lib/cmdline.c: add size unit t/p/e to memparse
For modern filesystems such as btrfs, t/p/e size level operations are
common. add size unit t/p/e parsing to memparse
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/cmdline.c b/lib/cmdline.c
index d4932f7..76a712e 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -121,11 +121,7 @@
* @retptr: (output) Optional pointer to next char after parse completes
*
* Parses a string into a number. The number stored at @ptr is
- * potentially suffixed with %K (for kilobytes, or 1024 bytes),
- * %M (for megabytes, or 1048576 bytes), or %G (for gigabytes, or
- * 1073741824). If the number is suffixed with K, M, or G, then
- * the return value is the number multiplied by one kilobyte, one
- * megabyte, or one gigabyte, respectively.
+ * potentially suffixed with K, M, G, T, P, E.
*/
unsigned long long memparse(const char *ptr, char **retptr)
@@ -135,6 +131,15 @@
unsigned long long ret = simple_strtoull(ptr, &endptr, 0);
switch (*endptr) {
+ case 'E':
+ case 'e':
+ ret <<= 10;
+ case 'P':
+ case 'p':
+ ret <<= 10;
+ case 'T':
+ case 't':
+ ret <<= 10;
case 'G':
case 'g':
ret <<= 10;