Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Wrapper around bch2_dev_have_ref() for open_buckets; we do guarantee
that the device an open_bucket points to exists.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This is needed for the next patch - the write submit path has to be able
to allocate a replica bio even when we weren't able to get a ref on the
device.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

New helper for getting refs to devices as we iterate.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

More elimination of bch2_dev_bkey_exists() usage.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Most uses of bch2_dev_bkey_exists() are going away, where we assume that
because a key references a device the device most exist - instead, we'll
be explicitly checking if the device exists and getting a reference to
it.

This adds the new helpers.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Eliminating bch2_dev_bkey_exists() uses and replacing them with proper
checks; this one was unnecessary since the caller already has it.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

More elimating bch2_dev_bkey_exists()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This will be used in the next patch for adding some new debug mode
asserts.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

If we block on the allocator for more than 10 seconds, print out some
useful debugging info.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Add a new variant of closure_sync_timeout() that takes a timeout.

Note that when this returns -ETIME the closure will still be waiting on
something, i.e. it's not safe to return if you've got a stack allocated
closure.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We can't strictly guarantee that no pointers refer to nonexistent
devices - we attempt to, but we need to be safe when the filesystem is
corrupt.

Therefore, change device_add to try to pick a slot that's never been
used, or the slot that's been unused the longest.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Now explicitly allocate and free the buckets_nouse bitmap - this is
going to be used for online fsck.

To go RW when we haven't check allocations, we'll do a much slimmed down
version that just initializes the buckets_nouse bitmaps.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

by using bucket_m_to_alloc() more, we can get some nice code cleanup.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

this was from metadata only gc - we don't need it anymore
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

It should be FS_IOC32_GETFLAGS instead of FS_IOC_GETFLAGS in
compat ioctl.
Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

In bch2_link_trans(), if bch2_inode_nlink_inc() fails, it needs to
call bch2_trans_iter_exit() in the error path.
Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

The vfs[1] documentation describes free_inode as follows:
```
free_inode
    this method is called from RCU callback. If you use call_rcu()
    in ->destroy_inode to free ‘struct inode’ memory, then it’s
    better to release memory in this method.
```

free_inode will be called by the RCU callback, so it might be better
to move the inode free operation to destroy_inode.

Similar to commit ae6b47b5 ("fs/ntfs3: Change destroy_inode to
free_inode").

Link:
[1]: https://www.kernel.org/doc/html/latest/filesystems/vfs.htmlSigned-off-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>