Inventor
CHANG JOON
US32 patents
⚠️ This page may combine multiple inventors who share the name “CHANG JOON”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
16 patentsUS7440966B2Oct 21, 2008
Method and apparatus for file system snapshot persistence
IBM145 citations97
US7284019B2Oct 16, 2007
Apparatus, system, and method for differential backup using snapshot on-write data
IBM21 citations92
US6850929B2Feb 1, 2005
System and method for managing file system extended attributes
IBM48 citations90
US7472138B2Dec 30, 2008
System and method for handing input/output errors during recovery of journaling files in a data processing system
IBM25 citations88
US7702662B2Apr 20, 2010
Method and system for handling reallocated blocks in a file system
IBM12 citations83
US7778961B2Aug 17, 2010
Delayed deletion of extended attributes
IBM13 citations80
US7340487B2Mar 4, 2008
Delayed deletion of extended attributes
IBM7 citations72
US6625614B1Sep 23, 2003
Implementation for efficient access of extended attribute data
IBM8 citations71
US7200686B2Apr 3, 2007
Method, apparatus, and program product for facilitating serialization of input/output requests to a logical volume allowing nonserialized input/output requests
IBM4 citations63
US7958325B2Jun 7, 2011
Handling temporary files in a file system with snapshots
IBM4 citations62
US7213244B2May 1, 2007
Apparatus and method for distribution of work on a doubly linked list among processing threads
IBM5 citations61
US6768993B2Jul 27, 2004
System and method for file system cooperation in a multi-threaded environment
IBM2 citations60
US6732248B2May 4, 2004
System and method for ghost offset utilization in sequential byte stream semantics
IBM4 citations60
US9020899B2Apr 28, 2015
File cloning across different filesets
IBM0 citations51
US7921081B2Apr 5, 2011
Managing a snapshot stored within a file system space for efficient detection of in-use blocks
IBM0 citations41
US7805471B2Sep 28, 2010
Method and apparatus to perform incremental truncates in a file system
IBM0 citations35
ADKINS JANET E
10 patentsUS8306950B2Nov 6, 2012
Managing data access requests after persistent snapshots
ADKINS JANET E7 citations83
US8458181B2Jun 4, 2013
Distributed free block map for a clustered redirect-on-write file system
ADKINS JANET E8 citations82
US8650158B2Feb 11, 2014
File cloning across different filesets
ADKINS JANET E4 citations72
US8495112B2Jul 23, 2013
Distributed file hierarchy management in a clustered redirect-on-write file system
ADKINS JANET E3 citations62
US8626713B2Jan 7, 2014
Multiple contexts in a redirect on write file system
ADKINS JANET E3 citations61
US8396832B2Mar 12, 2013
Independent fileset generations in a clustered redirect-on-write filesystem
ADKINS JANET E4 citations61
US8195611B2Jun 5, 2012
Using a sparse file as a clone of a file
ADKINS JANET E4 citations61
US8666943B2Mar 4, 2014
File cloning across different filesets
ADKINS JANET E0 citations51
US8521690B2Aug 27, 2013
Using a sparse file as a clone of a file
ADKINS JANET E0 citations51
US8190657B2May 29, 2012
Method and system for handling reallocated blocks in a file system
ADKINS JANET E0 citations51
CHANG JOON
4 patentsUS8396833B2Mar 12, 2013
Inode management in redirect-on-write file system
CHANG JOON2 citations61
US8904006B2Dec 2, 2014
In-flight block map for a clustered redirect-on-write filesystem
CHANG JOON3 citations60
US8959227B2Feb 17, 2015
In-flight block map for a clustered redirect-on-write filesystem
CHANG JOON1 citations49
US8799333B2Aug 5, 2014
Delayed deletion of extended attributes
CHANG JOON0 citations49