[PATCH] fadvise length handling fix

POSIX sez: "If len is zero, all data following offset is specified."

[PATCH] fadvise length handling fix
POSIX sez: "If len is zero, all data following offset is specified."
4c04146f · Andrew Morton · Linus Torvalds · e408f065 · 4c04146f
Commit 4c04146f authored Apr 29, 2004 by Andrew Morton Committed by Linus Torvalds Apr 29, 2004
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mm/fadvise.c mm/fadvise.c +3 -0

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--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -38,6 +38,9 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
 		goto out;
 	}

+	if (len == 0)		/* 0 == "all data following offset" */
+		len = -1;
+
 	bdi = mapping->backing_dev_info;

 	switch (advice) {