John Baldwin 593efaf9f7 Further refine the handling of stop signals in the NFS client. The ... changes in r246417 were incomplete as they did not add explicit calls to sigdeferstop() around all the places that previously passed SBDRY to _sleep(). In addition, nfs_getcacheblk() could trigger a write RPC from getblk() resulting in sigdeferstop() recursing. Rather than manually deferring stop signals in specific places, change the VFS_*() and VOP_*() methods to defer stop signals for filesystems which request this behavior via a new VFCF_SBDRY flag. Note that this has to be a VFC flag rather than a MNTK flag so that it works properly with VFS_MOUNT() when the mount is not yet fully constructed. For now, only the NFS clients are set this new flag in VFS_SET(). A few other related changes: - Add an assertion to ensure that TDF_SBDRY doesn't leak to userland. - When a lookup request uses VOP_READLINK() to follow a symlink, mark the request as being on behalf of the thread performing the lookup (cnp_thread) rather than using a NULL thread pointer. This causes NFS to properly handle signals during this VOP on an interruptible mount. PR: kern/176179 Reported by: Russell Cattelan (sigdeferstop() recursion) Reviewed by: kib MFC after: 1 month		2013-02-21 19:02:50 +00:00
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fdt
sound
acpi_quirks2h.awk
bus_macro.sh
embed_mfs.sh
fw_stub.awk
makeobjops.awk
miidevs2h.awk
pccarddevs2h.awk
usbdevs2h.awk
vnode_if.awk	Further refine the handling of stop signals in the NFS client. The	2013-02-21 19:02:50 +00:00