Mercurial > hg > nginx
view src/core/ngx_array.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 | 65b895cd0dfa |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_ARRAY_H_INCLUDED_ #define _NGX_ARRAY_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef struct { void *elts; ngx_uint_t nelts; size_t size; ngx_uint_t nalloc; ngx_pool_t *pool; } ngx_array_t; ngx_array_t *ngx_array_create(ngx_pool_t *p, ngx_uint_t n, size_t size); void ngx_array_destroy(ngx_array_t *a); void *ngx_array_push(ngx_array_t *a); void *ngx_array_push_n(ngx_array_t *a, ngx_uint_t n); static ngx_inline ngx_int_t ngx_array_init(ngx_array_t *array, ngx_pool_t *pool, ngx_uint_t n, size_t size) { /* * set "array->nelts" before "array->elts", otherwise MSVC thinks * that "array->nelts" may be used without having been initialized */ array->nelts = 0; array->size = size; array->nalloc = n; array->pool = pool; array->elts = ngx_palloc(pool, n * size); if (array->elts == NULL) { return NGX_ERROR; } return NGX_OK; } #endif /* _NGX_ARRAY_H_INCLUDED_ */