devtmpfs [censored] oddities

From: Al Viro
Date: Wed Dec 16 2009 - 03:04:38 EST


May I respectfully suggest that a blocking operation (such as
kstrdup with GFP_KERNEL, or grabbing a mutex, or, say it, pathname resolution)
is not quite the thing to do while holding an rwlock?

As it is, any device_add() is an embarrassingly obvious deadlock
waiting to happen...
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