d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

When the softdep conversion took place, the periodic vfs_msync() from

Browse Source 
update got lost.  This is responsible for ensuring that dirty mmap() pages
get periodically written to disk.  Without it, long time mmap's might not
have their dirty pages written out at all of the system crashes or isn't
cleanly shut down.  This could be nasty if you've got a long-running
writing via mmap(), dirty pages used to get written to disk within 30
seconds or so.
This commit is contained in:
peter 1998-04-16 03:31:26 +00:00
parent 6528be86fc
commit 38037278fa
2 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/kern/vfs_export.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_subr.c 8.31 (Berkeley) 5/26/95
* $Id: vfs_subr.c,v 1.148 1998/03/30 09:51:08 phk Exp $
* $Id: vfs_subr.c,v 1.149 1998/04/15 18:37:49 tegge Exp $
*/
/*
@ -2744,6 +2744,7 @@ sync_fsync(ap)
}
asyncflag = mp->mnt_flag & MNT_ASYNC;
mp->mnt_flag &= ~MNT_ASYNC;
vfs_msync(mp, MNT_NOWAIT);
VFS_SYNC(mp, MNT_LAZY, ap->a_cred, p);
if (asyncflag)
mp->mnt_flag |= MNT_ASYNC;

3
sys/kern/vfs_subr.c
View File

@ -36,7 +36,7 @@
* SUCH DAMAGE.
*
* @(#)vfs_subr.c 8.31 (Berkeley) 5/26/95
* $Id: vfs_subr.c,v 1.148 1998/03/30 09:51:08 phk Exp $
* $Id: vfs_subr.c,v 1.149 1998/04/15 18:37:49 tegge Exp $
*/
/*
@ -2744,6 +2744,7 @@ sync_fsync(ap)
}
asyncflag = mp->mnt_flag & MNT_ASYNC;
mp->mnt_flag &= ~MNT_ASYNC;
vfs_msync(mp, MNT_NOWAIT);
VFS_SYNC(mp, MNT_LAZY, ap->a_cred, p);
if (asyncflag)
mp->mnt_flag |= MNT_ASYNC;