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13 June 2022, 11:31:42 UTC
Revision 701dfbc1cbdd42b814dd76a885c4b73f97011d08 authored by Hugh Dickins on 29 January 2007, 21:24:08 UTC, committed by Linus Torvalds on 30 January 2007, 16:33:32 UTC 
[PATCH] mm: mremap correct rmap accounting
 
Nick Piggin points out that page accounting on MIPS multiple ZERO_PAGEs
is not maintained by its move_pte, and could lead to freeing a ZERO_PAGE.

Instead of complicating that move_pte, just forget the minor optimization
when mremapping, and change the one thing which needed it for correctness
- filemap_xip use ZERO_PAGE(0) throughout instead of according to address.

[ "There is no block device driver one could use for XIP on mips
   platforms" - Carsten Otte ]

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Andrew Morton <akpm@osdl.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 8339f00
History
Tip revision: 701dfbc1cbdd42b814dd76a885c4b73f97011d08 authored by Hugh Dickins on 29 January 2007, 21:24:08 UTC
[PATCH] mm: mremap correct rmap accounting
Tip revision: 701dfbc
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include
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ipc
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security
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usr
.gitignore -rw-r--r-- 572 bytes
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 88.5 KB
Kbuild -rw-r--r-- 1.2 KB
MAINTAINERS -rw-r--r-- 80.1 KB
Makefile -rw-r--r-- 49.2 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.0 KB

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