From c602d3a9897a408ce0db543860d472332f79d045 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Mon, 9 Oct 2017 13:48:52 -0400 Subject: [PATCH] write_entry: avoid reading blobs in CE_RETRY case When retrying a delayed filter-process request, we don't need to send the blob to the filter a second time. However, we read it unconditionally into a buffer, only to later throw away that buffer. We can make this more efficient by skipping the read in the first place when it isn't necessary. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- entry.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/entry.c b/entry.c index 637c5958b0..bec51e37a2 100644 --- a/entry.c +++ b/entry.c @@ -240,6 +240,7 @@ static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile) { unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT; + struct delayed_checkout *dco = state->delayed_checkout; int fd, ret, fstat_done = 0; char *new; struct strbuf buf = STRBUF_INIT; @@ -261,10 +262,19 @@ static int write_entry(struct cache_entry *ce, switch (ce_mode_s_ifmt) { case S_IFREG: case S_IFLNK: - new = read_blob_entry(ce, &size); - if (!new) - return error("unable to read sha1 file of %s (%s)", - path, oid_to_hex(&ce->oid)); + /* + * We do not send the blob in case of a retry, so do not + * bother reading it at all. + */ + if (ce_mode_s_ifmt == S_IFREG && dco && dco->state == CE_RETRY) { + new = NULL; + size = 0; + } else { + new = read_blob_entry(ce, &size); + if (!new) + return error("unable to read sha1 file of %s (%s)", + path, oid_to_hex(&ce->oid)); + } if (ce_mode_s_ifmt == S_IFLNK && has_symlinks && !to_tempfile) { ret = symlink(new, path); @@ -279,14 +289,7 @@ static int write_entry(struct cache_entry *ce, * Convert from git internal format to working tree format */ if (ce_mode_s_ifmt == S_IFREG) { - struct delayed_checkout *dco = state->delayed_checkout; if (dco && dco->state != CE_NO_DELAY) { - /* Do not send the blob in case of a retry. */ - if (dco->state == CE_RETRY) { - free(new); - new = NULL; - size = 0; - } ret = async_convert_to_working_tree( ce->name, new, size, &buf, dco); if (ret && string_list_has_string(&dco->paths, ce->name)) { -- 2.11.4.GIT