ext4: only call ext4_truncate when size <= isize

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At LSF we decided that if we truncate up from isize we shouldn't trim
fallocated blocks that were fallocated with KEEP_SIZE and are past the
new i_size.  This patch fixes ext4 to do this.

[ Completely reworked patch so that i_disksize would actually get set
  when truncating up.  Also reworked the code for handling truncate so
  that it's easier to handle. -- tytso ]

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Lukas Czerner <lczerner@redhat.com>

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Josef Bacik 2015-06-22 00:31:26 -04:00 • committed by Theodore Ts'o

parent 04e22412f4

commit 3da40c7b08

1 changed files with 18 additions and 20 deletions

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38

fs/ext4/inode.c

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