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[PATCH] uml: switch_mm fix

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Not quite, something along the lines of the patch below works correctly (and
makes aio performance not suffer from multiple second delays), as skas0 mode
correctly switches mm contexts, unlike TT (which should probably get nuked
from the kernel now that skas0 seems to be working).

Signed-off-by: Benjamin LaHaise <[email protected]>
Signed-off-by: Jeff Dike <[email protected]>
Cc: Paolo Giarrusso <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ben Lahaise 2005-11-07 00:58:52 -08:00 • committed by Linus Torvalds
commit e763b793f7
1 changed files with 2 additions and 1 deletions
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3
include/asm-um/mmu_context.h
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@ -29,7 +29,8 @@ static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
* possible.
*/
if (old != new && (current->flags & PF_BORROWED_MM))
force_flush_all();
CHOOSE_MODE(force_flush_all(),
switch_mm_skas(&new->context.skas.id));
}
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,