tree 22c6c34e55ce1dabf8ca7d5d81205828f387ea51
parent 0e0adbcfdc908684317c99a9bf5e13383f03b7ec
author Josef Bacik <josef@toxicpanda.com> 1508436961 -0400
committer David Sterba <dsterba@suse.com> 1509565535 +0100

btrfs: don't call btrfs_start_delalloc_roots in flushoncommit

We're holding the sb_start_intwrite lock at this point, and doing async
filemap_flush of the inodes will result in a deadlock if we freeze the
fs during this operation.  This is because we could do a
btrfs_join_transaction() in the thread we are waiting on which would
block at sb_start_intwrite, and thus deadlock.  Using
writeback_inodes_sb() side steps the problem by not introducing all of
these extra locking dependencies.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>