[IA64] Manual merge fix for 3 files

	arch/ia64/Kconfig
	arch/ia64/kernel/acpi.c
	include/asm-ia64/irq.h

Signed-off-by: Tony Luck <tony.luck@intel.com>

116 files changed, 3608 insertions, 1656 deletions

diff --git a/fs/Kconfig b/fs/Kconfig
index ed78d24ee42..5e817902cb3 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -382,10 +382,8 @@ config QUOTA
 	  usage (also called disk quotas). Currently, it works for the
 	  ext2, ext3, and reiserfs file system. ext3 also supports journalled
 	  quotas for which you don't need to run quotacheck(8) after an unclean
-	  shutdown. You need additional software in order to use quota support
-	  (you can download sources from
-	  <http://www.sf.net/projects/linuxquota/>). For further details, read
-	  the Quota mini-HOWTO, available from
+	  shutdown.
+	  For further details, read the Quota mini-HOWTO, available from
 	  <http://www.tldp.org/docs.html#howto>, or the documentation provided
 	  with the quota tools. Probably the quota support is only useful for
 	  multi user systems. If unsure, say N.
@@ -403,8 +401,7 @@ config QFMT_V2
 	depends on QUOTA
 	help
 	  This quota format allows using quotas with 32-bit UIDs/GIDs. If you
-	  need this functionality say Y here. Note that you will need recent
-	  quota utilities (>= 3.01) for new quota format with this kernel.
+	  need this functionality say Y here.
 
 config QUOTACTL
 	bool
@@ -816,6 +813,18 @@ config RAMFS
 	  To compile this as a module, choose M here: the module will be called
 	  ramfs.
 
+config RELAYFS_FS
+	tristate "Relayfs file system support"
+	---help---
+	  Relayfs is a high-speed data relay filesystem designed to provide
+	  an efficient mechanism for tools and facilities to relay large
+	  amounts of data from kernel space to user space.
+
+	  To compile this code as a module, choose M here: the module will be
+	  called relayfs.
+
+	  If unsure, say N.
+
 endmenu
 
 menu "Miscellaneous filesystems"
diff --git a/fs/Makefile b/fs/Makefile
index cf95eb894fd..15158309dee 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -90,6 +90,7 @@ obj-$(CONFIG_AUTOFS_FS)		+= autofs/
 obj-$(CONFIG_AUTOFS4_FS)	+= autofs4/
 obj-$(CONFIG_ADFS_FS)		+= adfs/
 obj-$(CONFIG_UDF_FS)		+= udf/
+obj-$(CONFIG_RELAYFS_FS)	+= relayfs/
 obj-$(CONFIG_SUN_OPENPROMFS)	+= openpromfs/
 obj-$(CONFIG_JFS_FS)		+= jfs/
 obj-$(CONFIG_XFS_FS)		+= xfs/
diff --git a/fs/bio.c b/fs/bio.c
index 1f2d4649b18..a7d4fd3a329 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -25,6 +25,7 @@
 #include <linux/module.h>
 #include <linux/mempool.h>
 #include <linux/workqueue.h>
+#include <scsi/sg.h>		/* for struct sg_iovec */
 
 #define BIO_POOL_SIZE 256
 
@@ -104,18 +105,22 @@ static inline struct bio_vec *bvec_alloc_bs(unsigned int __nocast gfp_mask, int
 	return bvl;
 }
 
-/*
- * default destructor for a bio allocated with bio_alloc_bioset()
- */
-static void bio_destructor(struct bio *bio)
+void bio_free(struct bio *bio, struct bio_set *bio_set)
 {
 	const int pool_idx = BIO_POOL_IDX(bio);
-	struct bio_set *bs = bio->bi_set;
 
 	BIO_BUG_ON(pool_idx >= BIOVEC_NR_POOLS);
 
