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| author | SeongJae Park <sjpark@amazon.de> | 2020-01-27 09:18:09 +0100 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2020-01-29 07:35:49 -0600 |
| commit | 060eabe8fbe726aca341b518366da4d79e338100 (patch) | |
| tree | de0003cb6dc543be114115605aae0f3e518803ac /drivers/block/xen-blkback | |
| parent | 8a105678fb3ec4763352db84745968bf2cb4aa65 (diff) | |
| download | linux-060eabe8fbe726aca341b518366da4d79e338100.tar.gz linux-060eabe8fbe726aca341b518366da4d79e338100.tar.bz2 linux-060eabe8fbe726aca341b518366da4d79e338100.zip | |
xenbus/backend: Protect xenbus callback with lock
A driver's 'reclaim_memory' callback can race with 'probe' or 'remove'
because it will be called whenever memory pressure is detected. To
avoid such race, this commit embeds a spinlock in each 'xenbus_device'
and make 'xenbus' to hold the lock while the corresponded callbacks are
running.
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/block/xen-blkback')
0 files changed, 0 insertions, 0 deletions