Commit 27c9d772 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 

Pull btrfs fixes from Chris Mason:
 "This has a few fixes from Filipe, along with a readdir fix from Dave
  that we've been testing for some time"

* 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: properly set the termination value of ctx->pos in readdir
  Btrfs: fix hang on extent buffer lock caused by the inode_paths ioctl
  Btrfs: remove no longer used function extent_read_full_page_nolock()
  Btrfs: fix page reading in extent_same ioctl leading to csum errors
  Btrfs: fix invalid page accesses in extent_same (dedup) ioctl
parents dfc85286 bc4ef759

fs/btrfs/backref.c

+6 −4
Original line number Diff line number Diff line
@@ -1406,6 +1406,7 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, 
			read_extent_buffer(eb, dest + bytes_left,

					   name_off, name_len);

		if (eb != eb_in) {

			if (!path->skip_locking)

				btrfs_tree_read_unlock_blocking(eb);

			free_extent_buffer(eb);

		}
@@ -1426,9 +1427,10 @@ char *btrfs_ref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, 
		eb = path->nodes[0];

		/* make sure we can use eb after releasing the path */

		if (eb != eb_in) {

			atomic_inc(&eb->refs);

			btrfs_tree_read_lock(eb);

			if (!path->skip_locking)

				btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);

			path->nodes[0] = NULL;

			path->locks[0] = 0;

		}

		btrfs_release_path(path);

		iref = btrfs_item_ptr(eb, slot, struct btrfs_inode_ref);

fs/btrfs/compression.c

+1 −5
Original line number Diff line number Diff line
@@ -637,10 +637,6 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, 
	faili = nr_pages - 1;

	cb->nr_pages = nr_pages;



	/* In the parent-locked case, we only locked the range we are

	 * interested in.  In all other cases, we can opportunistically

	 * cache decompressed data that goes beyond the requested range. */

	if (!(bio_flags & EXTENT_BIO_PARENT_LOCKED))

	add_ra_bio_pages(inode, em_start + em_len, cb);



	/* include any pages we added in add_ra-bio_pages */

fs/btrfs/delayed-inode.c

+2 −1
Original line number Diff line number Diff line
@@ -1689,7 +1689,7 @@ int btrfs_should_delete_dir_index(struct list_head *del_list, 
 *

 */

int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,

				    struct list_head *ins_list)

				    struct list_head *ins_list, bool *emitted)

{

	struct btrfs_dir_item *di;

	struct btrfs_delayed_item *curr, *next;
@@ -1733,6 +1733,7 @@ int btrfs_readdir_delayed_dir_index(struct dir_context *ctx, 


		if (over)

			return 1;

		*emitted = true;

	}

	return 0;

}

fs/btrfs/delayed-inode.h

+1 −1
Original line number Diff line number Diff line
@@ -144,7 +144,7 @@ void btrfs_put_delayed_items(struct list_head *ins_list, 
int btrfs_should_delete_dir_index(struct list_head *del_list,

				  u64 index);

int btrfs_readdir_delayed_dir_index(struct dir_context *ctx,

				    struct list_head *ins_list);

				    struct list_head *ins_list, bool *emitted);



/* for init */

int __init btrfs_delayed_inode_init(void);

fs/btrfs/extent_io.c

+11 −34
Original line number Diff line number Diff line
@@ -2897,12 +2897,11 @@ static int __do_readpage(struct extent_io_tree *tree, 
	struct block_device *bdev;

	int ret;

	int nr = 0;

	int parent_locked = *bio_flags & EXTENT_BIO_PARENT_LOCKED;

	size_t pg_offset = 0;

	size_t iosize;

	size_t disk_io_size;

	size_t blocksize = inode->i_sb->s_blocksize;

	unsigned long this_bio_flag = *bio_flags & EXTENT_BIO_PARENT_LOCKED;

	unsigned long this_bio_flag = 0;



	set_page_extent_mapped(page);
@@ -2942,7 +2941,6 @@ static int __do_readpage(struct extent_io_tree *tree, 
			kunmap_atomic(userpage);

			set_extent_uptodate(tree, cur, cur + iosize - 1,

					    &cached, GFP_NOFS);

			if (!parent_locked)

			unlock_extent_cached(tree, cur,

					     cur + iosize - 1,

					     &cached, GFP_NOFS);
@@ -2952,7 +2950,6 @@ static int __do_readpage(struct extent_io_tree *tree, 
				      end - cur + 1, get_extent, em_cached);

		if (IS_ERR_OR_NULL(em)) {

			SetPageError(page);

			if (!parent_locked)

			unlock_extent(tree, cur, end);

			break;

		}
@@ -3038,9 +3035,6 @@ static int __do_readpage(struct extent_io_tree *tree, 


			set_extent_uptodate(tree, cur, cur + iosize - 1,

					    &cached, GFP_NOFS);

			if (parent_locked)

				free_extent_state(cached);

			else

			unlock_extent_cached(tree, cur,

					     cur + iosize - 1,

					     &cached, GFP_NOFS);
@@ -3052,7 +3046,6 @@ static int __do_readpage(struct extent_io_tree *tree, 
		if (test_range_bit(tree, cur, cur_end,

				   EXTENT_UPTODATE, 1, NULL)) {

			check_page_uptodate(tree, page);

			if (!parent_locked)

			unlock_extent(tree, cur, cur + iosize - 1);

			cur = cur + iosize;

			pg_offset += iosize;
@@ -3063,7 +3056,6 @@ static int __do_readpage(struct extent_io_tree *tree, 
		 */

		if (block_start == EXTENT_MAP_INLINE) {

			SetPageError(page);

			if (!parent_locked)

			unlock_extent(tree, cur, cur + iosize - 1);

			cur = cur + iosize;

			pg_offset += iosize;
@@ -3083,7 +3075,6 @@ static int __do_readpage(struct extent_io_tree *tree, 
			*bio_flags = this_bio_flag;

		} else {

			SetPageError(page);

			if (!parent_locked)

			unlock_extent(tree, cur, cur + iosize - 1);

		}

		cur = cur + iosize;
@@ -3213,20 +3204,6 @@ int extent_read_full_page(struct extent_io_tree *tree, struct page *page, 
	return ret;

}



int extent_read_full_page_nolock(struct extent_io_tree *tree, struct page *page,

				 get_extent_t *get_extent, int mirror_num)

{

	struct bio *bio = NULL;

	unsigned long bio_flags = EXTENT_BIO_PARENT_LOCKED;

	int ret;



	ret = __do_readpage(tree, page, get_extent, NULL, &bio, mirror_num,

			    &bio_flags, READ, NULL);

	if (bio)

		ret = submit_one_bio(READ, bio, mirror_num, bio_flags);

	return ret;

}



static noinline void update_nr_written(struct page *page,

				      struct writeback_control *wbc,

				      unsigned long nr_written)

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