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refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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This was causing a build failure for openrisc when using musl and
gcc 5.4.0 since the file is not available in the toolchain.
It doesnt seem this is needed and removing it does not cause any build
warnings for me.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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This creates a new source file "net/ceph/snapshot.c" to contain
utility routines related to ceph snapshot contexts. The main
motivation was to define ceph_create_snap_context() as a common way
to create these structures, but I've moved the definitions of
ceph_get_snap_context() and ceph_put_snap_context() there too.
(The benefit of inlining those is very small, and I'd rather
keep this collection of functions together.)
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
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Elena Reshetova
Stafford Horne
Alex Elder