Re: [PATCH 0/3] Fadvise: Directory level page cache cleaning support

[Dave Hansen]

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)?


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/