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| author |   NeilBrown <neilb@suse.com> | 2018-03-29 15:26:48 +1100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-23 15:16:58 +0200 |
| commit | 05e6557b8ed833546ee2b66ce6b58fecf09f439e (patch) | |
| tree | a2cd87c97111677ec5a30d5f82260482c1d64f9f /drivers/staging/lustre/lustre/osc/osc_object.c | |
| parent | staging: lustre: rearrange placement of CPU partition management code. (diff) | |
| download | linux-dev-05e6557b8ed833546ee2b66ce6b58fecf09f439e.tar.xz linux-dev-05e6557b8ed833546ee2b66ce6b58fecf09f439e.zip | |
staging: lustre: add container_of_safe()
Luster has a container_of0() function which is similar to
container_of() but passes an IS_ERR_OR_NULL() pointer through
unchanged.
This could be generally useful: bcache at last has a similar function.
Naming is hard, but the precedent set by hlist_entry_safe() suggests
a _safe suffix might be most consistent.
So add container_of_safe() to kernel.h, and replace all occurrences of
container_of0() with one of
- list_first_entry, list_next_entry, when that is a better fit,
- container_of(), when the pointer is used as a validpointer in
surrounding code,
- container_of_safe() when there is no obviously better alternative.
Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/lustre/osc/osc_object.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/osc/osc_object.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/lustre/lustre/osc/osc_object.c b/drivers/staging/lustre/lustre/osc/osc_object.c index 4f81dd16f4f5..84240181c7ea 100644 --- a/drivers/staging/lustre/lustre/osc/osc_object.c +++ b/drivers/staging/lustre/lustre/osc/osc_object.c @@ -58,7 +58,7 @@ static struct lu_object *osc2lu(struct osc_object *osc) static struct osc_object *lu2osc(const struct lu_object *obj) { LINVRNT(osc_is_object(obj)); - return container_of0(obj, struct osc_object, oo_cl.co_lu); + return container_of(obj, struct osc_object, oo_cl.co_lu); } /***************************************************************************** |