Messages in this thread Patch in this message | | | Subject | [PATCH] - UML - iomem fix | Date | Tue, 14 Sep 2004 15:33:48 -0400 | From | Jeff Dike <> |
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This patch rounds up the size of a file used for iomem emulation up to the nearest page. This makes mmap work much better on the last page of the file.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Index: 2.6.9-rc2/arch/um/kernel/mem_user.c =================================================================== --- 2.6.9-rc2.orig/arch/um/kernel/mem_user.c 2004-09-14 13:43:32.000000000 -0400 +++ 2.6.9-rc2/arch/um/kernel/mem_user.c 2004-09-14 13:53:25.000000000 -0400 @@ -143,7 +143,7 @@ struct iomem_region *new; struct uml_stat buf; char *file, *driver; - int fd, err; + int fd, err, size; driver = str; file = strchr(str,','); @@ -171,10 +171,12 @@ goto out_close; } + size = (buf.ust_size + UM_KERN_PAGE_SIZE) & ~(UM_KERN_PAGE_SIZE - 1); + *new = ((struct iomem_region) { .next = iomem_regions, .driver = driver, .fd = fd, - .size = buf.ust_size, + .size = size, .phys = 0, .virt = 0 }); iomem_regions = new; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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