cgroup: don't recheck all the time whether the systemd hierarchy is mounted, to make strace outputs nicer and save a few stat()s
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8f7a3c1402
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0ac1082273
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@ -484,6 +484,7 @@ int cg_get_path(const char *controller, const char *path, const char *suffix, ch
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const char *p;
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const char *p;
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char *mp;
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char *mp;
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int r;
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int r;
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static __thread bool good = false;
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assert(controller);
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assert(controller);
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assert(fs);
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assert(fs);
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@ -504,9 +505,14 @@ int cg_get_path(const char *controller, const char *path, const char *suffix, ch
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if (asprintf(&mp, "/sys/fs/cgroup/%s", p) < 0)
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if (asprintf(&mp, "/sys/fs/cgroup/%s", p) < 0)
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return -ENOMEM;
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return -ENOMEM;
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if ((r = path_is_mount_point(mp)) <= 0) {
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if (!good) {
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free(mp);
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if ((r = path_is_mount_point(mp)) <= 0) {
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return r < 0 ? r : -ENOENT;
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free(mp);
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return r < 0 ? r : -ENOENT;
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}
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/* Cache this to save a few stat()s */
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good = true;
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}
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}
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if (path && suffix)
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if (path && suffix)
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