linux/fs/nilfs2
Al Viro 1e2e547a93 do d_instantiate/unlock_new_inode combinations safely
For anything NFS-exported we do _not_ want to unlock new inode
before it has grown an alias; original set of fixes got the
ordering right, but missed the nasty complication in case of
lockdep being enabled - unlock_new_inode() does
	lockdep_annotate_inode_mutex_key(inode)
which can only be done before anyone gets a chance to touch
->i_mutex.  Unfortunately, flipping the order and doing
unlock_new_inode() before d_instantiate() opens a window when
mkdir can race with open-by-fhandle on a guessed fhandle, leading
to multiple aliases for a directory inode and all the breakage
that follows from that.

	Correct solution: a new primitive (d_instantiate_new())
combining these two in the right order - lockdep annotate, then
d_instantiate(), then the rest of unlock_new_inode().  All
combinations of d_instantiate() with unlock_new_inode() should
be converted to that.

Cc: stable@kernel.org	# 2.6.29 and later
Tested-by: Mike Marshall <hubcap@omnibond.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-05-11 15:36:37 -04:00
..
Kconfig
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
alloc.c nilfs2: use i_blocksize() 2017-02-27 18:43:46 -08:00
alloc.h
bmap.c
bmap.h
btnode.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
btnode.h
btree.c mm, pagevec: remove cold parameter for pagevecs 2017-11-15 18:21:06 -08:00
btree.h
cpfile.c
cpfile.h
dat.c
dat.h
dir.c
direct.c
direct.h
export.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
file.c mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf 2017-02-24 17:46:54 -08:00
gcinode.c
ifile.c
ifile.h
inode.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
ioctl.c
mdt.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
mdt.h
namei.c do d_instantiate/unlock_new_inode combinations safely 2018-05-11 15:36:37 -04:00
nilfs.h
page.c page cache: use xa_lock 2018-04-11 10:28:39 -07:00
page.h
recovery.c
segbuf.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
segbuf.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
segment.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
segment.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sufile.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sufile.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
super.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sysfs.c nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00
sysfs.h
the_nilfs.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
the_nilfs.h nilfs2: use time64_t internally 2018-02-06 18:32:45 -08:00