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| author | John Pittman <jpittman@redhat.com> | 2018-08-23 13:35:57 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2018-10-16 14:27:38 -0400 |
| commit | 092b5648760a23656f6dcc83b74f4cf661094aca (patch) | |
| tree | 6f3d1b43bf3cd0caa7a8ac3fa4b60f37221f519e /drivers/md/dm-cache-policy-smq.c | |
| parent | 22d4c291f58752d14efb8a185b772a3fc3e947d2 (diff) | |
| download | linux-stable-092b5648760a23656f6dcc83b74f4cf661094aca.tar.gz linux-stable-092b5648760a23656f6dcc83b74f4cf661094aca.tar.bz2 linux-stable-092b5648760a23656f6dcc83b74f4cf661094aca.zip | |
dm zoned: target: use refcount_t for dm zoned reference counters
The API surrounding refcount_t should be used in place of atomic_t
when variables are being used as reference counters. This API can
prevent issues such as counter overflows and use-after-free
conditions. Within the dm zoned target stack, the atomic_t API is
used for bioctx->ref and cw->refcount. Change these to use
refcount_t, avoiding the issues mentioned.
Signed-off-by: John Pittman <jpittman@redhat.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Tested-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-cache-policy-smq.c')
0 files changed, 0 insertions, 0 deletions