Messages in this thread | | | Date | Mon, 30 Dec 2013 11:18:15 -0800 | From | Dave Hansen <> | Subject | Re: [PATCH 0/3] Fadvise: Directory level page cache cleaning support |
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On 12/30/2013 05:45 AM, Li Wang wrote: > This patch extends 'fadvise' to support directory level page cache > cleaning. The call to posix_fadvise(fd, 0, 0, POSIX_FADV_DONTNEED) > with 'fd' referring to a directory will recursively reclaim page cache > entries of files inside 'fd'. For secruity concern, those inodes > which the caller does not own appropriate permissions will not > be manipulated.
Why is this necessary to do in the kernel? Why not leave it to userspace to walk the filesystem(s)?
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