ext4: clean up GET_BLOCKS_PRE_IO error handling

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If the call to ext4_split_convert_extents() fails in the
EXT4_GET_BLOCKS_PRE_IO case within ext4_ext_handle_unwritten_extents(),
error out through the exit point at function end rather than jumping
through an intermediate point.  Fix the error handling in the event
ext4_split_convert_extents() returns 0, which it shouldn't do when
splitting an existing extent.  The current code returns the passed in
value of allocated (which is likely non-zero) while failing to set
m_flags, m_pblk, and m_len.

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
Link: https://lore.kernel.org/r/20200430185320.23001-4-enwlinux@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

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Eric Whitney 2020-04-30 14:53:19 -04:00 • committed by Theodore Ts'o

parent bee6cf00c7

commit 779e26517b

1 changed files with 20 additions and 6 deletions

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fs/ext4/extents.c

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