hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

btrfs: take into account global rsv in need_preemptive_reclaim 

Global rsv can't be used for normal allocations, and for very full file
systems we can decide to try and async flush constantly even though
there's really not a lot of space to reclaim.  Deal with this by
including the global block rsv size in the "total used" calculation.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2021-04-28 13:38:44 -04:00 committed by David Sterba
parent 0aae4ca9e9
commit 610a6ef44e
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/btrfs/space-info.c
View File

@ -792,12 +792,14 @@ btrfs_calc_reclaim_metadata_size(struct btrfs_fs_info *fs_info,
static bool need_preemptive_reclaim(struct btrfs_fs_info *fs_info,
struct btrfs_space_info *space_info)
{
u64 global_rsv_size = fs_info->global_block_rsv.reserved;
u64 ordered, delalloc;
u64 thresh = div_factor_fine(space_info->total_bytes, 98);
u64 used;
/* If we're just plain full then async reclaim just slows us down. */
if ((space_info->bytes_used + space_info->bytes_reserved) >= thresh)
if ((space_info->bytes_used + space_info->bytes_reserved +
global_rsv_size) >= thresh)
return false;
/*