Merge branch 'p-ti-linux-3.14.y-android' of git://git.omapzoom.org/kernel/omap into p-ti-linux-3.14.y-android

* 'p-ti-linux-3.14.y-android' of git://git.omapzoom.org/kernel/omap: (216 commits)
  usb: dwc3: debugfs: dual role switch through debugfs entries
  ARM: DRA7: dts: Add coprocessor nodes for iva
  remoteproc/pruss: fix shutdown for manually booted PRU cores
  remoteproc/pruss: fix the cleanup path in pru_rproc_probe()
  UAPI: Increasing the max FRAME number to 128.
  gpio: mcp23s08: Set initial direction and value from DT
  firmware: Load VPDMA firmware from kernel
  iommu/omap: Fix a sleeping function invocation in atomic context bug
  media: ti-vpe: vpe: Add RGB565 and RGB5551 support
  media: ti-vpe: vpe: Post next descriptor only for list complete IRQ
  media: ti-vpe: vpe: Setup srcdst parameters in streamON
  omapdrm: Expose the OMAP pre-multiplied alpha property through DRM
  omapdrm: Expose the OMAP global alpha property through DRM
  ti_fragments: audio_display: enable BACKLIGHT_GPIO and PANEL_DPI
  ti_fragments: audio_display: clean up
  arm/dts: am57xx-evm: Add LCD support
  backlight: gpio-backlight: Add DT support
  arm/dts: dra7xx: fix display compatible strings
  OMAPDSS: add missing 'omapdss' prefixes to display drivers
  OMAPDSS: add dra7-dss to dt conversion list
  ...

Signed-off-by: Praneeth Bajjuri <praneeth@ti.com>

17 files changed, 69 insertions, 68 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 1a858947006..fa9f9004909 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4507,7 +4507,8 @@ static void check_buffer_tree_ref(struct extent_buffer *eb)
 	spin_unlock(&eb->refs_lock);
 }
 
-static void mark_extent_buffer_accessed(struct extent_buffer *eb)
+static void mark_extent_buffer_accessed(struct extent_buffer *eb,
+		struct page *accessed)
 {
 	unsigned long num_pages, i;
 
@@ -4516,7 +4517,8 @@ static void mark_extent_buffer_accessed(struct extent_buffer *eb)
 	num_pages = num_extent_pages(eb->start, eb->len);
 	for (i = 0; i < num_pages; i++) {
 		struct page *p = extent_buffer_page(eb, i);
-		mark_page_accessed(p);
+		if (p != accessed)
+			mark_page_accessed(p);
 	}
 }
 
@@ -4530,7 +4532,7 @@ struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info,
 			       start >> PAGE_CACHE_SHIFT);
 	if (eb && atomic_inc_not_zero(&eb->refs)) {
 		rcu_read_unlock();
-		mark_extent_buffer_accessed(eb);
+		mark_extent_buffer_accessed(eb, NULL);
 		return eb;
 	}
 	rcu_read_unlock();
@@ -4578,7 +4580,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
 				spin_unlock(&mapping->private_lock);
 				unlock_page(p);
 				page_cache_release(p);
-				mark_extent_buffer_accessed(exists);
+				mark_extent_buffer_accessed(exists, p);
 				goto free_eb;
 			}
 
@@ -4593,7 +4595,6 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
 		attach_extent_buffer_page(eb, p);
 		spin_unlock(&mapping->private_lock);
 		WARN_ON(PageDirty(p));
-		mark_page_accessed(p);
 		eb->pages[i] = p;
 		if (!PageUptodate(p))
 			uptodate = 0;
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index f6d00df99a8..279b06ef552 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -470,11 +470,12 @@ static void btrfs_drop_pages(struct page **pages, size_t num_pages)
 	for (i = 0; i < num_pages; i++) {
 		/* page checked is some magic around finding pages that
 		 * have been modified without going through btrfs_set_page_dirty
-		 * clear it here
+		 * clear it here. There should be no need to mark the pages
+		 * accessed as prepare_pages should have marked them accessed
+		 * in prepare_pages via find_or_create_page()
 		 */
 		ClearPageChecked(pages[i]);
 		unlock_page(pages[i]);
-		mark_page_accessed(pages[i]);
 		page_cache_release(pages[i]);
 	}
 }
diff --git a/fs/buffer.c b/fs/buffer.c
index 4d06a573d19..eef21c69f2d 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -227,7 +227,7 @@ __find_get_block_slow(struct block_device *bdev, sector_t block)
 	int all_mapped = 1;
 
 	index = block >> (PAGE_CACHE_SHIFT - bd_inode->i_blkbits);
-	page = find_get_page(bd_mapping, index);
+	page = find_get_page_flags(bd_mapping, index, FGP_ACCESSED);
 	if (!page)
 		goto out;
 
