From 908790fa3b779d37365e6b28e3aa0f6e833020c3 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 17 Feb 2014 17:58:42 -0500 Subject: [PATCH] dcache: d_splice_alias mustn't create directory aliases Currently if d_splice_alias finds a directory with an alias that is not IS_ROOT or not DCACHE_DISCONNECTED, it creates a duplicate directory. Duplicate directory dentries are unacceptable; it is better just to error out. (In the case of a local filesystem the most likely case is filesystem corruption: for example, perhaps two directories point to the same child directory, and the other parent has already been found and cached.) Note that distributed filesystems may encounter this case in normal operation if a remote host moves a directory to a location different from the one we last cached in the dcache. For that reason, such filesystems should instead use d_materialise_unique, which tries to move the old directory alias to the right place instead of erroring out. Signed-off-by: J. Bruce Fields Signed-off-by: Al Viro --- Reading git-format-patch failed