From caa6b7825aaddb8a97a5b793ca61df0c1ec9b76b Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 8 Jul 2009 19:31:49 -0700 Subject: Avoid doing extra 'lstat()'s for d_type if we have an up-to-date cache entry On filesystems without d_type, we can look at the cache entry first. Doing an lstat() can be expensive. Reported by Dmitry Potapov for Cygwin. Signed-off-by: Linus Torvalds Signed-off-by: Junio C Hamano --- dir.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/dir.c b/dir.c index b0671f59c8..8a9e7d8131 100644 --- a/dir.c +++ b/dir.c @@ -16,7 +16,7 @@ struct path_simplify { static int read_directory_recursive(struct dir_struct *dir, const char *path, int len, int check_only, const struct path_simplify *simplify); -static int get_dtype(struct dirent *de, const char *path); +static int get_dtype(struct dirent *de, const char *path, int len); static int common_prefix(const char **pathspec) { @@ -326,7 +326,7 @@ static int excluded_1(const char *pathname, if (x->flags & EXC_FLAG_MUSTBEDIR) { if (*dtype == DT_UNKNOWN) - *dtype = get_dtype(NULL, pathname); + *dtype = get_dtype(NULL, pathname, pathlen); if (*dtype != DT_DIR) continue; } @@ -566,14 +566,18 @@ static int in_pathspec(const char *path, int len, const struct path_simplify *si return 0; } -static int get_dtype(struct dirent *de, const char *path) +static int get_dtype(struct dirent *de, const char *path, int len) { int dtype = de ? DTYPE(de) : DT_UNKNOWN; + struct cache_entry *ce; struct stat st; if (dtype != DT_UNKNOWN) return dtype; - if (lstat(path, &st)) + ce = cache_name_exists(path, len, 0); + if (ce && ce_uptodate(ce)) + st.st_mode = ce->ce_mode; + else if (lstat(path, &st)) return dtype; if (S_ISREG(st.st_mode)) return DT_REG; @@ -633,7 +637,7 @@ static int read_directory_recursive(struct dir_struct *dir, const char *base, in continue; if (dtype == DT_UNKNOWN) - dtype = get_dtype(de, path); + dtype = get_dtype(de, path, len); /* * Do we want to see just the ignored files? -- cgit v1.2.3