@@ -1368,12 +1368,13 @@ __find_get_block(struct block_device *bdev, sector_t block, unsigned size)
 	struct buffer_head *bh = lookup_bh_lru(bdev, block, size);
 
 	if (bh == NULL) {
+		/* __find_get_block_slow will mark the page accessed */
 		bh = __find_get_block_slow(bdev, block);
 		if (bh)
 			bh_lru_install(bh);
-	}
-	if (bh)
+	} else
 		touch_buffer(bh);
+
 	return bh;
 }
 EXPORT_SYMBOL(__find_get_block);
@@ -1485,16 +1486,27 @@ EXPORT_SYMBOL(set_bh_page);
 /*
  * Called when truncating a buffer on a page completely.
  */
+
+/* Bits that are cleared during an invalidate */
+#define BUFFER_FLAGS_DISCARD \
+	(1 << BH_Mapped | 1 << BH_New | 1 << BH_Req | \
+	 1 << BH_Delay | 1 << BH_Unwritten)
+
 static void discard_buffer(struct buffer_head * bh)
 {
+	unsigned long b_state, b_state_old;
+
 	lock_buffer(bh);
 	clear_buffer_dirty(bh);
 	bh->b_bdev = NULL;
-	clear_buffer_mapped(bh);
-	clear_buffer_req(bh);
-	clear_buffer_new(bh);
-	clear_buffer_delay(bh);
-	clear_buffer_unwritten(bh);
+	b_state = bh->b_state;
+	for (;;) {
+		b_state_old = cmpxchg(&bh->b_state, b_state,
+				      (b_state & ~BUFFER_FLAGS_DISCARD));
+		if (b_state_old == b_state)
+			break;
+		b_state = b_state_old;
+	}
 	unlock_buffer(bh);
 }
 
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 77492301cc2..dfc95646b88 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -86,21 +86,16 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
 	}
 
 	src_inode = src_file.file->f_dentry->d_inode;
+	rc = -EINVAL;
+	if (S_ISDIR(src_inode->i_mode))
+		goto out_fput;
 
 	/*
 	 * Note: cifs case is easier than btrfs since server responsible for
 	 * checks for proper open modes and file type and if it wants
 	 * server could even support copy of range where source = target
 	 */
-
-	/* so we do not deadlock racing two ioctls on same files */
-	if (target_inode < src_inode) {
-		mutex_lock_nested(&target_inode->i_mutex, I_MUTEX_PARENT);
-		mutex_lock_nested(&src_inode->i_mutex, I_MUTEX_CHILD);
-	} else {
-		mutex_lock_nested(&src_inode->i_mutex, I_MUTEX_PARENT);
-		mutex_lock_nested(&target_inode->i_mutex, I_MUTEX_CHILD);
-	}
+	lock_two_nondirectories(target_inode, src_inode);
 
 	/* determine range to clone */
 	rc = -EINVAL;
@@ -124,13 +119,7 @@ static long cifs_ioctl_clone(unsigned int xid, struct file *dst_file,
 out_unlock:
 	/* although unlocking in the reverse order from locking is not
 	   strictly necessary here it is a little cleaner to be consistent */
-	if (target_inode < src_inode) {
-		mutex_unlock(&src_inode->i_mutex);
-		mutex_unlock(&target_inode->i_mutex);
-	} else {
-		mutex_unlock(&target_inode->i_mutex);
-		mutex_unlock(&src_inode->i_mutex);
-	}
+	unlock_two_nondirectories(src_inode, target_inode);
 out_fput:
 	fdput(src_file);
 out_drop_write:
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 17728b7b642..bbf23c718ca 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1044,6 +1044,8 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group)
 	 * allocating. If we are looking at the buddy cache we would
 	 * have taken a reference using ext4_mb_load_buddy and that
 	 * would have pinned buddy page to page cache.
+	 * The call to ext4_mb_get_buddy_page_lock will mark the
+	 * page accessed.
 	 */
 	ret = ext4_mb_get_buddy_page_lock(sb, group, &e4b);
 	if (ret || !EXT4_MB_GRP_NEED_INIT(this_grp)) {
@@ -1062,7 +1064,6 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group)
 		ret = -EIO;
 		goto err;
 	}
-	mark_page_accessed(page);
 
 	if (e4b.bd_buddy_page == NULL) {
 		/*
@@ -1082,7 +1083,6 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group)
 		ret = -EIO;
 		goto err;
 	}
-	mark_page_accessed(page);
 err:
 	ext4_mb_put_buddy_page_lock(&e4b);
 	return ret;
@@ -1141,7 +1141,7 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
 
