path: root/builtin-diff-files.c
diff options
authorLinus Torvalds <>2008-11-14 00:36:30 (GMT)
committerJunio C Hamano <>2008-11-15 03:11:49 (GMT)
commit671c9b7e315db89081cc69f83a8f405e4aca37bc (patch)
tree0410fb1af855fc65a7d96dd15410db16e41cbc9f /builtin-diff-files.c
parenta0d3ab9c277f1a198ec8e29432c0127d4cf719d2 (diff)
Add cache preload facility
This can do the lstat() storm in parallel, giving potentially much improved performance for cold-cache cases or things like NFS that have weak metadata caching. Just use "read_cache_preload()" instead of "read_cache()" to force an optimistic preload of the index stat data. The function takes a pathspec as its argument, allowing us to preload only the relevant portion of the index. Signed-off-by: Linus Torvalds <> Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'builtin-diff-files.c')
1 files changed, 2 insertions, 2 deletions
diff --git a/builtin-diff-files.c b/builtin-diff-files.c
index 2b578c7..5b64011 100644
--- a/builtin-diff-files.c
+++ b/builtin-diff-files.c
@@ -59,8 +59,8 @@ int cmd_diff_files(int argc, const char **argv, const char *prefix)
(rev.diffopt.output_format & DIFF_FORMAT_PATCH))
rev.combine_merges = rev.dense_combined_merges = 1;
- if (read_cache() < 0) {
- perror("read_cache");
+ if (read_cache_preload(rev.diffopt.paths) < 0) {
+ perror("read_cache_preload");
return -1;
result = run_diff_files(&rev, options);