Hugh Dickins: > LTP's iogen01 doio tests used to hang nicely on 32-bit SMP when /tmp was a > unionfs mount of a tmpfs, i_size_read spinning forever, waiting for a lost > seqcount update: fixed by taking i_lock around i_size_write when 32-bit SMP. I don't know why dst->i_lock is affected by src->i_size_seqcount. Do you mean that your test issued write(2) to the lower/actual file so frequently that i_size_read() in unionfs always failed? Is your test iogen01 export LTPROOT; rwtest -N iogen01 -i 120s -s read,write -Da -Dv -n 2 500b:doio.f1.$$ 1000b:doio.f2.$$ line in runtest/fs? Junjiro Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
