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for-6.3-rc6-tag 

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Merge tag 'for-6.3-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - fix fast checksum detection, this affects filesystems with non-crc32c
   checksum, calculation would not be offloaded to worker threads

 - restore thread_pool mount option behaviour for endio workers, the new
   value for maximum active threads would not be set to the actual work
   queues

* tag 'for-6.3-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix fast csum implementation detection
  btrfs: restore the thread_pool= behavior in remount for the end I/O workqueues
This commit is contained in:
Linus Torvalds 2023-04-11 11:43:16 -07:00
parent 793cfd5983 68d99ab0e9
commit 2c40519251
2 changed files with 16 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
fs/btrfs/disk-io.c
View File

@ -2250,6 +2250,20 @@ static int btrfs_init_csum_hash(struct btrfs_fs_info *fs_info, u16 csum_type)
fs_info->csum_shash = csum_shash;
/*
* Check if the checksum implementation is a fast accelerated one.
* As-is this is a bit of a hack and should be replaced once the csum
* implementations provide that information themselves.
*/
switch (csum_type) {
case BTRFS_CSUM_TYPE_CRC32:
if (!strstr(crypto_shash_driver_name(csum_shash), "generic"))
set_bit(BTRFS_FS_CSUM_IMPL_FAST, &fs_info->flags);
break;
default:
break;
}
btrfs_info(fs_info, "using %s (%s) checksum algorithm",
btrfs_super_csum_name(csum_type),
crypto_shash_driver_name(csum_shash));

4
fs/btrfs/super.c
View File

@ -1516,8 +1516,6 @@ static struct dentry *btrfs_mount_root(struct file_system_type *fs_type,
shrinker_debugfs_rename(&s->s_shrink, "sb-%s:%s", fs_type->name,
s->s_id);
btrfs_sb(s)->bdev_holder = fs_type;
if (!strstr(crc32c_impl(), "generic"))
set_bit(BTRFS_FS_CSUM_IMPL_FAST, &fs_info->flags);
error = btrfs_fill_super(s, fs_devices, data);
}
if (!error)
@ -1631,6 +1629,8 @@ static void btrfs_resize_thread_pool(struct btrfs_fs_info *fs_info,
btrfs_workqueue_set_max(fs_info->hipri_workers, new_pool_size);
btrfs_workqueue_set_max(fs_info->delalloc_workers, new_pool_size);
btrfs_workqueue_set_max(fs_info->caching_workers, new_pool_size);
workqueue_set_max_active(fs_info->endio_workers, new_pool_size);
workqueue_set_max_active(fs_info->endio_meta_workers, new_pool_size);
btrfs_workqueue_set_max(fs_info->endio_write_workers, new_pool_size);
btrfs_workqueue_set_max(fs_info->endio_freespace_worker, new_pool_size);
btrfs_workqueue_set_max(fs_info->delayed_workers, new_pool_size);