From e454681276ffa34984dda56e74d2fda05a24636c Mon Sep 17 00:00:00 2001 From: Jeremy Allison Date: Thu, 12 Jul 2012 10:10:32 -0700 Subject: Linux-specific optimization in aio_open code. Use initial_allocation_size to allocate on disk if sent. Ignore failures (upper level will cope). Autobuild-User(master): Jeremy Allison Autobuild-Date(master): Fri Jul 13 00:35:48 CEST 2012 on sn-devel-104 --- source3/modules/vfs_aio_pthread.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'source3') diff --git a/source3/modules/vfs_aio_pthread.c b/source3/modules/vfs_aio_pthread.c index 4525beb818..2c6121dbe5 100644 --- a/source3/modules/vfs_aio_pthread.c +++ b/source3/modules/vfs_aio_pthread.c @@ -27,6 +27,9 @@ #include "smbd/smbd.h" #include "smbd/globals.h" #include "lib/pthreadpool/pthreadpool.h" +#ifdef HAVE_LINUX_FALLOC_H +#include +#endif struct aio_extra; static struct pthreadpool *pool; @@ -635,6 +638,7 @@ struct aio_open_private_data { char *dname; struct smbd_server_connection *sconn; const struct security_unix_token *ux_tok; + uint64_t initial_allocation_size; /* Returns. */ int ret_fd; int ret_errno; @@ -769,6 +773,23 @@ static void aio_open_worker(void *private_data) } else { /* Create was successful. */ opd->ret_errno = 0; + +#if defined(HAVE_LINUX_FALLOCATE) + /* + * See if we can set the initial + * allocation size. We don't record + * the return for this as it's an + * optimization - the upper layer + * will also do this for us once + * the open returns. + */ + if (opd->initial_allocation_size) { + (void)fallocate(opd->ret_fd, + FALLOC_FL_KEEP_SIZE, + 0, + (off_t)opd->initial_allocation_size); + } +#endif } } @@ -810,6 +831,7 @@ static struct aio_open_private_data *create_private_open_data(const files_struct opd->mid = fsp->mid; opd->in_progress = true; opd->sconn = fsp->conn->sconn; + opd->initial_allocation_size = fsp->initial_allocation_size; /* Copy our current credentials. */ opd->ux_tok = copy_unix_token(opd, get_current_utok(fsp->conn)); -- cgit