.hgtags
author Durham Goode <durham@fb.com>
Thu, 11 Feb 2016 17:04:33 -0800
changeset 28087 0b7ce0b16d8a
parent 27978 87449bc35209
child 28290 9a7c27ba166b
permissions -rw-r--r--
pathauditor: change parts verification order to be root first Previously, when we verified the parts of a path in the auditor, we would validate the deepest directory first, then it's parent, and so on up to the root. If there happened to be a symlink in the chain, that meant our first check would likely traverse that symlink. In some cases that symlink might point to a network filesystem that is expensive, and therefore this simple check could be very slow. The fix is to check the path parts starting at the root and working our way down. This has a minor performance difference in that we used to be able to short circuit from the audit if we reached a directory that had already been checked. Now we can't, but the cost is N dictionary look ups, where N is the number of parts in the path, which should be fairly minor.

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