parisc: mm: Fix a memory leak related to pmd not attached to the pgd

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commit 4c4ac9a48a upstream.

Commit 0e0da48dee ("parisc: mm: don't count preallocated pmds")
introduced a memory leak.

After this commit, the 'return' statement in pmd_free is executed in all
cases. Even for pmd that are not attached to the pgd.  So 'free_pages'
can never be called anymore, leading to a memory leak.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Christophe Jaillet 2015-07-13 11:32:43 +02:00 • committed by Greg Kroah-Hartman

parent 78eb5efb6f

commit 0ab58712e5

1 changed files with 2 additions and 1 deletions

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arch/parisc/include/asm/pgalloc.h

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