nvme: only reconfigure discard if necessary

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Currently nvme reconfigures discard for every disk revalidation. This
is problematic because any O_WRONLY or O_RDWR open will trigger a
partition scan through udev/systemd, and we will reconfigure discard.
This blows away any user settings, like discard_max_bytes.

Only re-configure the user settable settings if we need to.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
[removed redundant queue flag setting]
Signed-off-by: Keith Busch <keith.busch@intel.com>

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Jens Axboe 2018-05-02 11:06:54 -06:00 • committed by Keith Busch

parent 1811977568

commit 3831761eb8

1 changed files with 16 additions and 12 deletions

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28

drivers/nvme/host/core.c

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