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H A D | dir.c | 8cbdf1e6 Fri Jan 06 02:19:38 CST 2006 Miklos Szeredi <miklos@szeredi.hu> [PATCH] fuse: support caching negative dentries
Add support for caching negative dentries.
Up till now, ->d_revalidate() always forced a new lookup on these. Now let the lookup method return a zero node ID (not used for anything else) meaning a negative entry, but with a positive cache timeout. The old way of signaling negative entry (replying ENOENT) still works.
Userspace should check the ABI minor version to see whether sending a zero ID is allowed by the kernel or not.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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