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remarkable-linux/fs/xfs
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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>
2007-07-17 10:23:02 -07:00
..
linux-2.6 Freezer: make kernel threads nonfreezable by default 2007-07-17 10:23:02 -07:00
quota mm: clean up and kernelify shrinker registration 2007-07-17 10:23:00 -07:00
support [XFS] reducing the number of random number functions. 2007-05-08 13:49:03 +10:00
Kbuild
Kconfig
Makefile
Makefile-linux-2.6 [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_acl.c [XFS] Remove unused header files for MAC and CAP checking functionality. 2007-02-10 18:37:28 +11:00
xfs_acl.h
xfs_ag.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_alloc.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_alloc.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_alloc_btree.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_alloc_btree.h [XFS] Remove unused arguments from the XFS_BTREE_*_ADDR macros. 2007-02-10 18:37:33 +11:00
xfs_arch.h
xfs_attr.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_attr.h
xfs_attr_leaf.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_behavior.c
xfs_behavior.h
xfs_bit.c [XFS] Kill off xfs_count_bits 2007-07-14 15:36:43 +10:00
xfs_bit.h [XFS] Kill off xfs_count_bits 2007-07-14 15:36:43 +10:00
xfs_bmap.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_bmap.h [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_bmap_btree.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_bmap_btree.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_btree.c
xfs_btree.h [XFS] Simplify XFS min/max macros. 2007-07-14 15:36:53 +10:00
xfs_buf_item.c [XFS] Kill off xfs_count_bits 2007-07-14 15:36:43 +10:00
xfs_buf_item.h [XFS] Get rid of old 5.3/6.1 v1 log items. Cleanup patch sent in by Eric 2007-02-10 18:35:02 +11:00
xfs_clnt.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_da_btree.c [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_da_btree.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_dfrag.c [XFS] propogate return codes from flush routines 2007-05-08 13:49:27 +10:00
xfs_dfrag.h
xfs_dinode.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_dir2.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2.h
xfs_dir2_block.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_block.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_data.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_data.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_leaf.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_leaf.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_node.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_node.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_sf.c [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_sf.h [XFS] Reduce shouting by removing unnecessary macros from dir2 code. 2007-07-14 15:37:02 +10:00
xfs_dir2_trace.c
xfs_dir2_trace.h
xfs_dmapi.h
xfs_dmops.c
xfs_error.c [XFS] reducing the number of random number functions. 2007-05-08 13:49:03 +10:00
xfs_error.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_extfree_item.c [XFS] Keep stack usage down for 4k stacks by using noinline. 2007-02-10 18:34:56 +11:00
xfs_extfree_item.h
xfs_filestream.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_filestream.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_fs.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_fsops.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_fsops.h
xfs_ialloc.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_ialloc.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_ialloc_btree.c
xfs_ialloc_btree.h [XFS] Remove unused arguments from the XFS_BTREE_*_ADDR macros. 2007-02-10 18:37:33 +11:00
xfs_iget.c [XFS] Add lockdep support for XFS 2007-05-08 13:50:19 +10:00
xfs_imap.h
xfs_inode.c [XFS] Clean up function name handling in tracing code 2007-07-14 15:41:24 +10:00
xfs_inode.h [XFS] Fix lockdep annotations for xfs_lock_inodes 2007-07-14 18:09:42 +10:00
xfs_inode_item.c [XFS] Keep stack usage down for 4k stacks by using noinline. 2007-02-10 18:34:56 +11:00
xfs_inode_item.h
xfs_inum.h
xfs_iocore.c [XFS] Fix to prevent the notorious 'NULL files' problem after a crash. 2007-05-08 13:49:46 +10:00
xfs_iomap.c [XFS] Cleanup inode extent size hint extraction 2007-07-14 15:35:36 +10:00
xfs_iomap.h [XFS] Fix to prevent the notorious 'NULL files' problem after a crash. 2007-05-08 13:49:46 +10:00
xfs_itable.c [XFS] Fix XFS_IOC_FSBULKSTAT{,_SINGLE} & XFS_IOC_FSINUMBERS in compat mode 2007-07-14 15:42:50 +10:00
xfs_itable.h [XFS] Fix XFS_IOC_FSBULKSTAT{,_SINGLE} & XFS_IOC_FSINUMBERS in compat mode 2007-07-14 15:42:50 +10:00
xfs_log.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_log.h
xfs_log_priv.h
xfs_log_recover.c [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_log_recover.h
xfs_mount.c [XFS] Use do_div() on 64 bit types. 2007-07-14 15:36:08 +10:00
xfs_mount.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_mru_cache.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_mru_cache.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_qmops.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_quota.h [XFS] Fix uquota and oquota enforcement problems. 2007-05-08 13:49:33 +10:00
xfs_refcache.h
xfs_rename.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_rtalloc.c [XFS] Don't grow filesystems past the size they can index. 2007-07-14 15:21:29 +10:00
xfs_rtalloc.h [XFS] Remove a bunch of unused functions from XFS. 2007-02-10 18:37:40 +11:00
xfs_rw.c [XFS] The last argument "lsn" of xfs_trans_commit() is always called with 2007-05-08 13:48:42 +10:00
xfs_rw.h [XFS] Cleanup inode extent size hint extraction 2007-07-14 15:35:36 +10:00
xfs_sb.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_trans.c [XFS] Apply transaction delta counts atomically to incore counters 2007-07-14 15:32:09 +10:00
xfs_trans.h [XFS] Lazy Superblock Counters 2007-07-14 15:28:50 +10:00
xfs_trans_ail.c [XFS] Workaround log space issue by increasing XFS_TRANS_PUSH_AIL_RESTARTS 2007-02-10 18:35:52 +11:00
xfs_trans_buf.c
xfs_trans_extfree.c
xfs_trans_inode.c
xfs_trans_item.c
xfs_trans_priv.h
xfs_trans_space.h
xfs_types.h
xfs_utils.c [XFS] propogate return codes from flush routines 2007-05-08 13:49:27 +10:00
xfs_utils.h
xfs_vfsops.c [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_vnodeops.c [XFS] Fix lockdep annotations for xfs_lock_inodes 2007-07-14 18:09:42 +10:00