Author: jh Date: Mon Jun 14 17:31:46 2010 New Revision: 209168 URL: http://svn.freebsd.org/changeset/base/209168
Log: Update vfs_busy(9) and vfs_unbusy(9) manual pages to better match the current behaviour of the functions. Discussed with: attilio Modified: head/share/man/man9/vfs_busy.9 head/share/man/man9/vfs_unbusy.9 Modified: head/share/man/man9/vfs_busy.9 ============================================================================== --- head/share/man/man9/vfs_busy.9 Mon Jun 14 17:28:32 2010 (r209167) +++ head/share/man/man9/vfs_busy.9 Mon Jun 14 17:31:46 2010 (r209168) @@ -26,7 +26,7 @@ .\" .\" $FreeBSD$ .\" -.Dd November 2, 2008 +.Dd June 14, 2010 .Dt VFS_BUSY 9 .Os .Sh NAME @@ -40,9 +40,8 @@ .Sh DESCRIPTION The .Fn vfs_busy -function marks a mount point as busy. -The purpose of this -function is to synchronize access to a mount point. +function marks a mount point as busy by incrementing +the reference count of a mount point. It also delays unmounting by sleeping on .Fa mp if the @@ -50,7 +49,7 @@ if the flag is set in .Fa mp->mnt_kern_flag and the -.Dv LK_NOWAIT +.Dv MBF_NOWAIT flag is .Em not set. @@ -75,9 +74,9 @@ drop the mountlist_mtx in the critical p .Sh RETURN VALUES A 0 value is returned on success. If the mount point is being -unmounted +unmounted and MBF_NOWAIT flag is specified .Er ENOENT -will always be returned. +will be returned. .Sh ERRORS .Bl -tag -width Er .It Bq Er ENOENT Modified: head/share/man/man9/vfs_unbusy.9 ============================================================================== --- head/share/man/man9/vfs_unbusy.9 Mon Jun 14 17:28:32 2010 (r209167) +++ head/share/man/man9/vfs_unbusy.9 Mon Jun 14 17:31:46 2010 (r209168) @@ -26,7 +26,7 @@ .\" .\" $FreeBSD$ .\" -.Dd August 29, 2008 +.Dd June 14, 2010 .Dt VFS_UNBUSY 9 .Os .Sh NAME @@ -40,23 +40,17 @@ .Sh DESCRIPTION The .Fn vfs_unbusy -function un-busies a mount point by unlocking -.Fa mp->mnt_lock . -The lock is typically acquired by calling +function un-busies a mount point by decrementing +the reference count of a mount point. +The reference count is typically incremented by calling .Xr vfs_busy 9 prior to this call. .Pp Its arguments are: .Bl -tag -width ".Fa mp" .It Fa mp -The mount point to unbusy (unlock). +The mount point to unbusy. .El -.Sh LOCKS -.Va mnt_lock -must be locked in -.Fa mp -prior to calling -this function, and it will be unlocked upon return. .Sh SEE ALSO .Xr vfs_busy 9 .Sh AUTHORS _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
