For IPU, there is no need to read dnode, these three patches are to fix this
issue.
patch 1): Reconstruct code in do_write_data_page, code logic stays unchanged,
patch 2): Under high-probability IPU scenario, we check extent_tree first
patch 3): Unlock dnode before IPU
v1->v2:
1) fix
if(f2fs_encrypt_page())
XXX
to
err = f2fs_encrypt_page()
if (err)
XXX
otherwise do_write_data_page would return a wrong return value.
2) extract need_in_place_block(fio, page) for IPU checking.
Hou Pengyang (3):
f2fs: reconstruct code to write a data page
f2fs: lookup extent cache first under IPU scenario
f2fs: unlock dnode before IPU
fs/f2fs/data.c | 109 ++++++++++++++++++++++++++++++++++++++++++++-------------
1 file changed, 84 insertions(+), 25 deletions(-)
--
2.10.1
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