ext4: collapse a single extent tree block into the inode if possible

Browse source

If an inode has more than 4 extents, but then later some of the
extents are merged together, we can optimize the file system by moving
the extents up into the inode, and discarding the extent tree block.
This is important, because if there are a large number of inodes with
an external extent tree blocks where the contents could fit in the
inode, this can significantly increase the fsck time of the file
system.

Google-Bug-Id: 6801242

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

...

This commit is contained in:

Theodore Ts'o 2012-08-17 09:44:17 -04:00

parent 89a4e48f84

commit ecb94f5fdf

1 changed files with 58 additions and 14 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

72

fs/ext4/extents.c

View file