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Support for sendfile(SF_NOCACHE).

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The SF_NOCACHE flag, introduced in FreeBSD 11 along with the new non-blocking
sendfile() implementation by glebius@, makes it possible to use sendfile()
along with the "directio" directive.
This commit is contained in:
Maxim Dounin 2021-12-27 19:49:26 +03:00
parent 2a00e6141f
commit 1f01183b9e
3 changed files with 25 additions and 4 deletions
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17
src/core/ngx_output_chain.c
View File

@ -256,10 +256,6 @@ ngx_output_chain_as_is(ngx_output_chain_ctx_t *ctx, ngx_buf_t *buf)
}
#endif
if (buf->in_file && buf->file->directio) {
return 0;
}
sendfile = ctx->sendfile;
#if (NGX_SENDFILE_LIMIT)
@ -268,6 +264,19 @@ ngx_output_chain_as_is(ngx_output_chain_ctx_t *ctx, ngx_buf_t *buf)
sendfile = 0;
}
#endif
#if !(NGX_HAVE_SENDFILE_NODISKIO)
/*
* With DIRECTIO, disable sendfile() unless sendfile(SF_NOCACHE)
* is available.
*/
if (buf->in_file && buf->file->directio) {
sendfile = 0;
}
#endif
if (!sendfile) {

6
src/event/ngx_event_openssl.c
View File

@ -2955,7 +2955,13 @@ ngx_ssl_sendfile(ngx_connection_t *c, ngx_buf_t *file, size_t size)
ngx_set_errno(0);
#if (NGX_HAVE_SENDFILE_NODISKIO)
flags = (c->busy_count <= 2) ? SF_NODISKIO : 0;
if (file->file->directio) {
flags |= SF_NOCACHE;
}
#else
flags = 0;
#endif

6
src/os/unix/ngx_freebsd_sendfile_chain.c
View File

@ -174,7 +174,13 @@ ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit)
sent = 0;
#if (NGX_HAVE_SENDFILE_NODISKIO)
flags = (c->busy_count <= 2) ? SF_NODISKIO : 0;
if (file->file->directio) {
flags |= SF_NOCACHE;
}
#endif
rc = sendfile(file->file->fd, c->fd, file->file_pos,