details: http://hg.nginx.org/nginx/rev/8f6d753c1953
branches:
changeset: 6298:8f6d753c1953
user: Valentin Bartenev <vbart@nginx.com>
date: Tue Nov 17 19:01:41 2015 +0300
description:
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.

diffstat:

src/os/unix/ngx_files.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diffs (11 lines):

diff -r 92482faf5d8a -r 8f6d753c1953 src/os/unix/ngx_files.c
--- a/src/os/unix/ngx_files.c Tue Nov 17 19:01:41 2015 +0300
+++ b/src/os/unix/ngx_files.c Tue Nov 17 19:01:41 2015 +0300
@@ -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;


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