tree 2863a95901ab2e0677373ef5b62ecde51b05d32b
parent f142f08bf7ecc41c3e71e05b765ea654047cf0c0
author Sebastian Andrzej Siewior <bigeasy@linutronix.de> 1525444365 +0200
committer Jens Axboe <axboe@kernel.dk> 1525728396 -0600

block: don't disable interrupts during kmap_atomic()

bounce_copy_vec() disables interrupts around kmap_atomic(). This is a
leftover from the old kmap_atomic() implementation which relied on fixed
mapping slots, so the caller had to make sure that the same slot could not
be reused from an interrupting context.

kmap_atomic() was changed to dynamic slots long ago and commit 1ec9c5ddc17a
("include/linux/highmem.h: remove the second argument of k[un]map_atomic()")
removed the slot assignements, but the callers were not checked for now
redundant interrupt disabling.

Remove the conditional interrupt disable.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>