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| author | Christoph Lameter <clameter@sgi.com> | 2008-02-04 22:28:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:14 -0800 |
| commit | 9e2779fa281cfda13ac060753d674bbcaa23367e (patch) | |
| tree | e2af17d69b71e0f8b3f00fe949cb8abfba4298ed /fs | |
| parent | 0b7a96114bd5991d355a1f1c1d3d9c0c9d9c1cfc (diff) | |
| download | linux-3.10-9e2779fa281cfda13ac060753d674bbcaa23367e.tar.gz linux-3.10-9e2779fa281cfda13ac060753d674bbcaa23367e.tar.bz2 linux-3.10-9e2779fa281cfda13ac060753d674bbcaa23367e.zip | |
is_vmalloc_addr(): Check if an address is within the vmalloc boundaries
Checking if an address is a vmalloc address is done in a couple of places.
Define a common version in mm.h and replace the other checks.
Again the include structures suck. The definition of VMALLOC_START and
VMALLOC_END is not available in vmalloc.h since highmem.c cannot be included
there.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ntfs/malloc.h | 3 | ||||
| -rw-r--r-- | fs/proc/kcore.c | 2 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/kmem.c | 3 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_buf.c | 3 |
4 files changed, 4 insertions, 7 deletions
diff --git a/fs/ntfs/malloc.h b/fs/ntfs/malloc.h index e38e402e410..cd0be3f5c3c 100644 --- a/fs/ntfs/malloc.h +++ b/fs/ntfs/malloc.h @@ -85,8 +85,7 @@ static inline void *ntfs_malloc_nofs_nofail(unsigned long size) static inline void ntfs_free(void *addr) { - if (likely(((unsigned long)addr < VMALLOC_START) || - ((unsigned long)addr >= VMALLOC_END ))) { + if (!is_vmalloc_addr(addr)) { kfree(addr); /* free_page((unsigned long)addr); */ return; diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 1be73082edd..7dd26e18cbf 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -325,7 +325,7 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) if (m == NULL) { if (clear_user(buffer, tsz)) return -EFAULT; - } else if ((start >= VMALLOC_START) && (start < VMALLOC_END)) { + } else if (is_vmalloc_addr((void *)start)) { char * elf_buf; struct vm_struct *m; unsigned long curstart = start; diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c index ed2b16dff91..e040f1ce1b6 100644 --- a/fs/xfs/linux-2.6/kmem.c +++ b/fs/xfs/linux-2.6/kmem.c @@ -92,8 +92,7 @@ kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize, void kmem_free(void *ptr, size_t size) { - if (((unsigned long)ptr < VMALLOC_START) || - ((unsigned long)ptr >= VMALLOC_END)) { + if (!is_vmalloc_addr(ptr)) { kfree(ptr); } else { vfree(ptr); diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index a49dd8d4b06..0382c19d652 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -709,8 +709,7 @@ static inline struct page * mem_to_page( void *addr) { - if (((unsigned long)addr < VMALLOC_START) || - ((unsigned long)addr >= VMALLOC_END)) { + if ((!is_vmalloc_addr(addr))) { return virt_to_page(addr); } else { return vmalloc_to_page(addr); |