dedup

commit 00d03339c89087d34d11f3147daae28de6f94c7a
parent d6e4ca0475985f2f98e35fcfd5bdb3b4304a0eff
Author: sin <sin@2f30.org>
Date:   Thu, 25 Apr 2019 22:08:08 +0100

If fallocate(2) fails do our best to recover

Diffstat:
M
bstorage.c
 | 
8
+++++++-

1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/bstorage.c b/bstorage.c
@@ -567,7 +567,13 @@ bsrm(struct bctx *bctx, unsigned char *md)
 		int mode;
 
 		mode = FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE;
-		fallocate(sctx->fd, mode, bd->offset, bd->size);
+		if (fallocate(sctx->fd, mode, bd->offset, bd->size) < 0) {
+			lseek(sctx->fd, bdoffs, SEEK_SET);
+			bd->refcnt++;
+			packbd(sctx->fd, bd);
+			return -1;
+		}
+
 		RB_REMOVE(bdcache, &sctx->bdcache, bd);
 		free(bd);
 	}