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authorLinus Torvalds <torvalds@linux-foundation.org>2022-08-03 10:35:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-08-03 10:35:43 -0700
commitf00654007fe1c154dafbdc1f5953c132e8c27c38 (patch)
tree69dd4b82b1a1be18b789ef3010b13e4834c8e353 /drivers/virtio
parente087437a6fef3acc11aaa1ade84731fe1571b808 (diff)
parentcf5e7a652168fba45410ac6f5b363fcf8677dea5 (diff)
Merge tag 'folio-6.0' of git://git.infradead.org/users/willy/pagecache
Pull folio updates from Matthew Wilcox: - Fix an accounting bug that made NR_FILE_DIRTY grow without limit when running xfstests - Convert more of mpage to use folios - Remove add_to_page_cache() and add_to_page_cache_locked() - Convert find_get_pages_range() to filemap_get_folios() - Improvements to the read_cache_page() family of functions - Remove a few unnecessary checks of PageError - Some straightforward filesystem conversions to use folios - Split PageMovable users out from address_space_operations into their own movable_operations - Convert aops->migratepage to aops->migrate_folio - Remove nobh support (Christoph Hellwig) * tag 'folio-6.0' of git://git.infradead.org/users/willy/pagecache: (78 commits) fs: remove the NULL get_block case in mpage_writepages fs: don't call ->writepage from __mpage_writepage fs: remove the nobh helpers jfs: stop using the nobh helper ext2: remove nobh support ntfs3: refactor ntfs_writepages mm/folio-compat: Remove migration compatibility functions fs: Remove aops->migratepage() secretmem: Convert to migrate_folio hugetlb: Convert to migrate_folio aio: Convert to migrate_folio f2fs: Convert to filemap_migrate_folio() ubifs: Convert to filemap_migrate_folio() btrfs: Convert btrfs_migratepage to migrate_folio mm/migrate: Add filemap_migrate_folio() mm/migrate: Convert migrate_page() to migrate_folio() nfs: Convert to migrate_folio btrfs: Convert btree_migratepage to migrate_folio mm/migrate: Convert expected_page_refs() to folio_expected_refs() mm/migrate: Convert buffer_migrate_page() to buffer_migrate_folio() ...
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio_balloon.c47
1 files changed, 2 insertions, 45 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index b9737da6c4dd..bd360b91e9d3 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -17,9 +17,6 @@
#include <linux/oom.h>
#include <linux/wait.h>
#include <linux/mm.h>
-#include <linux/mount.h>
-#include <linux/magic.h>
-#include <linux/pseudo_fs.h>
#include <linux/page_reporting.h>
/*
@@ -42,10 +39,6 @@
(1 << (VIRTIO_BALLOON_HINT_BLOCK_ORDER + PAGE_SHIFT))
#define VIRTIO_BALLOON_HINT_BLOCK_PAGES (1 << VIRTIO_BALLOON_HINT_BLOCK_ORDER)
-#ifdef CONFIG_BALLOON_COMPACTION
-static struct vfsmount *balloon_mnt;
-#endif
-
enum virtio_balloon_vq {
VIRTIO_BALLOON_VQ_INFLATE,
VIRTIO_BALLOON_VQ_DEFLATE,
@@ -805,18 +798,6 @@ static int virtballoon_migratepage(struct balloon_dev_info *vb_dev_info,
return MIGRATEPAGE_SUCCESS;
}
-
-static int balloon_init_fs_context(struct fs_context *fc)
-{
- return init_pseudo(fc, BALLOON_KVM_MAGIC) ? 0 : -ENOMEM;
-}
-
-static struct file_system_type balloon_fs = {
- .name = "balloon-kvm",
- .init_fs_context = balloon_init_fs_context,
- .kill_sb = kill_anon_super,
-};
-
#endif /* CONFIG_BALLOON_COMPACTION */
static unsigned long shrink_free_pages(struct virtio_balloon *vb,
@@ -909,19 +890,7 @@ static int virtballoon_probe(struct virtio_device *vdev)
goto out_free_vb;
#ifdef CONFIG_BALLOON_COMPACTION
- balloon_mnt = kern_mount(&balloon_fs);
- if (IS_ERR(balloon_mnt)) {
- err = PTR_ERR(balloon_mnt);
- goto out_del_vqs;
- }
-
vb->vb_dev_info.migratepage = virtballoon_migratepage;
- vb->vb_dev_info.inode = alloc_anon_inode(balloon_mnt->mnt_sb);
- if (IS_ERR(vb->vb_dev_info.inode)) {
- err = PTR_ERR(vb->vb_dev_info.inode);
- goto out_kern_unmount;
- }
- vb->vb_dev_info.inode->i_mapping->a_ops = &balloon_aops;
#endif
if (virtio_has_feature(vdev, VIRTIO_BALLOON_F_FREE_PAGE_HINT)) {
/*
@@ -930,13 +899,13 @@ static int virtballoon_probe(struct virtio_device *vdev)
*/
if (virtqueue_get_vring_size(vb->free_page_vq) < 2) {
err = -ENOSPC;
- goto out_iput;
+ goto out_del_vqs;
}
vb->balloon_wq = alloc_workqueue("balloon-wq",
WQ_FREEZABLE | WQ_CPU_INTENSIVE, 0);
if (!vb->balloon_wq) {
err = -ENOMEM;
- goto out_iput;
+ goto out_del_vqs;
}
INIT_WORK(&vb->report_free_page_work, report_free_page_func);
vb->cmd_id_received_cache = VIRTIO_BALLOON_CMD_ID_STOP;
@@ -1030,13 +999,7 @@ out_unregister_shrinker:
out_del_balloon_wq:
if (virtio_has_feature(vdev, VIRTIO_BALLOON_F_FREE_PAGE_HINT))
destroy_workqueue(vb->balloon_wq);
-out_iput:
-#ifdef CONFIG_BALLOON_COMPACTION
- iput(vb->vb_dev_info.inode);
-out_kern_unmount:
- kern_unmount(balloon_mnt);
out_del_vqs:
-#endif
vdev->config->del_vqs(vdev);
out_free_vb:
kfree(vb);
@@ -1083,12 +1046,6 @@ static void virtballoon_remove(struct virtio_device *vdev)
}
remove_common(vb);
-#ifdef CONFIG_BALLOON_COMPACTION
- if (vb->vb_dev_info.inode)
- iput(vb->vb_dev_info.inode);
-
- kern_unmount(balloon_mnt);
-#endif
kfree(vb);
}