Hi,
Interested by the recent discussions concerning the copy_from_user()
function, I browsed the 2.6.11.7 kernel source, and came up with a few
questions.
1. Is there any particular reason why __copy_from_user_ll() is currently
EXPORT_SYMBOL()ed for i386? At least none of the in-tree modules
currently seem to use it, and __copy_from_user() seems like what most
would want anyway. If __copy_from_user_ll() is unexported, it looks like
we can eliminate the BUG_ON() statement within it.
2. Would it be possible to eliminate the might_sleep() call in
copy_from_user()? It seems that, very soon after, the __copy_from_user()
macro does another might_sleep(), with very few instructions in between.
But there might be some trick here that I'm missing.
Please enlighten. :-)
-Vadim Lobanov
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]