X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=fs%2Fjbd2%2Frevoke.c;h=fa608788b93d7c55977b8c64201374ffb6a1a42c;hb=fdc3ef882a5d59c1709a13b5486ae2b1632e12b6;hp=f08073d7bbf57d975a1f85957b39ef497f1a38aa;hpb=77444ac4f9537bc4211f928959d5231445e30c6e;p=linux.git

diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index f08073d7bbf5..fa608788b93d 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -371,6 +371,11 @@ int jbd2_journal_revoke(handle_t *handle, unsigned long long blocknr,
 	}
 #endif
 
+	if (WARN_ON_ONCE(handle->h_revoke_credits <= 0)) {
+		if (!bh_in)
+			brelse(bh);
+		return -EIO;
+	}
 	/* We really ought not ever to revoke twice in a row without
            first having the revoke cancelled: it's illegal to free a
            block twice without allocating it in between! */
@@ -391,6 +396,7 @@ int jbd2_journal_revoke(handle_t *handle, unsigned long long blocknr,
 			__brelse(bh);
 		}
 	}
+	handle->h_revoke_credits--;
 
 	jbd_debug(2, "insert revoke for block %llu, bh_in=%p\n",blocknr, bh_in);
 	err = insert_revoke_hash(journal, blocknr,