# HG changeset patch
# User Valentin Bartenev <vbart@nginx.com>
# Date 1447776101 -10800
# Node ID 8f6d753c195386694b27760199aef0b2829fb715
# Parent  92482faf5d8a64b2dbe39d4635b93566275b1384
Adjusted file->sys_offset after the write() syscall.

This fixes suboptimal behavior caused by surplus lseek() for sequential writes
on systems without pwrite().  A consecutive read after write might result in an
error on systems without pread() and pwrite().

Fortunately, at the moment there are no widely used systems without these
syscalls.

diff --git a/src/os/unix/ngx_files.c b/src/os/unix/ngx_files.c
--- a/src/os/unix/ngx_files.c
+++ b/src/os/unix/ngx_files.c
@@ -226,6 +226,7 @@ ngx_write_file(ngx_file_t *file, u_char 
             return NGX_ERROR;
         }
 
+        file->sys_offset += n;
         file->offset += n;
         written += n;