linux.git/fs/statfs.c, branch v4.13

Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-08T17:50:54+00:00

Pull misc filesystem updates from Al Viro:
 "Assorted normal VFS / filesystems stuff..."

* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  dentry name snapshots
  Make statfs properly return read-only state after emergency remount
  fs/dcache: init in_lookup_hashtable
  minix: Deinline get_block, save 2691 bytes
  fs: Reorder inode_owner_or_capable() to avoid needless
  fs: warn in case userspace lied about modprobe return

Make statfs properly return read-only state after emergency remount

2017-06-30T00:21:06+00:00

Emergency remount (sysrq-u) sets MS_RDONLY to the superblock but doesn't set
MNT_READONLY to the mount point.

Once calculate_f_flags() only check for the mount point read only state,
when setting kstatfs flags, after an emergency remount, statfs does not
report the filesystem as read-only, even though it is.

Enable flags_by_sb() to also check for superblock read only state, so the
kstatfs and consequently statfs can properly show the read-only state of
the filesystem.

Signed-off-by: Carlos Maiolino 
Signed-off-by: Al Viro

compat statfs: switch to copy_to_user()

2017-06-04T17:51:34+00:00

Signed-off-by: Al Viro

statfs: move compat syscalls from compat.c

2017-04-17T16:52:23+00:00

Signed-off-by: Al Viro

vfs: misc struct path constification

2016-12-06T00:03:49+00:00

Signed-off-by: Al Viro

vfs: allow O_PATH file descriptors for fstatfs()

2013-10-12T20:12:31+00:00

Olga reported that file descriptors opened with O_PATH do not work with
fstatfs(), found during further development of ksh93's thread support.

There is no reason to not allow O_PATH file descriptors here (fstatfs is
very much a path operation), so use "fdget_raw()".  See commit
55815f70147d ("vfs: make O_PATH file descriptors usable for 'fstat()'")
for a very similar issue reported for fstat() by the same team.

Reported-and-tested-by: ольга крыжановская 
Acked-by: Al Viro 
Cc: stable@kernel.org	# O_PATH introduced in 3.0+
Signed-off-by: Linus Torvalds

vfs: fix user_statfs to retry once on ESTALE errors

2012-12-20T23:50:07+00:00

Signed-off-by: Jeff Layton 
Signed-off-by: Al Viro

switch simple cases of fget_light to fdget

2012-09-27T02:20:08+00:00

Signed-off-by: Al Viro

switch statfs to fget_light/fput_light

2012-05-30T03:28:31+00:00

Signed-off-by: Al Viro

fs: reduce the use of module.h wherever possible

2012-02-29T00:31:58+00:00

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map
them onto including export.h -- or if the file isn't even
using those, then just delete the include.  Fix up any implicit
include dependencies that were being masked by module.h along
the way.

Signed-off-by: Paul Gortmaker