diff options
| -rw-r--r-- | sys/kern/uipc_syscalls.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/sys/kern/uipc_syscalls.c b/sys/kern/uipc_syscalls.c index d849b21..2526c6b 100644 --- a/sys/kern/uipc_syscalls.c +++ b/sys/kern/uipc_syscalls.c @@ -1461,10 +1461,13 @@ sf_buf_alloc() sf_buf_alloc_want++; error = msleep(&sf_freelist, &sf_freelist.sf_lock, PVM|PCATCH, "sfbufa", 0); - if (error != 0) { - sf_buf_alloc_want--; + sf_buf_alloc_want--; + + /* + * If we got a signal, don't risk going back to sleep. + */ + if (error) break; - } } SLIST_REMOVE_HEAD(&sf_freelist.sf_head, free_list); mtx_unlock(&sf_freelist.sf_lock); @@ -1499,10 +1502,8 @@ sf_buf_free(caddr_t addr, void *args) sf->m = NULL; mtx_lock(&sf_freelist.sf_lock); SLIST_INSERT_HEAD(&sf_freelist.sf_head, sf, free_list); - if (sf_buf_alloc_want) { - sf_buf_alloc_want--; + if (sf_buf_alloc_want > 0) wakeup_one(&sf_freelist); - } mtx_unlock(&sf_freelist.sf_lock); } |
