Mercurial > hg > nginx
view src/os/unix/ngx_setproctitle.h @ 7669:52b34c3f89b4
Too large st_blocks values are now ignored (ticket #157).
With XFS, using "allocsize=64m" mount option results in large preallocation
being reported in the st_blocks as returned by fstat() till the file is
closed. This in turn results in incorrect cache size calculations and
wrong clearing based on max_size.
To avoid too aggressive cache clearing on such volumes, st_blocks values
which result in sizes larger than st_size and eight blocks (an arbitrary
limit) are no longer trusted, and we use st_size instead.
The ngx_de_fs_size() counterpart is intentionally not modified, as
it is used on closed files and hence not affected by this problem.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 22 Jun 2020 18:02:59 +0300 |
parents | 16013b71feed |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_SETPROCTITLE_H_INCLUDED_ #define _NGX_SETPROCTITLE_H_INCLUDED_ #if (NGX_HAVE_SETPROCTITLE) /* FreeBSD, NetBSD, OpenBSD */ #define ngx_init_setproctitle(log) NGX_OK #define ngx_setproctitle(title) setproctitle("%s", title) #else /* !NGX_HAVE_SETPROCTITLE */ #if !defined NGX_SETPROCTITLE_USES_ENV #if (NGX_SOLARIS) #define NGX_SETPROCTITLE_USES_ENV 1 #define NGX_SETPROCTITLE_PAD ' ' ngx_int_t ngx_init_setproctitle(ngx_log_t *log); void ngx_setproctitle(char *title); #elif (NGX_LINUX) || (NGX_DARWIN) #define NGX_SETPROCTITLE_USES_ENV 1 #define NGX_SETPROCTITLE_PAD '\0' ngx_int_t ngx_init_setproctitle(ngx_log_t *log); void ngx_setproctitle(char *title); #else #define ngx_init_setproctitle(log) NGX_OK #define ngx_setproctitle(title) #endif /* OSes */ #endif /* NGX_SETPROCTITLE_USES_ENV */ #endif /* NGX_HAVE_SETPROCTITLE */ #endif /* _NGX_SETPROCTITLE_H_INCLUDED_ */