liblttd: don't fill the page cache

[ltt-control.git] / liblttd / liblttd.c

diff --git a/liblttd/liblttd.c b/liblttd/liblttd.c
index 91f3a27bf1126f0f16c97adc667f17ec57f7f968..2b187c85860996f7304352453a649b0502967e24 100644 (file)
--- a/liblttd/liblttd.c
+++ b/liblttd/liblttd.c
@@ -109,6 +109,7 @@ int open_buffer_file(struct liblttd_instance *instance, char *filename,
 {
        int open_ret = 0;
        int ret = 0;
+       int fd;
 
        if (strncmp(filename, "flight-", sizeof("flight-")-1) != 0) {
                if (instance->dump_flight_only) {
@@ -129,8 +130,9 @@ int open_buffer_file(struct liblttd_instance *instance, char *filename,
                        ++instance->fd_pairs.num_pairs * sizeof(struct fd_pair));
 
        /* Open the channel in read mode */
-       instance->fd_pairs.pair[instance->fd_pairs.num_pairs-1].channel =
-               open(path_channel, O_RDONLY | O_NONBLOCK);
+       fd = open(path_channel, O_RDONLY | O_NONBLOCK);
+       instance->fd_pairs.pair[instance->fd_pairs.num_pairs-1].channel = fd;
+
        if (instance->fd_pairs.pair[instance->fd_pairs.num_pairs-1].channel == -1) {
                perror(path_channel);
                instance->fd_pairs.num_pairs--;