[CRIU] [PATCH v2] locks: skip 'lease correction' for non-regular files

[Pavel Begunkov (Silence)]

From: Pavel Begunkov <asml.silence at gmail.com>

Leases can be set only on regular files. Thus, as optimization we can
skip attempts to find associated leases in 'correct_file_leases_type'
for other fd types.

Signed-off-by: Pavel Begunkov <asml.silence at gmail.com>
---
 criu/files.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/criu/files.c b/criu/files.c
index 4f6b0378..8394ef46 100644
--- a/criu/files.c
+++ b/criu/files.c
@@ -489,8 +489,13 @@ static int dump_one_file(struct pid *pid, int fd, int lfd, struct fd_opts *opts,
 	if (note_file_lock(pid, fd, lfd, &p))
 		return -1;
 
-	if (correct_file_leases_type(pid, fd, lfd))
-		return -1;
+	/* Lease can be set only on regular file */
+	if (S_ISREG(p.stat.st_mode)) {
+		int ret = correct_file_leases_type(pid, fd, lfd);
+
+		if (ret < 0)
+			return ret;
+	}
 
 	p.fd_ctl = ctl; /* Some dump_opts require this to talk to parasite */
 
-- 
2.14.1.473.g3ec7d702a8