ext4: cleanup transaction restarts during inode deletion

Browse source

During inode deletion, the number of journal credits that will be
needed is hard to determine.  For that reason we have journal
extend/restart calls in several places.  Whenever a transaction is
restarted, filesystem must be in a consistent state because there is
no atomicity guarantee beyond a restart call.

Add ext4_xattr_ensure_credits() helper function which takes care of
journal extend/restart logic.  It also handles getting jbd2 write
access and dirty metadata calls.  This function is called at every
iteration of handling an ea_inode reference.

Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

...

This commit is contained in:

Tahsin Erdogan 2017-06-22 11:42:09 -04:00 • committed by Theodore Ts'o

parent 02749a4c20

commit 30a7eb970c

3 changed files with 184 additions and 143 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

66

fs/ext4/inode.c

View file

258

fs/ext4/xattr.c

View file

3

fs/ext4/xattr.h

View file