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/proc/pid/pagemap: fix PM_SPECIAL macro

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There seems to be a bug in the PM_SPECIAL macro for /proc/pid/pagemap.  I
think masking out those other bits makes more sense then setting all those
mask bits.

Signed-off-by: Hans Rosenfeld <Hans.Rosenfeld@amd.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Hans Rosenfeld 2008-02-23 15:23:31 -08:00 committed by Linus Torvalds
parent 8936b6dba2
commit 745329c4a2
1 changed files with 1 additions and 1 deletions
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2
fs/proc/task_mmu.c
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@ -531,7 +531,7 @@ struct pagemapread {
#define PM_RESERVED_BITS 3
#define PM_RESERVED_OFFSET (64 - PM_RESERVED_BITS)
#define PM_RESERVED_MASK (((1LL<<PM_RESERVED_BITS)-1) << PM_RESERVED_OFFSET)
#define PM_SPECIAL(nr) (((nr) << PM_RESERVED_OFFSET) | PM_RESERVED_MASK)
#define PM_SPECIAL(nr) (((nr) << PM_RESERVED_OFFSET) & PM_RESERVED_MASK)
#define PM_NOT_PRESENT PM_SPECIAL(1LL)
#define PM_SWAP PM_SPECIAL(2LL)
#define PM_END_OF_BUFFER 1