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author | Lee Schermerhorn <lee.schermerhorn@hp.com> | 2008-04-28 13:13:08 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-28 19:58:23 +0400 |
commit | f0be3d32b05d3fea2fcdbbb81a39dac2a7163169 (patch) | |
tree | 5794ce6a8befbce82cd3e44ff15fbf3bb5f2f3bf /kernel/cpuset.c | |
parent | 3b1163006332302117b1b2acf226d4014ff46525 (diff) |
mempolicy: rename mpol_free to mpol_put
This is a change that was requested some time ago by Mel Gorman. Makes sense
to me, so here it is.
Note: I retain the name "mpol_free_shared_policy()" because it actually does
free the shared_policy, which is NOT a reference counted object. However, ...
The mempolicy object[s] referenced by the shared_policy are reference counted,
so mpol_put() is used to release the reference held by the shared_policy. The
mempolicy might not be freed at this time, because some task attached to the
shared object associated with the shared policy may be in the process of
allocating a page based on the mempolicy. In that case, the task performing
the allocation will hold a reference on the mempolicy, obtained via
mpol_shared_policy_lookup(). The mempolicy will be freed when all tasks
holding such a reference have called mpol_put() for the mempolicy.
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/cpuset.c')
0 files changed, 0 insertions, 0 deletions