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CVS commit: src/sys/ufs/ffs

Module Name:    src
Committed By:   hannken
Date:           Thu Jul 31 09:35:09 UTC 2008

Modified Files:
        src/sys/ufs/ffs: ffs_alloc.c

Log Message:
Resolve a deadlock when fs_nodealloccg() initializes more inodes on
an UFS2 file system.  With the current cylinder group buffer busy it
calls ffs_getblk().  This runs through copy-on-write and may need the
current cylinder group buffer to allocate a new block for the snapshot.

While here write the cylinder group buffer synchronously after
cg_initediblk was changed because fsck_ffs will trust it.

Reviewed by: Jason Thorpe <>

To generate a diff of this commit:
cvs rdiff -r1.111 -r1.112 src/sys/ufs/ffs/ffs_alloc.c

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

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