Optimize VFS::touch and fix defects and race conditions.
#7740
| Job | Run time |
|---|---|
| 18m 40s | |
| 12m 48s | |
| 15m 39s | |
| 19m 14s | |
| 7m 55s | |
| 16m 16s | |
| 25m 53s | |
| 22m 1s | |
| 15m 42s | |
| 22m 20s | |
| 33m 59s | |
| 18m 21s | |
| 54m 58s | |
| 11m 45s | |
| 35m 37s | |
| 31m 26s | |
| 33m 42s | |
| 21m 1s | |
| 29m 5s | |
| 1h 8m 50s | |
| 8m 8s | |
| 7m 56s | |
| 8m 32s | |
| 8m 18s | |
| 8m 46s | |
| 8m 44s | |
| 8m 49s | |
| 8m 41s | |
| 8m 28s | |
| 8m 19s | |
| 8m 32s | |
| 8m 17s | |
| 8m 44s | |
| 8m 41s | |
| 9m 25s | |
| 8m 54s | |
| 9m 1s | |
| 9m 0s | |
| 7m 48s | |
| 9m 0s | |
| 9m 18s | |
| 9m 19s | |
| 9m 18s | |
| 9m 20s | |
| 9m 9s | |
| 9m 8s | |
| 9m 27s | |
| 9m 19s | |
| 9m 25s | |
| 8m 59s | |
| 8m 55s | |
| 1s | |
| 13h 8m 53s |