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daemon.setMounts(): copy slice in place

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It does not make sense to copy a slice element by element, then discard
the source one. Let's do copy in place instead which is way more
efficient.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Upstream-commit: d4c94e83ca58b5ffd99840a8e3cbf22f1ab331c0
Component: engine
This commit is contained in:
Kir Kolyshkin
2017-08-17 14:48:11 +03:00
parent 61575cffdb
commit b2b2305fac
1 changed files with 1 additions and 1 deletions
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2
components/engine/daemon/oci_linux.go
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@ -533,7 +533,7 @@ func setMounts(daemon *Daemon, s *specs.Spec, c *container.Container, mounts []c
// - /dev/shm, in case IpcMode is none.
// While at it, also
// - set size for /dev/shm from shmsize.
var defaultMounts []specs.Mount
defaultMounts := s.Mounts[:0]
_, mountDev := userMounts["/dev"]
for _, m := range s.Mounts {
if _, ok := userMounts[m.Destination]; ok {