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CVS commit: src/sys/kern

Module Name:    src
Committed By:   christos
Date:           Sat Dec 29 21:56:04 UTC 2012

Modified Files:
        src/sys/kern: vfs_bio.c

Log Message:
Always call brelse() on error. Otherwise a possible error from bread() will
cause the buffer to stay lock and we end up blocking forever in
VOP_CLOSE->spec_close->vinvalbuf->bbysy since the buffer is marked busy
but there is no I/O pending.
This caused my laptop to hang on boot_findwedge because:
    findroot: unable to read block 358331527 of dev dk0 (22)

To generate a diff of this commit:
cvs rdiff -u -r1.240 -r1.241 src/sys/kern/vfs_bio.c

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

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