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Rafael J. Wysocki 8314418629 Freezer: make kernel threads nonfreezable by default ... Currently, the freezer treats all tasks as freezable, except for the kernel threads that explicitly set the PF_NOFREEZE flag for themselves. This approach is problematic, since it requires every kernel thread to either set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't care for the freezing of tasks at all. It seems better to only require the kernel threads that want to or need to be frozen to use some freezer-related code and to remove any freezer-related code from the other (nonfreezable) kernel threads, which is done in this patch. The patch causes all kernel threads to be nonfreezable by default (ie. to have PF_NOFREEZE set by default) and introduces the set_freezable() function that should be called by the freezable kernel threads in order to unset PF_NOFREEZE. It also makes all of the currently freezable kernel threads call set_freezable(), so it shouldn't cause any (intentional) change of behaviour to appear. Additionally, it updates documentation to describe the freezing of tasks more accurately. [akpm@linux-foundation.org: build fixes] Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		18 years ago
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Makefile	NFS: Remake nfsroot_mount as a permanent part of NFS client	18 years ago
callback.c	Freezer: make kernel threads nonfreezable by default	18 years ago
callback.h	…
callback_proc.c	…
callback_xdr.c	…
client.c	Make NFS client use seq_list_xxx helpers	18 years ago
delegation.c	NFSv4: Defer inode revalidation when setting up a delegation	18 years ago
delegation.h	NFSv4: Use RCU to protect delegations	18 years ago
dir.c	NFS: Fix an Oops in the nfs_access_cache_shrinker()	18 years ago
direct.c	NFS: Replace vfsmount and dentry in nfs_open_context with struct path	18 years ago
file.c	…
getroot.c	…
idmap.c	…
inode.c	NFSv4: Defer inode revalidation when setting up a delegation	18 years ago
internal.h	NFS: Clean-up: use correct type when converting NFS blocks to local blocks	18 years ago
iostat.h	…
mount_clnt.c	NFS: Improve debugging output in NFS in-kernel mount client	18 years ago
namespace.c	…
nfs2xdr.c	SUNRPC: Remove the tk_auth macro...	18 years ago
nfs3acl.c	…
nfs3proc.c	NFS: nfs3_proc_create() should use nfs_post_op_update_inode()	18 years ago
nfs3xdr.c	SUNRPC: Remove the tk_auth macro...	18 years ago
nfs4_fs.h	NFSv4: Make the NFS state model work with the nosharedcache mount option	18 years ago
nfs4namespace.c	…
nfs4proc.c	NFSv4: Make sure unlock is really an unlock when cancelling a lock	18 years ago
nfs4renewd.c	…
nfs4state.c	NFSv4: Make the NFS state model work with the nosharedcache mount option	18 years ago
nfs4xdr.c	NFSv4: Reduce the chances of an open_owner identifier collision	18 years ago
nfsroot.c	NFS: Remake nfsroot_mount as a permanent part of NFS client	18 years ago
pagelist.c	NFS: Replace NFS_I(inode)->req_lock with inode->i_lock	18 years ago
proc.c	…
read.c	NFS: Replace vfsmount and dentry in nfs_open_context with struct path	18 years ago
super.c	mm: clean up and kernelify shrinker registration	18 years ago
symlink.c	…
sysctl.c	…
unlink.c	…
write.c	NFS: Replace NFS_I(inode)->req_lock with inode->i_lock	18 years ago