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authorGui Hecheng <guihc.fnst@cn.fujitsu.com>2014-08-06 16:09:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 18:01:25 -0700
commite004f3c7780de32fa822f292ebadd985bcadb1e0 (patch)
tree6e555319c67560cfcec912d6f067bdead3fabaf8 /lib/cmdline.c
parent428ac5fc056e06dc0b4ed82d5979add9a8c62b35 (diff)
downloadlwn-e004f3c7780de32fa822f292ebadd985bcadb1e0.tar.gz
lwn-e004f3c7780de32fa822f292ebadd985bcadb1e0.zip
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>
Diffstat (limited to 'lib/cmdline.c')
-rw-r--r--lib/cmdline.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/lib/cmdline.c b/lib/cmdline.c
index d4932f745e92..76a712e6e20e 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -121,11 +121,7 @@ EXPORT_SYMBOL(get_options);
* @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 memparse(const char *ptr, char **retptr)
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;