Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-07 13:43:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

slub: Remove objsize check in kmem_cache_flags()

Browse Source 
There is no page->offset anymore and also no associated limit on the number
of objects. The page->offset field was removed for 2.6.24. So the check
in kmem_cache_flags() is now also obsolete (should have been dropped
earlier, somehow a hunk vanished).

Reviewed-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-by: Christoph Lameter <clameter@sgi.com>
This commit is contained in:
Christoph Lameter 2008-02-15 23:45:24 -08:00
parent d9acf4b7b6
commit e153362a50
1 changed files with 4 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
mm/slub.c
View File

@ -997,30 +997,11 @@ static unsigned long kmem_cache_flags(unsigned long objsize,
void (*ctor)(struct kmem_cache *, void *)) void (*ctor)(struct kmem_cache *, void *))
{ {
/* /*
* The page->offset field is only 16 bit wide. This is an offset * Enable debugging if selected on the kernel commandline.
* in units of words from the beginning of an object. If the slab
* size is bigger then we cannot move the free pointer behind the
* object anymore.
*
* On 32 bit platforms the limit is 256k. On 64bit platforms
* the limit is 512k.
*
* Debugging or ctor may create a need to move the free
* pointer. Fail if this happens.
*/ */
if (objsize >= 65535 * sizeof(void *)) { if (slub_debug && (!slub_debug_slabs ||
BUG_ON(flags & (SLAB_RED_ZONE | SLAB_POISON | strncmp(slub_debug_slabs, name, strlen(slub_debug_slabs)) == 0))
SLAB_STORE_USER | SLAB_DESTROY_BY_RCU)); flags |= slub_debug;
BUG_ON(ctor);
} else {
/*
* Enable debugging if selected on the kernel commandline.
*/
if (slub_debug && (!slub_debug_slabs ||
strncmp(slub_debug_slabs, name,
strlen(slub_debug_slabs)) == 0))
flags |= slub_debug;
}
return flags; return flags;
} }