This uses the new _ip() interface to six locks and hooks it up to
btree_path->ip_allocated, when available.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This adds _ip variations of the various lock functions that allow an IP
to be passed in, which is used by lockstat.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This replaces various BUG_ON() assertions with panics that tell us where
the restart was done and the restart type.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This ensures that failure to read a btree node error is treated as a
topology error, and returns the correct error so that the topology
repair pass will be run.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This should have been resetting trans->fs_usage_deltas as well.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

On hash collision when we have to check for duplicates or incorrect
hash value, we weren't specifying a snapshot ID to iterate with.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

Easy workaround for a lockdep splat - and since bch2_prt_backtrace() is
only used in debug code this is fine.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This improves io_opts() and makes it a non-inline function - it's big
enough that it probably shouldn't be.

Also, bch_io_opts no longer needs fields for whether options are
defined, so we can slim it down a bit.

We'd like to stop passing around the full bch_io_opts, but that'll be
tricky because of bch2_rebalance_add_key().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We weren't guarding against the alloc key having an invalid data type.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Provide inline versions of some allocation functions
 - bch2_alloc_sectors_done_inlined()
 - bch2_alloc_sectors_append_ptrs_inlined()

and use them in the core IO path.

Also, inline bch2_extent_update_i_size_sectors() and
bch2_bkey_append_ptr().

In the core write path, function call overhead matters - every function
call is a jump to a new location and a potential cache miss.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This separates out the slowpath into a separate function, and inlines
bch2_alloc_v4_mut into bch2_trans_start_alloc_update(), the main place
it's called.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Now we include the return code.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We were incorrectly retrying after a transaction restart.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

When we need to add more replicas to an extent, it might be the case
that we already have a replica on every device, but some of them are
cached.

This patch fixes a bug where we'd spin on that extent because the write
path fails to find a device we can allocate from: we allow allocating
from devices that already have cached replicas on them, and change
bch2_data_update_index_update() to drop the cached replica if needed.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

When errors=panic, we need to dump transaction updates before calling
bch2_inconsistent_error().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We now have bch2_trans_inconsistent() which generically does the same
thing - dumps pending btree transaction updates.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This fixes a few error paths in debug code that lead to locks failing to
be dropped.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

More error code cleanup, for better error messages and debugability.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

More error code improvements - this gets us more useful error messages.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

Old inode formats don't have all the fields of the current inode format:
when unpacking inodes in the current format we can thus skip zeroing out
the destination buffer, but that doesn't work on for the old formats.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

In debug mode, we now track where btree iterators and paths are
initialized/allocated - helpful in tracking down btree path overflows.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This is something we need to do more widely: instead of bothering with
GFP_NOIO/GFP_NOFS, if we need to allocate memory while holding locks:

 - first attempt the allocation with GFP_NOWAIT
 - if that fails, drop btree locks with bch2_trans_unlock(), then
   retry with GFP_KERNEL.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We don't need a write lock to check if a key is dirty.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

We need to take a ref on a path while we're traversing it: this fixes a
bug with paths getting reused while being traversed, in the key cache
fill code.
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>

The btree node read path has the ability to kick off an asynchronous
btree node rewrite if we saw and corrected an error. Previously this was
only used for errors that caused one of the replicas to be unusable -
this patch plumbs it through to all error paths, so that normal fsck
errors can be corrected.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This makes the code more readable, and reduces text size by 8 kb.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

Don't print out opts= if no options have been specified.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

This patch

 - Adds a mechanism for queuing up journal entries prior to the journal
   being started, which will be used for early journal log messages

 - Adds bch2_fs_log_msg() and improves bch2_trans_log_msg(), which now
   take format strings. bch2_fs_log_msg() can be used before or after
   the journal has been started, and will use the appropriate mechanism.

 - Deletes the now obsolete bch2_journal_log_msg()

 - And adds more log messages to the recovery path - messages for
   journal/filesystem started, journal entries being blacklisted, and
   journal replay starting/finishing.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

With CONFIG_FORTIFY_SOURCE, the compiler attempts to warn about mempcys
that extend past struct field boundaries. This results in some spurious
warnings where we use embedded variable length structs, this patch
switches to unsafe_mecpy() to fix the warnings.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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

It's now legal for the pin fifo to be empty, which means this code needs
to be updated in order to not hit an assert.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>