diff options
| -rw-r--r-- | merge-ort.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/merge-ort.c b/merge-ort.c index 9b9d82ed10..325b19b182 100644 --- a/merge-ort.c +++ b/merge-ort.c @@ -316,9 +316,14 @@ struct merge_options_internal { * (e.g. "drivers/firmware/raspberrypi.c"). * * store all relevant paths in the repo, both directories and * files (e.g. drivers, drivers/firmware would also be included) - * * these keys serve to intern all the path strings, which allows - * us to do pointer comparison on directory names instead of - * strcmp; we just have to be careful to use the interned strings. + * * these keys serve to intern *all* path strings, which allows us + * to do pointer comparisons on file & directory names instead of + * using strcmp; however, for this pointer-comparison optimization + * to work, any code path that independently computes a path needs + * to check for it existing in this strmap, and if so, point to + * the path in this strmap instead of their computed copy. See + * the "reuse known pointer" comment in + * apply_directory_rename_modifications() for an example. * * The values of paths: * * either a pointer to a merged_info, or a conflict_info struct |