-	mempool_free(bio->bi_io_vec, bs->bvec_pools[pool_idx]);
-	mempool_free(bio, bs->bio_pool);
+	mempool_free(bio->bi_io_vec, bio_set->bvec_pools[pool_idx]);
+	mempool_free(bio, bio_set->bio_pool);
+}
+
+/*
+ * default destructor for a bio allocated with bio_alloc_bioset()
+ */
+static void bio_fs_destructor(struct bio *bio)
+{
+	bio_free(bio, fs_bio_set);
 }
 
 inline void bio_init(struct bio *bio)
@@ -171,8 +176,6 @@ struct bio *bio_alloc_bioset(unsigned int __nocast gfp_mask, int nr_iovecs, stru
 			bio->bi_max_vecs = bvec_slabs[idx].nr_vecs;
 		}
 		bio->bi_io_vec = bvl;
-		bio->bi_destructor = bio_destructor;
-		bio->bi_set = bs;
 	}
 out:
 	return bio;
@@ -180,7 +183,12 @@ out:
 
 struct bio *bio_alloc(unsigned int __nocast gfp_mask, int nr_iovecs)
 {
-	return bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set);
+	struct bio *bio = bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set);
+
+	if (bio)
+		bio->bi_destructor = bio_fs_destructor;
+
+	return bio;
 }
 
 void zero_fill_bio(struct bio *bio)
@@ -273,8 +281,10 @@ struct bio *bio_clone(struct bio *bio, unsigned int __nocast gfp_mask)
 {
 	struct bio *b = bio_alloc_bioset(gfp_mask, bio->bi_max_vecs, fs_bio_set);
 
-	if (b)
+	if (b) {
+		b->bi_destructor = bio_fs_destructor;
 		__bio_clone(b, bio);
+	}
 
 	return b;
 }
@@ -546,22 +556,34 @@ out_bmd:
 	return ERR_PTR(ret);
 }
 
-static struct bio *__bio_map_user(request_queue_t *q, struct block_device *bdev,
-				  unsigned long uaddr, unsigned int len,
-				  int write_to_vm)
+static struct bio *__bio_map_user_iov(request_queue_t *q,
+				      struct block_device *bdev,
+				      struct sg_iovec *iov, int iov_count,
+				      int write_to_vm)
 {
-	unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
-	unsigned long start = uaddr >> PAGE_SHIFT;
-	const int nr_pages = end - start;
-	int ret, offset, i;
+	int i, j;
+	int nr_pages = 0;
 	struct page **pages;
 	struct bio *bio;
+	int cur_page = 0;
+	int ret, offset;
 
-	/*
-	 * transfer and buffer must be aligned to at least hardsector
-	 * size for now, in the future we can relax this restriction
-	 */
-	if ((uaddr & queue_dma_alignment(q)) || (len & queue_dma_alignment(q)))
+	for (i = 0; i < iov_count; i++) {
+		unsigned long uaddr = (unsigned long)iov[i].iov_base;
+		unsigned long len = iov[i].iov_len;
+		unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
+		unsigned long start = uaddr >> PAGE_SHIFT;
+
+		nr_pages += end - start;
+		/*
+		 * transfer and buffer must be aligned to at least hardsector
+		 * size for now, in the future we can relax this restriction
+		 */
+		if ((uaddr & queue_dma_alignment(q)) || (len & queue_dma_alignment(q)))
+			return ERR_PTR(-EINVAL);
+	}
+
+	if (!nr_pages)
 		return ERR_PTR(-EINVAL);
 
 	bio = bio_alloc(GFP_KERNEL, nr_pages);
@@ -573,42 +595,54 @@ static struct bio *__bio_map_user(request_queue_t *q, struct block_device *bdev,
 	if (!pages)
 		goto out;
 
-	down_read(&current->mm->mmap_sem);
-	ret = get_user_pages(current, current->mm, uaddr, nr_pages,
-						write_to_vm, 0, pages, NULL);
-	up_read(&current->mm->mmap_sem);
-
-	if (ret < nr_pages)
-		goto out;
-
-	bio->bi_bdev = bdev;
-
-	offset = uaddr & ~PAGE_MASK;
-	for (i = 0; i < nr_pages; i++) {
-		unsigned int bytes = PAGE_SIZE - offset;
-
-		if (len <= 0)
-			break;
-
-		if (bytes > len)
-			bytes = len;
+	memset(pages, 0, nr_pages * sizeof(struct page *));
+
+	for (i = 0; i < iov_count; i++) {
+		unsigned long uaddr = (unsigned long)iov[i].iov_base;
+		unsigned long len = iov[i].iov_len;
+		unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT;
+		unsigned long start = uaddr >> PAGE_SHIFT;
+		const int local_nr_pages = end - start;
+		const int page_limit = cur_page + local_nr_pages;
+