Description: xfs: set format back to extents if xfs_bmap_extents_to_btree fails
References:
 https://bugzilla.kernel.org/show_bug.cgi?id=199423
 https://www.spinics.net/lists/linux-xfs/msg17254.html
Notes:
Bugs:
upstream: released (4.17-rc4) [2c4306f719b083d17df2963bc761777576b8ad1b]
4.19-upstream-stable: N/A "Fixed before branch point"
4.9-upstream-stable: released (4.9.232) [8e5f820e14e93ebfc7fcf2a099817eb9c7c3be04]
3.16-upstream-stable: released (3.16.58) [00fe22e3f801fd5225aeecc6bf79630ec201f8e4]
3.2-upstream-stable: ignored "Too much work to backport"
sid: released (4.16.5-1) [bugfix/all/xfs-set-format-back-to-extents-if-xfs_bmap_extents_t.patch]
4.19-buster-security: N/A "Fixed before branching point"
4.9-stretch-security: released (4.9.88-1) [bugfix/all/xfs-set-format-back-to-extents-if-xfs_bmap_extents_t.patch]
3.16-jessie-security: released (3.16.59-1)
3.2-wheezy-security: ignored "Too much work to backport"