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| author | Zhao Lei <zhaolei@cn.fujitsu.com> | 2016-01-07 10:38:48 (GMT) |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-02-18 09:27:23 (GMT) |
| commit | 2fefd5583f8b86171c898f90cadac7c09ccf9d73 (patch) | |
| tree | 6f5c406bc2dc0ba63c36f3fb19e2462c9f42739c /fs/btrfs/disk-io.c | |
| parent | 895a11b868347ca8e287f152f7816862ad4b179d (diff) | |
| download | linux-2fefd5583f8b86171c898f90cadac7c09ccf9d73.tar.xz | |
btrfs: reada: limit max works count
Reada creates 2 works for each level of tree recursively.
In case of a tree having many levels, the number of created works
is 2^level_of_tree.
Actually we don't need so many works in parallel, this patch limits
max works to BTRFS_MAX_MIRRORS * 2.
The per-fs works_counter will be also used for btrfs_reada_wait() to
check is there are background workers.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 498156e..5e3ec1f 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2603,6 +2603,7 @@ int open_ctree(struct super_block *sb, atomic_set(&fs_info->nr_async_bios, 0); atomic_set(&fs_info->defrag_running, 0); atomic_set(&fs_info->qgroup_op_seq, 0); + atomic_set(&fs_info->reada_works_cnt, 0); atomic64_set(&fs_info->tree_mod_seq, 0); fs_info->sb = sb; fs_info->max_inline = BTRFS_DEFAULT_MAX_INLINE; |