linux.git/fs/minix/bitmap.c, branch v4.6

minix zmap block counts calculation fix

2014-08-08T22:57:20+00:00

The original minix zmap blocks calculation was correct, in the formula of:

	sbi->s_nzones - sbi->s_firstdatazone + 1

It is

	sp->s_zones - (sp->s_firstdatazone - 1)

in the minix3 source code.

But a later commit 016e8d44bc06 ("fs/minix: Verify bitmap block counts
before mounting") has changed it unfortunately as:

  sbi->s_nzones - (sbi->s_firstdatazone + 1)

This would show free blocks one block less than the real when the total
data blocks are in "full zmap blocks plus one".

This patch corrects that zmap blocks calculation and tidy a printk
message while at it.

Signed-off-by: Qi Yong 
Cc: Josh Boyer 
Cc: Al Viro 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

minix: propagate umode_t

2012-01-04T03:54:59+00:00

Signed-off-by: Al Viro

minixfs: kill manual hweight(), simplify

2011-11-19T16:13:28+00:00

Signed-off-by: Al Viro

fs/minix: Verify bitmap block counts before mounting

2011-11-19T16:13:26+00:00

Newer versions of MINIX can create filesystems that allocate an extra
bitmap block.  Mounting of this succeeds, but doing a statfs call will
result in an oops in count_free because of a negative number being used
for the bh index.

Avoid this by verifying the number of allocated blocks at mount time,
erroring out if there are not enough and make statfs ignore the extras
if there are too many.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=18792

Signed-off-by: Josh Boyer 
Signed-off-by: Al Viro

switch minix to ->evict_inode(), fix write_inode/delete_inode race

2010-08-09T20:47:53+00:00

We need to wait for completion of possible writeback in progress
before we clear on-disk inode during deletion.

Signed-off-by: Al Viro

minix: replace inode uid,gid,mode init with helper

2010-05-21T22:31:24+00:00

- also redesign minix_new_inode interface

Signed-off-by: Dmitry Monakhov 
Signed-off-by: Al Viro

get rid of BKL in fs/minix

2009-06-17T04:36:37+00:00

Signed-off-by: Al Viro

CRED: Wrap task credential accesses in the Minix filesystem

2008-11-13T23:38:57+00:00

Wrap access to task credentials so that they can be separated more easily from
the task_struct during the introduction of COW creds.

Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

Change some task->e?[ug]id to task_e?[ug]id().  In some places it makes more
sense to use RCU directly rather than a convenient wrapper; these will be
addressed by later patches.

Signed-off-by: David Howells 
Reviewed-by: James Morris 
Acked-by: Serge Hallyn 
Signed-off-by: James Morris

fs: mark nibblemap const

2007-10-17T15:42:47+00:00

Signed-off-by: Philippe De Muyter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Detach sched.h from mm.h

2007-05-21T16:18:19+00:00

First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.

This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
   getting them indirectly

Net result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
   they don't need sched.h
b) sched.h stops being dependency for significant number of files:
   on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
   after patch it's only 3744 (-8.3%).

Cross-compile tested on

	all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
	alpha alpha-up
	arm
	i386 i386-up i386-defconfig i386-allnoconfig
	ia64 ia64-up
	m68k
	mips
	parisc parisc-up
	powerpc powerpc-up
	s390 s390-up
	sparc sparc-up
	sparc64 sparc64-up
	um-x86_64
	x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig

as well as my two usual configs.

Signed-off-by: Alexey Dobriyan 
Signed-off-by: Linus Torvalds