o bugfix
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new member ii_nfsd_readdir in struct au_iinfo.
+ new structure au_nfsd_readdir_pid.
+ new functions au_nfsd_readdir_(alloc|free|reg|unreg),
au_nfsd_do_read_lock(), au_nfsd_read_lock() and
di_nfsd_read_lock_parent().
+ new function di_nfsd_read_lock_parent().
+ new abstract function au_nfsd_read_lock().
+ in aufs_encode_fh(), support the in-readdir status by
au_nfsd_read_lock().
+ in aufs_d_revalidate(), when the dentry is the readdir-ed itself and
cannot get the write-lock, returns 'invalid' and forces re-lookup.
+ in aufs_getattr(), support the in-readdir status by
au_nfsd_read_lock().
+ in aufs_lookup(), support the in-readdir status by
di_nfsd_read_lock_parent().
+ free ii_nfsd_readdir in au_iinfo_fin().
+ stop calling lockdep_off/on().
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ add a parameter 'must_new' for au_new_inode().
+ set S_DEAD flag in aufs_unlink() and aufs_rmdir().
+ set S_DEAD flag in aufs_rename().
+ test the S_DEAD flag in reval_inode().
- bugfix: force nosubtreecheck for a branch.
o news
- new helper script 'auchk' which behaves like 'fsck' for aufs branch.
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
+ rename hin_or_fuse.c to getattr.c.
+ always force the real getattr operation for nfs branch.
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
+ show the lock status when MagicSysRq key is pressed.
+ new member si_dbg_lock in struct au_sbinfo.
+ new functions au_dbg_(locking|locked)_di_(reg|unreg),
au_dbg_lock_ii_(reg|unreg).
o misc
- refine some functions au_wkq_run(), au_wkq_wait() and au_wkq_nowait().
+ move au_wkq_wait() from wkq.h to wkq.c.
- test the kernel thread instead of trylock.
+ new function au_test_nowait_wkq().
- revise au_nwt_done() simply.
- test the kernel thread instead of trylock.
- use ZERO_PAGE().
+ for older version, new abstract functions au_zp_alloc/free().
- new generic structure au_splhead and au_spl_init() for it.
- insert minor debug functions mutex_destroy() and au_rwsem_destroy().
+ new debug macro au_rwsem_destroy().
Junjiro R. Okajima
----------------------------------------------------------------------
Index: Kconfig.in
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
Index: README
Index: util/aufs.in.5
Index: util/auchk
- new helper script 'auchk' which behaves like 'fsck' for aufs branch.
Index: local.mk
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
- new helper script 'auchk' which behaves like 'fsck' for aufs branch.
Index: fs/aufs/Makefile
Index: fs/aufs25/Makefile
Index: fs/aufs/sysaufs.c
Index: fs/aufs25/sysfs.c
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
+ rename hin_or_fuse.c to getattr.c.
Index: fs/aufs/branch.c
Index: fs/aufs25/branch.c
Index: fs/aufs/finfo.c
Index: fs/aufs25/finfo.c
Index: fs/aufs25/sbinfo.c
- insert minor debug functions mutex_destroy() and au_rwsem_destroy().
Index: fs/aufs/debug.c
Index: fs/aufs25/debug.c
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
Index: fs/aufs/debug.h
Index: fs/aufs25/debug.h
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
+ new functions au_dbg_(locking|locked)_di_(reg|unreg),
au_dbg_lock_ii_(reg|unreg).
Index: fs/aufs/dentry.c
Index: fs/aufs25/dentry.c
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ in aufs_d_revalidate(), when the dentry is the readdir-ed itself and
cannot get the write-lock, returns 'invalid' and forces re-lookup.
- insert minor debug functions mutex_destroy() and au_rwsem_destroy().
Index: fs/aufs/dentry.h
Index: fs/aufs25/dentry.h
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new function di_nfsd_read_lock_parent().
Index: fs/aufs/dinfo.c
Index: fs/aufs25/dinfo.c
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
+ call au_dbg_(locked|locking)_di_(reg|unreg).
Index: fs/aufs/dir.c
Index: fs/aufs25/dir.c
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ call au_nfsd_readdir_(alloc|reg|unreg).
+ stop calling lockdep_off/on().
Index: fs/aufs/dir.h
Index: fs/aufs25/dir.h
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new structure au_nfsd_readdir_pid.
+ new functions au_nfsd_readdir_(alloc|free|reg|unreg),
au_nfsd_do_read_lock(), au_nfsd_read_lock() and
di_nfsd_read_lock_parent().
