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| author | Mikulas Patocka <mpatocka@redhat.com> | 2012-10-12 17:59:46 +0200 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-10-12 17:59:46 +0200 |
| commit | fe5fe90639b62a75349dd1f1c74c4a984397171c (patch) | |
| tree | 50332fca2fb4ff5851c4e1bfd8151d41ba83d781 /lib/locking-selftest-mutex.h | |
| parent | dm bufio: use list_move (diff) | |
| download | linux-fe5fe90639b62a75349dd1f1c74c4a984397171c.tar.xz linux-fe5fe90639b62a75349dd1f1c74c4a984397171c.zip | |
dm: use ACCESS_ONCE for sysfs values
Use the ACCESS_ONCE macro in dm-bufio and dm-verity where a variable
can be modified asynchronously (through sysfs) and we want to prevent
compiler optimizations that assume that the variable hasn't changed.
(See Documentation/atomic_ops.txt.)
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'lib/locking-selftest-mutex.h')
0 files changed, 0 insertions, 0 deletions