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Btrfs: use root when checking need_async_flush 

Instead of doing fs_info->fs_root in need_async_flush, which may not be set
during recovery when mounting, just pass the root itself in, which makes more
sense as thats what btrfs_calc_reclaim_metadata_size takes.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Reported-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
steinar/wifi_calib_4_9_kernel
Josef Bacik 2016-04-25 09:58:18 -04:00 committed by David Sterba
parent d38b349c39
commit 87241c2e68
1 changed files with 6 additions and 5 deletions
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11
fs/btrfs/extent-tree.c
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@ -4936,7 +4936,7 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_root *root,
}
static inline int need_do_async_reclaim(struct btrfs_space_info *space_info,
struct btrfs_fs_info *fs_info, u64 used)
struct btrfs_root *root, u64 used)
{
u64 thresh = div_factor_fine(space_info->total_bytes, 98);
@ -4944,11 +4944,12 @@ static inline int need_do_async_reclaim(struct btrfs_space_info *space_info,
if ((space_info->bytes_used + space_info->bytes_reserved) >= thresh)
return 0;
if (!btrfs_calc_reclaim_metadata_size(fs_info->fs_root, space_info))
if (!btrfs_calc_reclaim_metadata_size(root, space_info))
return 0;
return (used >= thresh && !btrfs_fs_closing(fs_info) &&
!test_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state));
return (used >= thresh && !btrfs_fs_closing(root->fs_info) &&
!test_bit(BTRFS_FS_STATE_REMOUNTING,
&root->fs_info->fs_state));
}
static void wake_all_tickets(struct list_head *head)
@ -5193,7 +5194,7 @@ static int __reserve_metadata_bytes(struct btrfs_root *root,
* the async reclaim as we will panic.
*/
if (!root->fs_info->log_root_recovering &&
need_do_async_reclaim(space_info, root->fs_info, used) &&
need_do_async_reclaim(space_info, root, used) &&
!work_busy(&root->fs_info->async_reclaim_work)) {
trace_btrfs_trigger_flush(root->fs_info,
space_info->flags,