ext4: Switch to non delalloc mode when we are low on free blocks count.

Browse source

The delayed allocation code allocates blocks during writepages(), which
can not handle block allocation failures.  To deal with this, we switch
away from delayed allocation mode when we are running low on free
blocks.  This also allows us to avoid needing to reserve a large number
of meta-data blocks in case all of the requested blocks are
discontiguous.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

...

This commit is contained in:

Aneesh Kumar K.V 2008-10-08 23:13:30 -04:00 • committed by Theodore Ts'o

parent 6bc6e63fcd

commit 79f0be8d2e

1 changed files with 50 additions and 2 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

52

fs/ext4/inode.c

View file