Commit Graph

2067 Commits

Author SHA1 Message Date
Nate Williams
ed8d80c2de Fix 'noatime' bug that was unrelated to use of noatime.
The problem is caused when a directory block is compacted.  When this
occurs, softdep_change_directoryentry_offset() is called to relocate each
directory entry and adjust its matching diradd structure, if any, to match
the new location of the entry.  The bug is that while
softdep_change_directoryentry_offset() correctly adjusts the offsets of
the diradd structures on the pd_diraddhd[] lists (which are not yet ready
to be committed to disk), it fails to adjust the offsets of the diradd
structures on the pd_pendinghd list (which are ready to be committed to
disk).  This causes the dependency structures to be inconsistent with
the buf contents.  Now, if the compaction has moved a directory entry to
the same offset as one of the diradd structures on the pd_pendinghd list
*and* a syscall is done that tries to remove this directory entry before
this directory block has been written to disk (which would empty
pd_pendinghd), a sanity check in newdirrem() will call panic() when it
notices that the inode number in the entry that it is to be removed doesn't
match the inode number in the diradd structure with that offset of that
entry.

Reviewed by:	Kirk McKusick <mckusick@McKusick.COM>
Submitted by:	Don Lewis <Don.Lewis@tsc.tdk.com>
1998-10-03 19:17:11 +00:00
Luoqi Chen
e266594c25 Eliminate a race in VOP_FSYNC() when softupdates is enabled.
Submitted by:	Kirk McKusick	<mckusick@McKusick.COM>
Two minor changes are also included,
1. Remove gratuitious checks for error return from vn_lock with LK_RETRY set,
   vn_lock should always succeed in these cases.
2. Back out change rev. 1.36->1.37, which unnecessarily makes async mount
   a little more unstable. It also keeps us in sync with other BSDs.
Suggested by:	Bruce Evans	<bde@zeta.org.au>
1998-09-24 15:02:46 +00:00
Julian Elischer
55d80b2df1 Handle the case of moving a directory onto the top of a sibling's
child of the same name.

Submitted by:	Kirk Mckusick with fixes from luoqi Chen
Obtained from:   Whistle test tree.
1998-08-12 20:46:47 +00:00
Julian Elischer
28ed032673 Note which version of Kirk's sources this corresponds to. 1998-06-12 21:21:26 +00:00
Julian Elischer
aa75cb86b4 Fix the case when renaming to a file that you've just created and deleted,
that had an inode that has not yet been written to disk, when the inode of the
new file is also not yet written to disk, and your old directory entry is not
yet on disk but you need to remove it and the new name exists in memory
but has been deleted but the transaction to write the deleted name to disk
exists and has not yet been cancelled by the request to delete the non
existant name.  I don't know how kirk could have missed such a glaring
problem for so long. :-) Especially since the inconsitency survived on
the disk for a whole 4 second on average before being fixed by other code.
This was not a crashing bug but just led to filesystem inconsitencies
if you crashed.

Submitted by: Kirk McKusick (mckusick@mckusick.com)
1998-06-12 20:48:30 +00:00
Julian Elischer
6d0ba44288 Add B_NOCACHE to several cases where BSD4.4 only required a B_INVAL.
Change worked out by john and kirk in consort.
1998-06-11 17:44:32 +00:00
Julian Elischer
8c221701c3 Fix for "live inode" panic.
Submitted by: Kirk McKusick <mckusick@McKusick.COM>
Reviewed by: yeah right...
1998-06-10 20:45:46 +00:00
Julian Elischer
4af0bb0f9e Remove buggy debugging code. 1998-06-10 20:03:16 +00:00
Julian Elischer
3942b533f8 Add a reference to the Ganger/Patt paper 1998-06-02 01:27:27 +00:00
Julian Elischer
b8cf4de4c8 A fix to a debug test from Kirk. 1998-05-27 03:32:23 +00:00
Julian Elischer
25db4e8a66 Bring up-to-date with Whistle's current version
Includes some debugging code.
1998-05-19 23:07:25 +00:00
Julian Elischer
46e752be05 Merge with Kirk's version as of Feb 20
His version 9.23 == our version 1.5 of ffs_softdep.c
His version 9.5 ==  our version 1.4 of softdep.c
1998-05-19 22:54:53 +00:00
Julian Elischer
62e12c760c Merge in Kirk's changes to stop softupdates from hogging all of memory. 1998-05-19 21:45:53 +00:00
Julian Elischer
b6dad36385 Change to stop a silly panic. This should be understood better.
Change a buffer swizzle trick to a bcopy. It would be nice if the efficient
trick could be used in the future.
1998-05-19 20:50:41 +00:00
Julian Elischer
987614a910 First published FreeBSD version of soft updates Feb 5. 1998-05-19 20:18:42 +00:00
Julian Elischer
00316b421a Import the next version received from kirk after some
FreeBSD feedback.
1998-05-19 20:03:29 +00:00
Julian Elischer
6b689f7645 Import the earliest version of the soft update code that I have. 1998-05-19 19:47:22 +00:00