Kirk McKusick 58941b9f15 Restructuring of the soft updates code to set it up so that the ... single kernel-wide soft update lock can be replaced with a per-filesystem soft-updates lock. This per-filesystem lock will allow each filesystem to have its own soft-updates flushing thread rather than being limited to a single soft-updates flushing thread for the entire kernel. Move soft update variables out of the ufsmount structure and into their own mount_softdeps structure referenced by ufsmount field um_softdep. Eventually the per-filesystem lock will be in this structure. For now there is simply a pointer to the kernel-wide soft updates lock. Change all instances of ACQUIRE_LOCK and FREE_LOCK to pass the lock pointer in the mount_softdeps structure instead of a pointer to the kernel-wide soft-updates lock. Replace the five hash tables used by soft updates with per-filesystem copies of these tables allocated in the mount_softdeps structure. Several functions that flush dependencies when too many are allocated in the kernel used to operate across all filesystems. They are now parameterized to flush dependencies from a specified filesystem. For now, we stick with the round-robin flushing strategy when the kernel as a whole has too many dependencies allocated. While there are many lines of changes, there should be no functional change in the operation of soft updates. Tested by: Peter Holm and Scott Long Sponsored by: Netflix		2013-10-21 00:28:02 +00:00
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ffs_alloc.c	Change the cap_rights_t type from uint64_t to a structure that we can extend	2013-09-05 00:09:56 +00:00
ffs_balloc.c	Make better use of metadata area by avoiding using it for data blocks	2013-07-02 21:07:08 +00:00
ffs_extern.h	First of several cleanups to soft dependency implementation.	2013-10-20 20:41:38 +00:00
ffs_inode.c	- Convert the bufobj lock to rwlock.	2013-05-31 00:43:41 +00:00
ffs_rawread.c	Do not remap usermode pages into KVA for physio.	2013-03-19 14:43:57 +00:00
ffs_snapshot.c	Only copy as much bytes as there in superblock, instead of the full	2013-07-12 18:52:33 +00:00
ffs_softdep.c	Restructuring of the soft updates code to set it up so that the	2013-10-21 00:28:02 +00:00
ffs_subr.c
ffs_suspend.c	There are several code sequences like	2013-07-09 20:49:32 +00:00
ffs_tables.c
ffs_vfsops.c	Third of several cleanups to soft dependency implementation.	2013-10-20 21:11:40 +00:00
ffs_vnops.c	UFS support of the unmapped i/o for the user data buffers.	2013-03-19 15:08:15 +00:00
fs.h	The purpose of this change to the FFS layout policy is to reduce the	2013-03-22 21:45:28 +00:00
softdep.h	Restructuring of the soft updates code to set it up so that the	2013-10-21 00:28:02 +00:00