From 671c9b7e315db89081cc69f83a8f405e4aca37bc Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 13 Nov 2008 16:36:30 -0800 Subject: 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 --- builtin-diff.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'builtin-diff.c') diff --git a/builtin-diff.c b/builtin-diff.c index 7ceceeb6ff..1447c1d6ba 100644 --- a/builtin-diff.c +++ b/builtin-diff.c @@ -134,8 +134,8 @@ static int builtin_diff_index(struct rev_info *revs, revs->max_count != -1 || revs->min_age != -1 || revs->max_age != -1) usage(builtin_diff_usage); - if (read_cache() < 0) { - perror("read_cache"); + if (read_cache_preload(revs->diffopt.paths) < 0) { + perror("read_cache_preload"); return -1; } return run_diff_index(revs, cached); @@ -234,8 +234,8 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv revs->combine_merges = revs->dense_combined_merges = 1; setup_work_tree(); - if (read_cache() < 0) { - perror("read_cache"); + if (read_cache_preload(revs->diffopt.paths) < 0) { + perror("read_cache_preload"); return -1; } result = run_diff_files(revs, options); -- cgit v1.2.3