 	/* we could use find_or_create_page(), but it locks page
 	 * what we'd like to avoid in fast path ... */
-	page = find_get_page(inode->i_mapping, pnum);
+	page = find_get_page_flags(inode->i_mapping, pnum, FGP_ACCESSED);
 	if (page == NULL || !PageUptodate(page)) {
 		if (page)
 			/*
@@ -1172,15 +1172,16 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
 		ret = -EIO;
 		goto err;
 	}
+
+	/* Pages marked accessed already */
 	e4b->bd_bitmap_page = page;
 	e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize);
-	mark_page_accessed(page);
 
 	block++;
 	pnum = block / blocks_per_page;
 	poff = block % blocks_per_page;
 
-	page = find_get_page(inode->i_mapping, pnum);
+	page = find_get_page_flags(inode->i_mapping, pnum, FGP_ACCESSED);
 	if (page == NULL || !PageUptodate(page)) {
 		if (page)
 			page_cache_release(page);
@@ -1201,9 +1202,10 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group,
 		ret = -EIO;
 		goto err;
 	}
+
+	/* Pages marked accessed already */
 	e4b->bd_buddy_page = page;
 	e4b->bd_buddy = page_address(page) + (poff * sb->s_blocksize);
-	mark_page_accessed(page);
 
 	BUG_ON(e4b->bd_bitmap_page == NULL);
 	BUG_ON(e4b->bd_buddy_page == NULL);
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 293d0486a40..5c6fe278fb6 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -71,7 +71,6 @@ repeat:
 		goto repeat;
 	}
 out:
-	mark_page_accessed(page);
 	return page;
 }
 
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index b0649b76eb4..bb6478acb36 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -969,7 +969,6 @@ repeat:
 	}
 got_it:
 	f2fs_bug_on(nid != nid_of_node(page));
-	mark_page_accessed(page);
 	return page;
 }
 
@@ -1024,7 +1023,6 @@ page_hit:
 		f2fs_put_page(page, 1);
 		return ERR_PTR(-EIO);
 	}
-	mark_page_accessed(page);
 	return page;
 }
 
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index bea90c6b2be..ccd3d19917c 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1618,7 +1618,7 @@ out_finish:
 
 static void fuse_retrieve_end(struct fuse_conn *fc, struct fuse_req *req)
 {
-	release_pages(req->pages, req->num_pages, 0);
+	release_pages(req->pages, req->num_pages, false);
 }
 
 static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode,
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a91d3b4d32f..d8a60270581 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1006,8 +1006,6 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
 		tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
 		flush_dcache_page(page);
 
-		mark_page_accessed(page);
-
 		if (!tmp) {
 			unlock_page(page);
 			page_cache_release(page);
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 49436fa7cd4..4ccb60d943b 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -517,7 +517,6 @@ int gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos,
 		p = kmap_atomic(page);
 		memcpy(buf + copied, p + offset, amt);
 		kunmap_atomic(p);
-		mark_page_accessed(page);
 		page_cache_release(page);
 		copied += amt;
 		index++;
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index b82a9c99e18..e7b149614f5 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -136,7 +136,8 @@ struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create)
 			yield();
 		}
 	} else {
-		page = find_lock_page(mapping, index);
+		page = find_get_page_flags(mapping, index,
+						FGP_LOCK|FGP_ACCESSED);
 		if (!page)
 			return NULL;
 	}
@@ -153,7 +154,6 @@ struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create)
 		map_bh(bh, sdp->sd_vfs, blkno);
 
 	unlock_page(page);
-	mark_page_accessed(page);
 	page_cache_release(page);
 
 	return bh;
diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index 223e1cb1434..59a53f66400 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -137,10 +137,6 @@ lockd(void *vrqstp)
 
 	dprintk("NFS locking service started (ver " LOCKD_VERSION ").\n");
 
-	if (!nlm_timeout)
-		nlm_timeout = LOCKD_DFLT_TIMEO;
-	nlmsvc_timeout = nlm_timeout * HZ;
-
 	/*
 	 * The main request loop. We don't terminate until the last
 	 * NFS mount or NFS daemon has gone away.
@@ -346,6 +342,10 @@ static struct svc_serv *lockd_create_svc(void)
 		printk(KERN_WARNING
 			"lockd_up: no pid, %d users??\n", nlmsvc_users);
 
