[PATCH] reduce stack use in altroot handling
Massaged altroot handling to avoid on-stack struct nameidata instance (and got it faster, actually). We are in the middle of do_follow_link() recursion here, so the stack footprint is critical. Signed-off-by: Al Viro <viro@parcelfarce.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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