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2a8837cd9
2020 Aug 07
3
[PATCH nbdkit] file: Implement cache=none and fadvise=normal|random|sequential.
...then this will stop other processes from being evicted from
+the page cache:
+
+ nbdkit file disk.img fadvise=sequential cache=none
+
=head2 Files on tmpfs
If you want to expose a file that resides on a file system known to
diff --git a/plugins/file/file.c b/plugins/file/file.c
index 076e7531..a8e37cd9 100644
--- a/plugins/file/file.c
+++ b/plugins/file/file.c
@@ -66,6 +66,18 @@
static char *filename = NULL;
+/* posix_fadvise mode: -1 = don't set it, or POSIX_FADV_*. */
+static int fadvise_mode =
+#if defined (HAVE_POSIX_FADVISE) && defined (POSIX_FADV_NORMAL)
+ POSIX_FADV_NORMA...