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-rw-r--r--fs/btrfs/Kconfig1
-rw-r--r--fs/btrfs/ctree.h1
-rw-r--r--fs/btrfs/disk-io.c6
-rw-r--r--fs/btrfs/extent-tree.c2
-rw-r--r--fs/btrfs/extent_io.c4
-rw-r--r--fs/btrfs/file.c3
-rw-r--r--fs/btrfs/inode.c6
-rw-r--r--fs/btrfs/ioctl.c4
-rw-r--r--fs/btrfs/scrub.c4
-rw-r--r--fs/btrfs/super.c14
-rw-r--r--fs/btrfs/transaction.c2
-rw-r--r--fs/btrfs/tree-log.c1
12 files changed, 27 insertions, 21 deletions
diff --git a/fs/btrfs/Kconfig b/fs/btrfs/Kconfig
index a66768ebc8d1..80e9c18ea64f 100644
--- a/fs/btrfs/Kconfig
+++ b/fs/btrfs/Kconfig
@@ -8,6 +8,7 @@ config BTRFS_FS
select LZO_DECOMPRESS
select RAID6_PQ
select XOR_BLOCKS
+ select SRCU
help
Btrfs is a general purpose copy-on-write filesystem with extents,
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 5bd721a1516e..f9c89cae39ee 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1176,6 +1176,7 @@ struct btrfs_space_info {
struct percpu_counter total_bytes_pinned;
struct list_head list;
+ /* Protected by the spinlock 'lock'. */
struct list_head ro_bgs;
struct rw_semaphore groups_sem;
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 1577b91940dd..639f2663ed3f 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1724,12 +1724,11 @@ static int setup_bdi(struct btrfs_fs_info *info, struct backing_dev_info *bdi)
{
int err;
- bdi->capabilities = BDI_CAP_MAP_COPY;
- err = bdi_setup_and_register(bdi, "btrfs", BDI_CAP_MAP_COPY);
+ err = bdi_setup_and_register(bdi, "btrfs");
if (err)
return err;
- bdi->ra_pages = default_backing_dev_info.ra_pages;
+ bdi->ra_pages = VM_MAX_READAHEAD * 1024 / PAGE_CACHE_SIZE;
bdi->congested_fn = btrfs_congested_fn;
bdi->congested_data = info;
return 0;
@@ -2329,7 +2328,6 @@ int open_ctree(struct super_block *sb,
*/
fs_info->btree_inode->i_size = OFFSET_MAX;
fs_info->btree_inode->i_mapping->a_ops = &btree_aops;
- fs_info->btree_inode->i_mapping->backing_dev_info = &fs_info->bdi;
RB_CLEAR_NODE(&BTRFS_I(fs_info->btree_inode)->rb_node);
extent_io_tree_init(&BTRFS_I(fs_info->btree_inode)->io_tree,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index d1ca86ea9993..8b353ad02f03 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -9408,7 +9408,6 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
* are still on the list after taking the semaphore
*/
list_del_init(&block_group->list);
- list_del_init(&block_group->ro_list);
if (list_empty(&block_group->space_info->block_groups[index])) {
kobj = block_group->space_info->block_group_kobjs[index];
block_group->space_info->block_group_kobjs[index] = NULL;
@@ -9457,6 +9456,7 @@ int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
btrfs_remove_free_space_cache(block_group);
spin_lock(&block_group->space_info->lock);
+ list_del_init(&block_group->ro_list);
block_group->space_info->total_bytes -= block_group->key.offset;
block_group->space_info->bytes_readonly -= block_group->key.offset;
block_group->space_info->disk_total -= block_group->key.offset * factor;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index d13ceadcbf18..d688cfe5d496 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1408,8 +1408,8 @@ int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end)
while (index <= end_index) {
page = find_get_page(inode->i_mapping, index);
BUG_ON(!page); /* Pages should be in the extent_io_tree */
- account_page_redirty(page);
__set_page_dirty_nobuffers(page);
+ account_page_redirty(page);
page_cache_release(page);
index++;
}
@@ -2191,7 +2191,7 @@ void btrfs_free_io_failure_record(struct inode *inode, u64 start, u64 end)
next = next_state(state);
- failrec = (struct io_failure_record *)state->private;
+ failrec = (struct io_failure_record *)(unsigned long)state->private;
free_extent_state(state);
kfree(failrec);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 6351947c9bb0..30982bbd31c3 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1746,7 +1746,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
mutex_lock(&inode->i_mutex);
- current->backing_dev_info = inode->i_mapping->backing_dev_info;
+ current->backing_dev_info = inode_to_bdi(inode);
err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
if (err) {
mutex_unlock(&inode->i_mutex);
@@ -2081,7 +2081,6 @@ static const struct vm_operations_struct btrfs_file_vm_ops = {
.fault = filemap_fault,
.map_pages = filemap_map_pages,
.page_mkwrite = btrfs_page_mkwrite,
- .remap_pages = generic_file_remap_pages,
};
