--- a/src/os/unix/ngx_writev_chain.c
+++ b/src/os/unix/ngx_writev_chain.c
@@ -10,80 +10,94 @@ ngx_chain_t *ngx_writev_chain(ngx_connec
     ssize_t          n, size;
     off_t            sent;
     struct iovec    *iov;
+    ngx_int_t        eintr;
     ngx_err_t        err;
     ngx_array_t      io;
     ngx_chain_t     *cl;
+    ngx_event_t     *wev;
 
-    if (!c->write->ready) {
+    wev = c->write;
+
+    if (!wev->ready) {
         return in;
     }
 
     ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_CHAIN_ERROR);
 
-    prev = NULL;
-    iov = NULL;
+    do {
+        prev = NULL;
+        iov = NULL;
+        eintr = 0;
 
-    /* create the iovec and coalesce the neighbouring hunks */
+        /* create the iovec and coalesce the neighbouring hunks */
 
-    for (cl = in; cl; cl = cl->next) {
+        for (cl = in; cl; cl = cl->next) {
 
-        if (prev == cl->hunk->pos) {
-            iov->iov_len += cl->hunk->last - cl->hunk->pos;
-            prev = cl->hunk->last;
+            if (prev == cl->hunk->pos) {
+                iov->iov_len += cl->hunk->last - cl->hunk->pos;
+                prev = cl->hunk->last;
 
-        } else {
-            ngx_test_null(iov, ngx_push_array(&io), NGX_CHAIN_ERROR);
-            iov->iov_base = cl->hunk->pos;
-            iov->iov_len = cl->hunk->last - cl->hunk->pos;
-            prev = cl->hunk->last;
+            } else {
+                ngx_test_null(iov, ngx_push_array(&io), NGX_CHAIN_ERROR);
+                iov->iov_base = cl->hunk->pos;
+                iov->iov_len = cl->hunk->last - cl->hunk->pos;
+                prev = cl->hunk->last;
+            }
         }
-    }
 
-    n = writev(c->fd, io.elts, io.nelts);
+        n = writev(c->fd, io.elts, io.nelts);
 
-    if (n == -1) {
-        err = ngx_errno;
-        if (err == NGX_EAGAIN) {
-            ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EAGAIN");
+        if (n == -1) {
+            err = ngx_errno;
+            if (err == NGX_EAGAIN) {
+                ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EAGAIN");
 
-        } else if (err == NGX_EINTR) {
-            ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EINTR");
+            } else if (err == NGX_EINTR) {
+                eintr = 1;
+                ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EINTR");
 
-        } else {
-            ngx_log_error(NGX_LOG_CRIT, c->log, err, "writev() failed");
-            return NGX_CHAIN_ERROR;
+            } else {
+                wev->error = 1;
+                ngx_log_error(NGX_LOG_CRIT, c->log, err, "writev() failed");
+                return NGX_CHAIN_ERROR;
+            }
         }
-    }
 
-    sent = n > 0 ? n : 0;
+        sent = n > 0 ? n : 0;
 
 #if (NGX_DEBUG_WRITE_CHAIN)
-    ngx_log_debug(c->log, "writev: " OFF_T_FMT  _ sent);
+        ngx_log_debug(c->log, "writev: " OFF_T_FMT  _ sent);
 #endif
 
-    c->sent += sent;
+        c->sent += sent;
 
-    for (cl = in; cl && sent > 0; cl = cl->next) {
+        for (cl = in; cl && sent > 0; cl = cl->next) {
 
-        size = cl->hunk->last - cl->hunk->pos;
+            size = cl->hunk->last - cl->hunk->pos;
 
 ngx_log_debug(c->log, "SIZE: %d" _ size);
 
-        if (sent >= size) {
-            sent -= size;
+            if (sent >= size) {
+                sent -= size;
 
-            if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
-                cl->hunk->pos = cl->hunk->last;
+                if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
+                    cl->hunk->pos = cl->hunk->last;
+                }
+
+                continue;
             }
 
-            continue;
+            if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
+                cl->hunk->pos += sent;
+            }
+
+            break;
         }
 
-        if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
-            cl->hunk->pos += sent;
-        }
+    } while (eintr);
 
-        break;
+    if (cl) {
+        wev->ready = 0;
     }
 
     return cl;