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Commit 839a3f76 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 

Pull btrfs fixes from Chris Mason:
 "These are bug fixes, including a really old fsync bug, and a few trace
  points to help us track down problems in the quota code"

* 'for-linus-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: fix file/data loss caused by fsync after rename and new inode
  btrfs: Reset IO error counters before start of device replacing
  btrfs: Add qgroup tracing
  Btrfs: don't use src fd for printk
  btrfs: fallback to vmalloc in btrfs_compare_tree
  btrfs: handle non-fatal errors in btrfs_qgroup_inherit()
  btrfs: Output more info for enospc_debug mount option
  Btrfs: fix invalid reference in replace_path
  Btrfs: Improve FL_KEEP_SIZE handling in fallocate
parents 67592126 56f23fdb

fs/btrfs/ctree.c

+8 −4
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/sched.h>

#include <linux/slab.h>

#include <linux/rbtree.h>

#include <linux/vmalloc.h>

#include "ctree.h"

#include "disk-io.h"

#include "transaction.h"
@@ -5361,11 +5362,14 @@ int btrfs_compare_trees(struct btrfs_root *left_root, 
		goto out;

	}



	tmp_buf = kmalloc(left_root->nodesize, GFP_KERNEL);

	tmp_buf = kmalloc(left_root->nodesize, GFP_KERNEL | __GFP_NOWARN);

	if (!tmp_buf) {

		tmp_buf = vmalloc(left_root->nodesize);

		if (!tmp_buf) {

			ret = -ENOMEM;

			goto out;

		}

	}



	left_path->search_commit_root = 1;

	left_path->skip_locking = 1;
@@ -5565,7 +5569,7 @@ int btrfs_compare_trees(struct btrfs_root *left_root, 
out:

	btrfs_free_path(left_path);

	btrfs_free_path(right_path);

	kfree(tmp_buf);

	kvfree(tmp_buf);

	return ret;

}

fs/btrfs/dev-replace.c

+2 −0
Original line number Diff line number Diff line
@@ -394,6 +394,8 @@ int btrfs_dev_replace_start(struct btrfs_root *root, 
	dev_replace->cursor_right = 0;

	dev_replace->is_valid = 1;

	dev_replace->item_needs_writeback = 1;

	atomic64_set(&dev_replace->num_write_errors, 0);

	atomic64_set(&dev_replace->num_uncorrectable_read_errors, 0);

	args->result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR;

	btrfs_dev_replace_unlock(dev_replace, 1);

fs/btrfs/extent-tree.c

+19 −2
Original line number Diff line number Diff line
@@ -9386,15 +9386,23 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr) 
	u64 dev_min = 1;

	u64 dev_nr = 0;

	u64 target;

	int debug;

	int index;

	int full = 0;

	int ret = 0;



	debug = btrfs_test_opt(root, ENOSPC_DEBUG);



	block_group = btrfs_lookup_block_group(root->fs_info, bytenr);



	/* odd, couldn't find the block group, leave it alone */

	if (!block_group)

	if (!block_group) {

		if (debug)

			btrfs_warn(root->fs_info,

				   "can't find block group for bytenr %llu",

				   bytenr);

		return -1;

	}



	min_free = btrfs_block_group_used(&block_group->item);
@@ -9448,8 +9456,13 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr) 
		 * this is just a balance, so if we were marked as full

		 * we know there is no space for a new chunk

		 */

		if (full)

		if (full) {

			if (debug)

				btrfs_warn(root->fs_info,

					"no space to alloc new chunk for block group %llu",

					block_group->key.objectid);

			goto out;

		}



		index = get_block_group_index(block_group);

	}
@@ -9496,6 +9509,10 @@ int btrfs_can_relocate(struct btrfs_root *root, u64 bytenr) 
			ret = -1;

		}

	}

	if (debug && ret == -1)

		btrfs_warn(root->fs_info,

			"no space to allocate a new chunk for block group %llu",

			block_group->key.objectid);

	mutex_unlock(&root->fs_info->chunk_mutex);

	btrfs_end_transaction(trans, root);

out:

fs/btrfs/file.c

+6 −3
Original line number Diff line number Diff line
@@ -2682,9 +2682,12 @@ static long btrfs_fallocate(struct file *file, int mode, 
		return ret;



	inode_lock(inode);

	ret = inode_newsize_ok(inode, alloc_end);



	if (!(mode & FALLOC_FL_KEEP_SIZE) && offset + len > inode->i_size) {

		ret = inode_newsize_ok(inode, offset + len);

		if (ret)

			goto out;

	}



	/*

	 * TODO: Move these two operations after we have checked

fs/btrfs/ioctl.c

+1 −1
Original line number Diff line number Diff line
@@ -1654,7 +1654,7 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file, 


		src_inode = file_inode(src.file);

		if (src_inode->i_sb != file_inode(file)->i_sb) {

			btrfs_info(BTRFS_I(src_inode)->root->fs_info,

			btrfs_info(BTRFS_I(file_inode(file))->root->fs_info,

				   "Snapshot src from another FS");

			ret = -EXDEV;

		} else if (!inode_owner_or_capable(src_inode)) {