static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index aa1fb534f69f..d2e732d7af52 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3693,7 +3693,6 @@ cache_acl:
switch (inode->i_mode & S_IFMT) {
case S_IFREG:
inode->i_mapping->a_ops = &btrfs_aops;
- inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
inode->i_fop = &btrfs_file_operations;
inode->i_op = &btrfs_file_inode_operations;
@@ -3708,7 +3707,6 @@ cache_acl:
case S_IFLNK:
inode->i_op = &btrfs_symlink_inode_operations;
inode->i_mapping->a_ops = &btrfs_symlink_aops;
- inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
break;
default:
inode->i_op = &btrfs_special_inode_operations;
@@ -6190,7 +6188,6 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
inode->i_fop = &btrfs_file_operations;
inode->i_op = &btrfs_file_inode_operations;
inode->i_mapping->a_ops = &btrfs_aops;
- inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
@@ -9336,7 +9333,6 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
inode->i_fop = &btrfs_file_operations;
inode->i_op = &btrfs_file_inode_operations;
inode->i_mapping->a_ops = &btrfs_aops;
- inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
@@ -9380,7 +9376,6 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
inode->i_op = &btrfs_symlink_inode_operations;
inode->i_mapping->a_ops = &btrfs_symlink_aops;
- inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
inode_set_bytes(inode, name_len);
btrfs_i_size_write(inode, name_len);
err = btrfs_update_inode(trans, root, inode);
@@ -9592,7 +9587,6 @@ static int btrfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
inode->i_op = &btrfs_file_inode_operations;
inode->i_mapping->a_ops = &btrfs_aops;
- inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
ret = btrfs_init_inode_security(trans, inode, dir, NULL);
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index d49fe8a0f6b5..74609b931ba5 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -776,11 +776,11 @@ static int btrfs_may_delete(struct inode *dir, struct dentry *victim, int isdir)
IS_IMMUTABLE(victim->d_inode) || IS_SWAPFILE(victim->d_inode))
return -EPERM;
if (isdir) {
- if (!S_ISDIR(victim->d_inode->i_mode))
+ if (!d_is_dir(victim))
return -ENOTDIR;
if (IS_ROOT(victim))
return -EBUSY;
- } else if (S_ISDIR(victim->d_inode->i_mode))
+ } else if (d_is_dir(victim))
return -EISDIR;
if (IS_DEADDIR(dir))
return -ENOENT;
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index db21f17df996..ec57687c9a4d 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3029,7 +3029,7 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
ppath = btrfs_alloc_path();
if (!ppath) {
- btrfs_free_path(ppath);
+ btrfs_free_path(path);
return -ENOMEM;
}
@@ -3041,6 +3041,8 @@ static noinline_for_stack int scrub_stripe(struct scrub_ctx *sctx,
path->search_commit_root = 1;
path->skip_locking = 1;
+ ppath->search_commit_root = 1;
+ ppath->skip_locking = 1;
/*
* trigger the readahead for extent tree csum tree and wait for
* completion. During readahead, the scrub is officially paused
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 100a0442c413..05fef198ff94 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1000,10 +1000,20 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
*/
if (fs_info->pending_changes == 0)
return 0;
+ /*
+ * A non-blocking test if the fs is frozen. We must not
+ * start a new transaction here otherwise a deadlock
+ * happens. The pending operations are delayed to the
+ * next commit after thawing.
+ */
+ if (__sb_start_write(sb, SB_FREEZE_WRITE, false))
+ __sb_end_write(sb, SB_FREEZE_WRITE);
+ else
+ return 0;
trans = btrfs_start_transaction(root, 0);
- } else {
- return PTR_ERR(trans);
}
+ if (IS_ERR(trans))
+ return PTR_ERR(trans);
}
return btrfs_commit_transaction(trans, root);
}
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 932709af5163..8be4278e25e8 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -2141,7 +2141,7 @@ void btrfs_apply_pending_changes(struct btrfs_fs_info *fs_info)
unsigned long prev;
unsigned long bit;
- prev = cmpxchg(&fs_info->pending_changes, 0, 0);
+ prev = xchg(&fs_info->pending_changes, 0);
if (!prev)
return;
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 9a1c1711f360..c5b8ba37f88e 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2635,6 +2635,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
}
if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) {
+ blk_finish_plug(&plug);
mutex_unlock(&log_root_tree->log_mutex);
ret = root_log_ctx.log_ret;
goto out;
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