X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.c;h=127314e3590bd1efd79908eeb5363c5580afef86;hp=4c761c038bd170f16d0d10c094c69e96f7fa503f;hb=4d9345ae968ca92ace3dab06c25a9b73159cb329;hpb=bb3884d855100fa8fa6a1d2aac79e867dfd47bf9

diff --git a/fio.c b/fio.c
index 4c761c03..127314e3 100644
--- a/fio.c
+++ b/fio.c
@@ -37,9 +37,9 @@
 #include "fio.h"
 #include "os.h"
 
-#define MASK	(4095)
-
-#define ALIGN(buf)	(char *) (((unsigned long) (buf) + MASK) & ~(MASK))
+static unsigned long page_mask;
+#define ALIGN(buf)	\
+	(char *) (((unsigned long) (buf) + page_mask) & ~page_mask)
 
 int groupid = 0;
 int thread_number = 0;
@@ -406,11 +406,22 @@ static void do_io(struct thread_data *td)
 
 		memcpy(&s, &io_u->start_time, sizeof(s));
 
+requeue:
 		ret = td_io_queue(td, io_u);
 		if (ret) {
-			td_verror(td, io_u->error);
-			put_io_u(td, io_u);
-			break;
+			if (ret > 0 && (io_u->xfer_buflen != io_u->resid) &&
+			    io_u->resid) {
+				/*
+				 * short read/write. requeue.
+				 */
+				io_u->xfer_buflen = io_u->resid;
+				io_u->xfer_buf += ret;
+				goto requeue;
+			} else {
+				td_verror(td, io_u->error);
+				put_io_u(td, io_u);
+				break;
+			}
 		}
 
 		add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time));
@@ -528,7 +539,7 @@ static int init_io_u(struct thread_data *td)
 	if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE)
 		td->orig_buffer_size = (td->orig_buffer_size + td->hugepage_size - 1) & ~(td->hugepage_size - 1);
 	else
-		td->orig_buffer_size += MASK;
+		td->orig_buffer_size += page_mask;
 
 	if (allocate_io_mem(td))
 		return 1;
@@ -647,9 +658,6 @@ static void *thread_main(void *data)
 		goto err;
 	}
 
-	if (td_io_init(td))
-		goto err;
-
 	if (init_iolog(td))
 		goto err;
 
@@ -680,6 +688,13 @@ static void *thread_main(void *data)
 	if (open_files(td))
 		goto err;
 
+	/*
+	 * Do this late, as some IO engines would like to have the
+	 * files setup prior to initializing structures.
+	 */
+	if (td_io_init(td))
+		goto err;
+
 	if (td->exec_prerun)
 		system(td->exec_prerun);
 
@@ -837,7 +852,6 @@ static void run_threads(void)
 
 	signal(SIGINT, sig_handler);
 	signal(SIGALRM, sig_handler);
-	signal(SIGSEGV, sig_handler);
 
 	todo = thread_number;
 	nr_running = 0;
@@ -992,6 +1006,8 @@ static void run_threads(void)
 
 int main(int argc, char *argv[])
 {
+	long ps;
+
 	if (parse_options(argc, argv))
 		return 1;
 
@@ -1000,6 +1016,14 @@ int main(int argc, char *argv[])
 		return 1;
 	}
 
+	ps = sysconf(_SC_PAGESIZE);
+	if (ps < 0) {
+		log_err("Failed to get page size\n");
+		return 1;
+	}
+
+	page_mask = ps - 1;
+
 	if (write_bw_log) {
 		setup_log(&agg_io_log[DDIR_READ]);
 		setup_log(&agg_io_log[DDIR_WRITE]);