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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-11-13 16:36:30 -0800 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2008-11-14 19:11:49 -0800 |
| commit | 671c9b7e315db89081cc69f83a8f405e4aca37bc (patch) | |
| tree | 0410fb1af855fc65a7d96dd15410db16e41cbc9f /builtin-diff.c | |
| parent | a0d3ab9c277f1a198ec8e29432c0127d4cf719d2 (diff) | |
| download | git-671c9b7e315db89081cc69f83a8f405e4aca37bc.tar.gz | |
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 <torvalds@linux-foundation.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-diff.c')
| -rw-r--r-- | builtin-diff.c | 8 |
1 files changed, 4 insertions, 4 deletions
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); |