Don't flush cache if it hasn't been modified - dedup - deduplicating backup program
HTML git clone git://bitreich.org/dedup/ git://enlrupgkhuxnvlhsf6lc3fziv5h2hhfrinws65d7roiv6bfj7d652fid.onion/dedup/
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---
DIR commit 9ffbdb14b746f421734fd66435a330b033edbad6
DIR parent e0161df4361701471430efb134e1f37906bd6226
HTML Author: sin <sin@2f30.org>
Date: Mon, 18 Feb 2019 13:33:13 +0000
Don't flush cache if it hasn't been modified
Diffstat:
M dedup.c | 6 ++++++
1 file changed, 6 insertions(+), 0 deletions(-)
---
DIR diff --git a/dedup.c b/dedup.c
@@ -78,6 +78,7 @@ int ifd;
int sfd;
int cfd;
int verbose;
+int cache_dirty;
char *argv0;
/*
@@ -285,6 +286,9 @@ flush_cache(void)
{
struct cent *cent;
+ if (!cache_dirty)
+ return;
+
lseek(cfd, 0, SEEK_SET);
RB_FOREACH(cent, cache, &cache_head)
xwrite(cfd, ¢->bdescr, sizeof(cent->bdescr));
@@ -451,6 +455,7 @@ dedup(int fd, char *msg)
cent = alloc_cent();
cent->bdescr = bdescr;
add_cent(cent);
+ cache_dirty = 1;
enthdr.st.actual_bytes += bdescr.size;
enthdr.st.cache_misses++;
@@ -583,6 +588,7 @@ rebuild_cache(struct ent *ent, void *arg)
memcpy(cent->bdescr.md, md, sizeof(cent->bdescr.md));
cent->bdescr = ent->bdescr[i];
add_cent(cent);
+ cache_dirty = 1;
}
free(buf);
return WALK_CONTINUE;