Index: fs/aufs/export.c
Index: fs/aufs25/export.c
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new functions au_nfsd_readdir_(alloc|free|reg|unreg|test) and
au_nfsd_do_read_lock().
+ stop calling lockdep_(off|on)().
+ in aufs_encode_fh(), support the in-readdir status by
au_nfsd_read_lock().
- bugfix: force nosubtreecheck for a branch.
Index: fs/aufs/getattr.c
Index: fs/aufs/hin_or_fuse.c
Index: fs/aufs25/getattr.c
Index: fs/aufs25/hin_or_fuse.c
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
+ rename hin_or_fuse.c to getattr.c.
+ always force the real getattr operation for nfs branch.
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ in aufs_getattr(), support the in-readdir status by
au_nfsd_read_lock().
Index: fs/aufs/i_op.c
Index: fs/aufs25/i_op.c
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ in aufs_lookup(), support the in-readdir status by
di_nfsd_read_lock_parent().
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ add a parameter 'must_new' for au_new_inode().
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
Index: fs/aufs/i_op_add.c
Index: fs/aufs25/i_op_add.c
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ add a parameter 'must_new' for au_new_inode().
Index: fs/aufs/i_op_del.c
Index: fs/aufs25/i_op_del.c
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ set S_DEAD flag in aufs_unlink() and aufs_rmdir().
Index: fs/aufs/i_op_ren.c
Index: fs/aufs25/i_op_ren.c
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ set S_DEAD flag in aufs_rename().
Index: fs/aufs/iinfo.c
Index: fs/aufs25/iinfo.c
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new member ii_nfsd_readdir in struct au_iinfo.
+ free ii_nfsd_readdir in au_iinfo_fin().
- insert minor debug functions mutex_destroy() and au_rwsem_destroy().
Index: fs/aufs/inode.c
Index: fs/aufs25/inode.c
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ test the S_DEAD flag in reval_inode().
+ add a parameter 'must_new' for au_new_inode().
Index: fs/aufs/inode.h
Index: fs/aufs25/inode.h
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new member ii_nfsd_readdir in struct au_iinfo.
- bugfix: under heavy load the dead inode might be re-used because of
the race condition between S_DEAD flag and some lock-free oprations.
force 'must-new' inode in some cases.
+ add a parameter 'must_new' for au_new_inode().
- replace the automatic configuration CONFIG_AUFS_HIN_OR_FUSE by
CONFIG_AUFS_GETATTR, and support nfs branch too.
+ rename hin_or_fuse.c to getattr.c.
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
+ call au_dbg_lock_ii_(reg|unreg).
Index: fs/aufs/misc.c
Index: fs/aufs25/misc.c
- use ZERO_PAGE().
+ for older version, new abstract functions au_zp_alloc/free().
Index: fs/aufs/misc.h
Index: fs/aufs25/misc.h
- new generic structure au_splhead and au_spl_init() for it.
- insert minor debug functions mutex_destroy() and au_rwsem_destroy().
+ new debug macro au_rwsem_destroy().
Index: fs/aufs/super.c
Index: fs/aufs25/super.c
- test the kernel thread instead of trylock.
- insert minor debug functions mutex_destroy() and au_rwsem_destroy().
Index: fs/aufs/super.h
Index: fs/aufs25/super.h
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
+ new member si_dbg_lock in struct au_sbinfo.
- bugfix: NFSD issues another operation during filesystem's readdir(),
and it may cause a deadlock in aufs. check the current context is in
readdir().
+ new abstract functino au_nfsd_read_lock().
Index: fs/aufs/sysrq.c
Index: fs/aufs25/sysrq.c
- new debug configuration CONFIG_AUFS_DEBUG_LOCK.
+ new functions au_dbg_(locking|locked)_di_(reg|unreg),
au_dbg_lock_ii_(reg|unreg).
+ show the lock status when MagicSysRq key is pressed.
Index: fs/aufs/wkq.c
Index: fs/aufs25/wkq.c
Index: fs/aufs/wkq.h
Index: fs/aufs25/wkq.h
- refine some functions au_wkq_run(), au_wkq_wait() and au_wkq_nowait().
+ move au_wkq_wait() from wkq.h to wkq.c.
- test the kernel thread instead of trylock.
+ new function au_test_nowait_wkq().
- revise au_nwt_done() simply.
Index: fs/aufs/cpup.c
Index: fs/aufs25/cpup.c
Index: fs/aufs/hinode.h
Index: fs/aufs25/hinode.h
Index: fs/aufs/hinotify.c
Index: fs/aufs25/hinotify.c
Index: include/linux/aufs_type.h
- less important changes.
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