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author | David S. Miller <davem@davemloft.net> | 2008-06-13 20:52:39 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2008-06-13 20:52:39 -0700 |
commit | 4ae127d1b6c71f9240dd4245f240e6dd8fc98014 (patch) | |
tree | b7aa27b3e0c655f4613fe2146cb57d7f69e421f6 /mm/nommu.c | |
parent | 875ec4333b99144e2589e900a0bcd2c25c757b27 (diff) | |
parent | 7775c9753b94fe429dc4323360d6502c95e0dd6e (diff) | |
download | kernel_samsung_smdk4412-4ae127d1b6c71f9240dd4245f240e6dd8fc98014.zip kernel_samsung_smdk4412-4ae127d1b6c71f9240dd4245f240e6dd8fc98014.tar.gz kernel_samsung_smdk4412-4ae127d1b6c71f9240dd4245f240e6dd8fc98014.tar.bz2 |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/smc911x.c
Diffstat (limited to 'mm/nommu.c')
-rw-r--r-- | mm/nommu.c | 17 |
1 files changed, 12 insertions, 5 deletions
@@ -109,16 +109,23 @@ unsigned int kobjsize(const void *objp) * If the object we have should not have ksize performed on it, * return size of 0 */ - if (!objp || (unsigned long)objp >= memory_end || !((page = virt_to_page(objp)))) + if (!objp || !virt_addr_valid(objp)) return 0; + page = virt_to_head_page(objp); + + /* + * If the allocator sets PageSlab, we know the pointer came from + * kmalloc(). + */ if (PageSlab(page)) return ksize(objp); - BUG_ON(page->index < 0); - BUG_ON(page->index >= MAX_ORDER); - - return (PAGE_SIZE << page->index); + /* + * The ksize() function is only guaranteed to work for pointers + * returned by kmalloc(). So handle arbitrary pointers here. + */ + return PAGE_SIZE << compound_order(page); } /* |