Browse code
Aufs: reduce redundant parsing of mountinfo
Check whether or not the file system type of a mountpoint is aufs
by calling statfs() instead of parsing mountinfo. This assumes
that aufs graph driver does not allow aufs as a backing file
system.
Signed-off-by: Tatsushi Inagaki <e29253@jp.ibm.com>
Tatsushi Inagaki authored on 2016/02/29 17:42:24Showing 1 changed files
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@@ -468,7 +468,11 @@ func (a *Driver) unmount(m *data) error {
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} |
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func (a *Driver) mounted(m *data) (bool, error) {
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- return mountpk.Mounted(m.path) |
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+ var buf syscall.Statfs_t |
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+ if err := syscall.Statfs(m.path, &buf); err != nil {
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+ return false, nil |
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+ } |
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+ return graphdriver.FsMagic(buf.Type) == graphdriver.FsMagicAufs, nil |
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} |
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// Cleanup aufs and unmount all mountpoints |