:12 UTC 2012

Modified Files:
        src/sys/fs/msdosfs [netbsd-6]: msdosfs_fat.c

Log Message:
Pull up following revision(s) (requested by hannken in ticket #183):
        sys/fs/msdosfs/msdosfs_fat.c: revision 1.20
pcbmap(): We cannot use bread() here as for the pagedaemon getblk()
may fail leading to a panic in bread().
Replace bread() with getblk() / VOP_STRATEGY() and return
an error if getblk() fails.

Fixes PR#46282: 6.0_BETA crash: msdosfs_bmap -> pcbmap -> bread ->
bio_doread

This is an interim solution for easy pullup.  The final solution
is be to change bread() to not return a buffer on error.  As
we have to change all callers of bread() this will not qualify
for a pullup.


To generate a diff of this commit:
cvs rdiff -u -r1.19 -r1.19.18.1 src/sys/fs/msdosfs/msdosfs_fat.c

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