Konstantin Belousov 89672c6337 The ffs_balloc_ufs{1,2} functions call bdwrite() while having several ... vnode buffers locked at once. In particular, there are indirect buffers among locked ones. The bdwrite() may start the flushing to keep dirty buffer list at the bounds. If any buffer on the dirty list requires translation from logical to physical block number, code may ends up trying to lock an indirect buffer already locked in ffs_balloc_ufsX. Prevent the bdflush() activity when several buffers are locked at once by setting the TDP_INBDFUSH for the problematic code blocks. Reported and tested by: pho, Josef Buchsteiner at Juniper In collaboration with: kan MFC after: 1 month		2008-07-23 14:32:44 +00:00
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ffs	The ffs_balloc_ufs{1,2} functions call bdwrite() while having several	2008-07-23 14:32:44 +00:00
ufs