+	if (!nlm_timeout)
+		nlm_timeout = LOCKD_DFLT_TIMEO;
+	nlmsvc_timeout = nlm_timeout * HZ;
+
 	serv = svc_create(&nlmsvc_program, LOCKD_BUFSIZE, NULL);
 	if (!serv) {
 		printk(KERN_WARNING "lockd_up: create service failed\n");
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 1abe4f55dea..037f9572b94 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -565,20 +565,14 @@ static bool nfs4_match_clientids(struct nfs_client *a, struct nfs_client *b)
 }
 
 /*
- * Returns true if the server owners match
+ * Returns true if the server major ids match
  */
 static bool
-nfs4_match_serverowners(struct nfs_client *a, struct nfs_client *b)
+nfs4_check_clientid_trunking(struct nfs_client *a, struct nfs_client *b)
 {
 	struct nfs41_server_owner *o1 = a->cl_serverowner;
 	struct nfs41_server_owner *o2 = b->cl_serverowner;
 
-	if (o1->minor_id != o2->minor_id) {
-		dprintk("NFS: --> %s server owner minor IDs do not match\n",
-			__func__);
-		return false;
-	}
-
 	if (o1->major_id_sz != o2->major_id_sz)
 		goto out_major_mismatch;
 	if (memcmp(o1->major_id, o2->major_id, o1->major_id_sz) != 0)
@@ -654,7 +648,12 @@ int nfs41_walk_client_list(struct nfs_client *new,
 		if (!nfs4_match_clientids(pos, new))
 			continue;
 
-		if (!nfs4_match_serverowners(pos, new))
+		/*
+		 * Note that session trunking is just a special subcase of
+		 * client id trunking. In either case, we want to fall back
+		 * to using the existing nfs_client.
+		 */
+		if (!nfs4_check_clientid_trunking(pos, new))
 			continue;
 
 		atomic_inc(&pos->cl_count);
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index 74825be65b7..fbb9dfb7b1d 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -288,20 +288,25 @@ void fsnotify_unmount_inodes(struct list_head *list)
 		spin_unlock(&inode->i_lock);
 
 		/* In case the dropping of a reference would nuke next_i. */
-		if ((&next_i->i_sb_list != list) &&
-		    atomic_read(&next_i->i_count)) {
+		while (&next_i->i_sb_list != list) {
 			spin_lock(&next_i->i_lock);
-			if (!(next_i->i_state & (I_FREEING | I_WILL_FREE))) {
+			if (!(next_i->i_state & (I_FREEING | I_WILL_FREE)) &&
+						atomic_read(&next_i->i_count)) {
 				__iget(next_i);
 				need_iput = next_i;
+				spin_unlock(&next_i->i_lock);
+				break;
 			}
 			spin_unlock(&next_i->i_lock);
+			next_i = list_entry(next_i->i_sb_list.next,
+						struct inode, i_sb_list);
 		}
 
 		/*
-		 * We can safely drop inode_sb_list_lock here because we hold
-		 * references on both inode and next_i.  Also no new inodes
-		 * will be added since the umount has begun.
+		 * We can safely drop inode_sb_list_lock here because either
+		 * we actually hold references on both inode and next_i or
+		 * end of list.  Also no new inodes will be added since the
+		 * umount has begun.
 		 */
 		spin_unlock(&inode_sb_list_lock);
 
diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c
index a27e3fecefa..250ed5b20c8 100644
--- a/fs/ntfs/attrib.c
+++ b/fs/ntfs/attrib.c
@@ -1748,7 +1748,6 @@ int ntfs_attr_make_non_resident(ntfs_inode *ni, const u32 data_size)
 	if (page) {
 		set_page_dirty(page);
 		unlock_page(page);
-		mark_page_accessed(page);
 		page_cache_release(page);
 	}
 	ntfs_debug("Done.");
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index db9bd8a3172..86ddab916b6 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2060,7 +2060,6 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb,
 		}
 		do {
 			unlock_page(pages[--do_pages]);
-			mark_page_accessed(pages[do_pages]);
 			page_cache_release(pages[do_pages]);
 		} while (do_pages);
 		if (unlikely(status))
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 6f599c62f0c..dbd02723544 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -159,7 +159,7 @@ static int show_stat(struct seq_file *p, void *v)
 
 	/* sum again ? it could be updated? */
 	for_each_irq_nr(j)
-		seq_put_decimal_ull(p, ' ', kstat_irqs(j));
+		seq_put_decimal_ull(p, ' ', kstat_irqs_usr(j));
 
 	seq_printf(p,
 		"\nctxt %llu\n"