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Commit 930631ed authored by Steven Whitehouse's avatar Steven Whitehouse Committed by Linus Torvalds
Browse files

[PATCH] add DIV_ROUND_UP() 



Add the DIV_ROUND_UP() helper macro: divide `n' by `d', rounding up.

Stolen from the gfs2 tree(!) because the swsusp patches need it.

Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 060ec3d5

include/linux/kernel.h

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ extern const char linux_banner[]; 
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#define ALIGN(x,a) (((x)+(a)-1UL)&~((a)-1UL))

#define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))

#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))

#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))



#define	KERN_EMERG	"<0>"	/* system is unusable			*/