linux-toradex.git/fs/btrfs/dev-replace.c, branch v4.4.93

Merge branch 'fix/waitqueue-barriers' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4

2015-10-12T23:24:40+00:00

Merge branch 'anand/sysfs-updates-v4.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.4

2015-10-12T23:24:15+00:00

Signed-off-by: Chris Mason

btrfs: remove waitqueue_active check from btrfs_rm_dev_replace_unblocked

2015-10-10T16:16:38+00:00

Normally the waitqueue_active would need a barrier, but this is not
necessary here because it's not a performance sensitive context and we
can call wake_up directly.

Suggested-by: Chris Mason 
Signed-off-by: David Sterba

btrfs: switch message printers to _in_rcu variants

2015-10-08T09:07:55+00:00

Signed-off-by: David Sterba

Btrfs: move kobj stuff out of dev_replace lock range

2015-10-01T16:07:59+00:00

To avoid deadlock described in commit 084b6e7c7607 ("btrfs: Fix a
lockdep warning when running xfstest."), we should move kobj stuff out
of dev_replace lock range.

  "It is because the btrfs_kobj_{add/rm}_device() will call memory
  allocation with GFP_KERNEL,
  which may flush fs page cache to free space, waiting for it self to do
  the commit, causing the deadlock.

  To solve the problem, move btrfs_kobj_{add/rm}_device() out of the
  dev_replace lock range, also involing split the
  btrfs_rm_dev_replace_srcdev() function into remove and free parts.

  Now only btrfs_rm_dev_replace_remove_srcdev() is called in dev_replace
  lock range, and kobj_{add/rm} and btrfs_rm_dev_replace_free_srcdev() are
  called out of the lock range."

Signed-off-by: Liu Bo 
Signed-off-by: Anand Jain 
[added lockup description]
Signed-off-by: David Sterba

Btrfs: kernel operation should come after user input has been verified

2015-10-01T15:45:10+00:00

By general rule of thumb there shouldn't be any way that user land
could trigger a kernel operation just by sending wrong arguments.

Here do commit cleanups after user input has been verified.

Signed-off-by: Anand Jain 
Signed-off-by: David Sterba

Btrfs: rename btrfs_kobj_rm_device to btrfs_sysfs_rm_device_link

2015-09-29T14:29:59+00:00

Signed-off-by: Anand Jain 
Signed-off-by: David Sterba

Btrfs: rename btrfs_kobj_add_device to btrfs_sysfs_add_device_link

2015-09-29T14:29:59+00:00

Signed-off-by: Anand Jain 
Signed-off-by: David Sterba

Btrfs: cleanup: remove unnecessary check before btrfs_free_path is called

2015-08-31T18:46:41+00:00

We need not check path before btrfs_free_path() is called because
path is checked in btrfs_free_path().

Signed-off-by: Tsutomu Itoh 
Reviewed-by: Qu Wenruo 
Signed-off-by: Chris Mason

btrfs: its btrfs_err() instead of btrfs_error()

2015-07-23T01:20:53+00:00

sorry I indented to use btrfs_err() and I have no idea
how btrfs_error() got there.
infact I was thinking about these kind of oversights
since these two func are too closely named.

Signed-off-by: Anand Jain 
Reviewed-by: Liu Bo 
Reviewed-by: David Sterba 
Signed-off-by: Chris Mason