kernelOfTruth a966c5640e Reintroduce zfs_remove() synchronous deletes ...

Reintroduce a slightly adapted version of the Illumos logic for
synchronous unlinks.  The basic idea here is that only files
smaller than zfs_delete_blocks (20480) blocks should be deleted
synchronously.  Unlinking larger files should be handled
asynchronously to minimize impact to the caller.

To accomplish this iput() which is responsible for calling
zfs_znode_delete() on Linux is only called in the delete_now
path.  Otherwise zfs_async_iput() is used which allows the
last reference to be dropped by a taskq thread effectively
making the removal asynchronous.

Porting notes:
- Add zfs_delete_blocks module option for performance analysis.
  The default value is DMU_MAX_DELETEBLKCNT which is the same
  as upstream.  Reducing this value means that smaller files
  will be unlinked asynchronously like large files.
- All occurrences of zfsvfs changes to zsb.

Ported-by: KernelOfTruth kerneloftruth@gmail.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

2016-01-26 15:26:02 -08:00

..

man1

Increase default user space stack size

2016-01-13 13:55:12 -08:00

man5

Reintroduce zfs_remove() synchronous deletes

2016-01-26 15:26:02 -08:00

man8

Illumos 4891 - want zdb option to dump all metadata

2016-01-11 11:36:54 -08:00

Makefile.am

Create mount.zfs, zinject, and zpios man pages.

2013-03-13 13:41:22 -07:00