https://github.com/torvalds/linux
Revision a9f2a2931d0e197ab28c6007966053fdababd53f authored by Jan Kara on 08 September 2022, 09:21:27 UTC, committed by Theodore Ts'o on 22 September 2022, 02:12:00 UTC
Curently we don't use any preallocation when a file is already closed
when allocating blocks (from writeback code when converting delayed
allocation). However for small files, using locality group preallocation
is actually desirable as that is not specific to a particular file.
Rather it is a method to pack small files together to reduce
fragmentation and for that the fact the file is closed is actually even
stronger hint the file would benefit from packing. So change the logic
to allow locality group preallocation in this case.
Fixes: 196e402adf2e ("ext4: improve cr 0 / cr 1 group scanning")
CC: stable@kernel.org
Reported-and-tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Ojaswin Mujoo <ojaswin@linux.ibm.com>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/all/0d81a7c2-46b7-6010-62a4-3e6cfc1628d6@i2se.com/
Link: https://lore.kernel.org/r/20220908092136.11770-4-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 parent 613c5a8
Tip revision: a9f2a2931d0e197ab28c6007966053fdababd53f authored by Jan Kara on 08 September 2022, 09:21:27 UTC
ext4: use locality group preallocation for small closed files
ext4: use locality group preallocation for small closed files
Tip revision: a9f2a29
Computing file changes ...
