linux.git/fs/btrfs/root-tree.c, branch v3.11

Btrfs: cleanup orphaned root orphan item

2013-07-02T15:50:52+00:00

I hit a weird problem were my root item had been deleted but the orphan item had
not.  This isn't necessarily a problem, but it keeps the file system from being
mounted.  To fix this we just need to axe the orphan item if we can't find the
fs root when we're putting them altogether.  With this patch I was able to
successfully mount my file system.  Thanks,

Signed-off-by: Josef Bacik

Btrfs: remove unused code in btrfs_del_root

2013-06-14T15:30:02+00:00

'leaf' and 'ri' is not used somehow.

Signed-off-by: Liu Bo 
Signed-off-by: Josef Bacik

Btrfs: cleanup the similar code of the fs root read

2013-06-14T15:29:37+00:00

There are several functions whose code is similar, such as
  btrfs_find_last_root()
  btrfs_read_fs_root_no_radix()

Besides that, some functions are invoked twice, it is unnecessary,
for example, we are sure that all roots which is found in
  btrfs_find_orphan_roots()
have their orphan items, so it is unnecessary to check the orphan
item again.

So cleanup it.

Signed-off-by: Miao Xie 
Signed-off-by: Josef Bacik

Btrfs: delete unused parameter to btrfs_read_root_item()

2013-05-06T19:55:14+00:00

Signed-off-by: Stefan Behrens 
Signed-off-by: Josef Bacik

Btrfs: rename root_times_lock to root_item_lock

2012-12-17T01:46:21+00:00

Originally root_times_lock was introduced as part of send/receive
code however newly developed patch to label the subvol reused
the same lock, so renaming it for a meaningful name.

Signed-off-by: Anand Jain 
Signed-off-by: Chris Mason

btrfs: move transaction aborts to the point of failure

2012-10-09T00:09:02+00:00

Call btrfs_abort_transaction as early as possible when an error
condition is detected, that way the line number reported is useful
and we're not clueless anymore which error path led to the abort.

Signed-off-by: David Sterba

Btrfs: fix some endian bugs handling the root times

2012-08-28T20:53:26+00:00

"trans->transid" is cpu endian but we want to store the data as little
endian.  "item->ctime.nsec" is only 32 bits, not 64.

Signed-off-by: Dan Carpenter

Btrfs: introduce subvol uuids and times

2012-07-25T21:28:38+00:00

This patch introduces uuids for subvolumes. Each
subvolume has it's own uuid. In case it was snapshotted,
it also contains parent_uuid. In case it was received,
it also contains received_uuid.

It also introduces subvolume ctime/otime/stime/rtime. The
first two are comparable to the times found in inodes. otime
is the origin/creation time and ctime is the change time.
stime/rtime are only valid on received subvolumes.
stime is the time of the subvolume when it was
sent. rtime is the time of the subvolume when it was
received.

Additionally to the times, we have a transid for each
time. They are updated at the same place as the times.

btrfs receive uses stransid and rtransid to find out
if a received subvolume changed in the meantime.

If an older kernel mounts a filesystem with the
extented fields, all fields become invalid. The next
mount with a new kernel will detect this and reset the
fields.

Signed-off-by: Alexander Block 
Reviewed-by: David Sterba 
Reviewed-by: Arne Jansen 
Reviewed-by: Jan Schmidt 
Reviewed-by: Alex Lyakas

btrfs: replace many BUG_ONs with proper error handling

2012-03-22T10:52:54+00:00

 btrfs currently handles most errors with BUG_ON. This patch is a work-in-
 progress but aims to handle most errors other than internal logic
 errors and ENOMEM more gracefully.

 This iteration prevents most crashes but can run into lockups with
 the page lock on occasion when the timing "works out."

Signed-off-by: Jeff Mahoney

btrfs: btrfs_update_root error push-up

2012-03-22T00:45:33+00:00

btrfs_update_root BUG's when it can't alloc a path, yet it can recover
from a search error. This patch returns -ENOMEM instead.

Signed-off-by: Jeff Mahoney