btrfs-progs: cmd_find_new: Sync fs before searching for modified files.

The sync makes sure that 'very recently' introduced delayed work is
accounted for in the output of 'btrfs subvolume find-new' command.

Signed-off-by: chandan <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

diff --git a/cmds-subvolume.c b/cmds-subvolume.c
index de246ab..8832303 100644 (file)
--- a/cmds-subvolume.c
+++ b/cmds-subvolume.c
@@ -786,6 +786,15 @@ static int cmd_find_new(int argc, char **argv)
                fprintf(stderr, "ERROR: can't access '%s'\n", subvol);
                return 1;
        }
+
+       ret = ioctl(fd, BTRFS_IOC_SYNC);
+       if (ret < 0) {
+               fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
+                       subvol, strerror(errno));
+               close_file_or_dir(fd, dirstream);
+               return 1;
+       }
+
        ret = btrfs_list_find_updated_files(fd, 0, last_gen);
        close_file_or_dir(fd, dirstream);
        return !!ret;