rev. 1.11 of src/sys/geom/geom_vfs.c
rev. 1.516 of src/sys/kern/vfs_bio.c
rev. 1.35 of src/sys/nfs4client/nfs4_vnops.c
rev. 1.272 of src/sys/nfsclient/nfs_vnops.c
rev. 1.195 of src/sys/sys/buf.h
rev. 1.18 of src/sys/sys/bufobj.h
rev. 1.73 of src/sys/ufs/ffs/ffs_extern.h
rev. 1.133 of src/sys/ufs/ffs/ffs_snapshot.c
rev. 1.324 of src/sys/ufs/ffs/ffs_vfsops.c
Avoid dealing with buffers in bdwrite() that are from other side of
snaplock divisor in the lock order then the buffer being written. Add
new BOP, bop_bdwrite(), to do dirty buffer flushing for same vnode in
the bdwrite(). Default implementation, bufbdflush(), refactors the code
from bdwrite(). For ffs device buffers, specialized implementation is
used.
This commit changes KPI/KBI, thus recompilation of out of tree kernel
modules is required.
Approved by: re (kensmith)
b75617bf6d