Dag-Erling Smørgrav 8d3dfc2691 Add an -E option to mirror newfs's. The idea is that if you have a system ... that was built before ffs grew support for TRIM, your filesystem will have plenty of free blocks that the flash chip doesn't know are free, so it can't take advantage of them for wear leveling. Once you've upgraded your kernel, you enable TRIM on the filesystem (tunefs -t enable), then run fsck_ffs -E on it before mounting it. I tested this patch by half-filling an mdconfig'ed filesystem image, running fsck_ffs -E on it, then verifying that the contents were not damaged by comparing them to a pristine copy using rsync's checksum functionality. There is no reliable way to test it on real hardware. Many thanks to mckusick@, who provided the tricky parts of this patch and reviewed the final version. Reviewed by: mckusick@ MFC after: 3 weeks		2011-04-29 23:00:23 +00:00
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dir.c	Eliminate linked list used to track inodes with an initial link	2004-10-08 20:44:47 +00:00
ea.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
fsck_ffs.8	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
fsck.h	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
fsutil.c	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
gjournal.c	- Merge soft-updates journaling from projects/suj/head into head. This	2010-04-24 07:05:35 +00:00
inode.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
main.c	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
Makefile	- Merge soft-updates journaling from projects/suj/head into head. This	2010-04-24 07:05:35 +00:00
pass1.c	Add some error messages suggested in PR bin/138043. The code to	2010-01-07 01:10:49 +00:00
pass1b.c	The got_siginfo = 0 should have been got_sigalarm=0 to match the other	2004-10-10 06:37:56 +00:00
pass2.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
pass3.c	Eliminate linked list used to track inodes with an initial link	2004-10-08 20:44:47 +00:00
pass4.c	Add support to background fsck to delete zero-length directories.	2010-05-20 06:05:40 +00:00
pass5.c	Add an -E option to mirror newfs's. The idea is that if you have a system	2011-04-29 23:00:23 +00:00
setup.c	In checker, read journal by sectors.	2011-02-12 13:17:14 +00:00
suj.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00
utilities.c	Mechanical whitespace cleanup.	2011-04-27 02:55:03 +00:00