]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
block: don't disable interrupts during kmap_atomic()
authorSebastian Andrzej Siewior <bigeasy@linutronix.de>
Fri, 4 May 2018 14:32:45 +0000 (16:32 +0200)
committerJens Axboe <axboe@kernel.dk>
Mon, 7 May 2018 21:26:36 +0000 (15:26 -0600)
commitf3a1075e5fc3434f1b7af601180dd976b754ec0c
tree2863a95901ab2e0677373ef5b62ecde51b05d32b
parentf142f08bf7ecc41c3e71e05b765ea654047cf0c0
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>
block/bounce.c