From: David Sterba <dsterba@suse.cz>
Date: Thu, 25 Jun 2015 17:36:06 +0000 (+0200)
Subject: btrfs-progs: defrag, check target extent earlier
X-Git-Tag: upstream/4.16.1~2143
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dedb1ebeee847e3c4d71e14d0c1077887630e44a;p=platform%2Fupstream%2Fbtrfs-progs.git

btrfs-progs: defrag, check target extent earlier

Print a warning if the target extent size (option -t) is larger than 4G.

Signed-off-by: David Sterba <dsterba@suse.cz>
---

diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 72bb45b..675e41d 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -1170,6 +1170,11 @@ static int cmd_defrag(int argc, char **argv)
 			break;
 		case 't':
 			thresh = parse_size(optarg);
+			if (thresh > (u32)-1) {
+				fprintf(stderr,
+			"WARNING: target extent size %llu too big, trimmed to %u",
+					thresh, (u32)-1);
+			}
 			defrag_global_fancy_ioctl = 1;
 			break;
 		case 'r':
@@ -1186,7 +1191,7 @@ static int cmd_defrag(int argc, char **argv)
 	memset(&defrag_global_range, 0, sizeof(range));
 	defrag_global_range.start = start;
 	defrag_global_range.len = len;
-	defrag_global_range.extent_thresh = thresh > (u32)-1 ? (u32)-1 : (u32)thresh;
+	defrag_global_range.extent_thresh = (u32)thresh;
 	if (compress_type) {
 		defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
 		defrag_global_range.compress_type = compress_type;