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| author | Matthew Wilcox <willy@infradead.org> | 2016-12-14 15:08:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-14 16:04:10 -0800 |
| commit | 91d9c05ac6c788531136888d31ef18c6a0ec160f (patch) | |
| tree | 858de508527dbe571ca87a77d572a38ebf92b55d /lib/mpi/generic_mpih-rshift.c | |
| parent | 91b9677c4c1242a3d0afd76d0e91f43808243b92 (diff) | |
| download | linux-91d9c05ac6c788531136888d31ef18c6a0ec160f.tar.gz linux-91d9c05ac6c788531136888d31ef18c6a0ec160f.tar.bz2 linux-91d9c05ac6c788531136888d31ef18c6a0ec160f.zip | |
radix-tree: move rcu_head into a union with private_list
I want to be able to reference node->parent after freeing node.
Currently node->parent is in a union with rcu_head, so it is overwritten
when the node is put on the RCU list. We know that private_list is not
referenced after the node is freed, so it is safe for these two members
to share space.
Link: http://lkml.kernel.org/r/1480369871-5271-50-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/mpi/generic_mpih-rshift.c')
0 files changed, 0 insertions, 0 deletions