Attachment 77743 Details for Bug 149905

[patch] Proposed patch to growisofs

growisofs-directio-limit (text/plain), 1.07 KB, created by Olaf Kirch on 2006-04-11 10:41:27 UTC

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Creator: Olaf Kirch

Created: 2006-04-11 10:41:27 UTC

Size: 1.07 KB

patch

obsolete

> growisofs.c |   12 +++++++++---
> 1 files changed, 9 insertions(+), 3 deletions(-)
>
>Index: dvd+rw-tools-6.1/growisofs.c
>===================================================================
>--- dvd+rw-tools-6.1.orig/growisofs.c
>+++ dvd+rw-tools-6.1/growisofs.c
>@@ -506,6 +506,7 @@ static pwrite64_t pwrite64_method = pwri
>  */
> static char         *the_buffer;
> static unsigned int  the_buffer_size=DEFAULT_BUF_SIZE_MB*1024*1024;
>+static unsigned int  directio_chunk = 4 * 1024 * 1024;
> 
> /*
>  * Synchronization objects
>@@ -1968,10 +1969,15 @@ int builtin_dd (int infd,int outfd,off64
>     highest_ecc_block = off/DVD_BLOCK;
>     assert (highest_ecc_block==2);
>     /* Fill the_buffer up to the_buffer_size */
>-    while ((n=read (infd,the_buffer+off,the_buffer_size-off)) > 0)
>-    {	off += n;
>-	if (off == the_buffer_size)
>+    while (off < the_buffer_size) {
>+    	unsigned int to_read = the_buffer_size - off;
>+
>+	if (to_read > directio_chunk)
>+	    to_read = directio_chunk;
>+
>+    	if ((n = read(infd, the_buffer+off, to_read)) <= 0)
> 	    break;
>+    	off += n;
>     }
>     if (n<0) goto out;
>

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Attachments on bug 149905: 67550 | 75786 | 77012 | 77743