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(parent: 78b42a8) | patch
rbd: acquire header_rwsem just once in rbd_queue_workfn()
authorIlya Dryomov <idryomov@gmail.com>
Wed, 12 Feb 2020 14:08:39 +0000 (15:08 +0100)
committerIlya Dryomov <idryomov@gmail.com>
Mon, 30 Mar 2020 10:42:40 +0000 (12:42 +0200)
commita52cc685753568e5bcbe762586c2bfbe7175255e
treea1550825ed173615dad5067d470e6b6fa1f5d29btree | snapshot
parent78b42a871a654face984c844b43c777d66adb1fecommit | diff
rbd: acquire header_rwsem just once in rbd_queue_workfn()

Currently header_rwsem is acquired twice: once in rbd_dev_parent_get()
when the image request is being created and then in rbd_queue_workfn()
to capture mapping_size and snapc.  Introduce rbd_img_capture_header()
and move image request allocation so that header_rwsem can be acquired
just once.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
drivers/block/rbd.c diff | blob | history
Domain: System / Kernel;