Commit graph

26 commits

Author SHA1 Message Date
Alexey Dobriyan
405f55712d headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12 12:22:34 -07:00
Christoph Hellwig
6cfd014842 push BKL down into ->put_super
Move BKL into ->put_super from the only caller.  A couple of
filesystems had trivial enough ->put_super (only kfree and NULLing of
s_fs_info + stuff in there) to not get any locking: coda, cramfs, efs,
hugetlbfs, omfs, qnx4, shmem, all others got the full treatment.  Most
of them probably don't need it, but I'd rather sort that out individually.
Preferably after all the other BKL pushdowns in that area.

[AV: original used to move lock_super() down as well; these changes are
removed since we don't do lock_super() at all in generic_shutdown_super()
now]
[AV: fuse, btrfs and xfs are known to need no damn BKL, exempt]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-11 21:36:07 -04:00
Phillip Lougher
e5d287539d Squashfs: cody tidying, remove commented out line in Makefile
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-05-13 03:25:20 +01:00
Phillip Lougher
fffb47b80e Squashfs: check page size is not larger than the filesystem block size
Normally the block size (by default 128K) will be larger than the
page size, unless a non-standard block size has been specified in
Mksquashfs, and the page size is larger than 4K.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-05-13 02:59:26 +01:00
Doug Chapman
a37b06d589 Squashfs: fix breakage when page size > metadata block size
Squashfs is broken on any system where the page size is larger than
the metadata size (8192).  This is easily fixed by ensuring cache->pages
is always > 0.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Doug Chapman <doug.chapman@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-05-13 02:56:39 +01:00
Linus Torvalds
12fe32e4f9 Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  kmemtrace: trace kfree() calls with NULL or zero-length objects
  kmemtrace: small cleanups
  kmemtrace: restore original tracing data binary format, improve ABI
  kmemtrace: kmemtrace_alloc() must fill type_id
  kmemtrace: use tracepoints
  kmemtrace, rcu: don't include unnecessary headers, allow kmemtrace w/ tracepoints
  kmemtrace, rcu: fix rcupreempt.c data structure dependencies
  kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies
  kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies
  kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c
  kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_unlzma.c
  kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_bunzip2.c
  kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.c
  kmemtrace, squashfs: fix slab.h dependency problem in squasfs
  kmemtrace, befs: fix slab.h dependency problem
  kmemtrace, security: fix linux/key.h header file dependencies
  kmemtrace, fs: fix linux/fdtable.h header file dependencies
  kmemtrace, fs: uninline simple_transaction_set()
  kmemtrace, fs, security: move alloc_secdata() and free_secdata() to linux/security.h
2009-04-06 13:30:00 -07:00
Pekka Enberg
23516dc709 kmemtrace, squashfs: fix slab.h dependency problem in squasfs
Impact: cleanup

fs/squashfs/export.c depends on slab.h without including it:

    CC      fs/squashfs/export.o
  fs/squashfs/export.c: In function ‘squashfs_read_inode_lookup_table’:
  fs/squashfs/export.c:133: error: implicit declaration of function ‘kmalloc’
  fs/squashfs/export.c:133: warning: assignment makes pointer from integer without a cast
  fs/squashfs/export.c:143: error: implicit declaration of function ‘kfree’
  make[1]: *** [fs/squashfs/export.o] Error 1
  make: *** [fs/squashfs/] Error 2

It gets included implicitly currently - but this will not be the
case with upcoming kmemtrace changes.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
LKML-Reference: <1237884999.25315.41.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-03 12:21:34 +02:00
Coly Li
2fc7f562b4 fs/squashfs: return f_fsid for statfs(2)
Make squashfs return f_fsid info for statfs(2).

Signed-off-by: Coly Li <coly.li@suse.de>
Cc: Phillip Lougher <phillip@lougher.demon.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-02 19:05:10 -07:00
Phillip Lougher
363911d027 Squashfs: Valid filesystems are flagged as bad by the corrupted fs patch
The corrupted filesystem patch added a check against zlib trying to
output too much data in the presence of data corruption.  This check
triggered if zlib_inflate asked to be called again (Z_OK) with
avail_out == 0 and no more output buffers available.  This check proves
to be rather dumb, as it incorrectly catches the case where zlib has
generated all the output, but there are still input bytes to be processed.

This patch does a number of things.  It removes the original check and
replaces it with code to not move to the next output buffer if there
are no more output buffers available, relying on zlib to error if it
wants an extra output buffer in the case of data corruption.  It
also replaces the Z_NO_FLUSH flag with the more correct Z_SYNC_FLUSH
flag, and makes the error messages more understandable to
non-technical users.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Reported-by: Stefan Lippers-Hollmann <s.L-H@gmx.de>
2009-03-12 03:23:48 +00:00
Roel Kluin
f4f8056a86 Squashfs: frag_size should be signed, as it can hold an error result
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-03-05 00:55:31 +00:00
Phillip Lougher
118e1ef6fa Squashfs: Fix oops when reading fsfuzzer corrupted filesystems
This fixes a code regression caused by the recent mainlining changes.
The recent code changes call zlib_inflate repeatedly, decompressing into
separate 4K buffers, this code didn't check for the possibility that
zlib_inflate might ask for too many buffers when decompressing corrupted
data.

Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-03-05 00:31:12 +00:00
Alexey Dobriyan
22635ec9e0 fs/Kconfig: move squashfs out
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-01-22 13:15:58 +03:00
Qinghuang Feng
1bcbf31337 btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h>
Use the standard magic.h for btrfs and squashfs.

Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
Cc: Phillip Lougher <phillip@lougher.demon.co.uk>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15 16:39:38 -08:00
Phillip Lougher
fcef6fb6c5 Squashfs: Makefiles
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:27 +00:00
Phillip Lougher
ffae2cd73a Squashfs: header files
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:27 +00:00
Phillip Lougher
e2780ab159 Squashfs: block operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:27 +00:00
Phillip Lougher
f400e12656 Squashfs: cache operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:26 +00:00
Phillip Lougher
8256c8f631 Squashfs: uid/gid lookup operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:26 +00:00
Phillip Lougher
122edd1514 Squashfs: fragment block operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:25 +00:00
Phillip Lougher
122601408d Squashfs: export operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:25 +00:00
Phillip Lougher
0aa6661905 Squashfs: super block operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:25 +00:00
Phillip Lougher
1dc4bba39d Squashfs: symlink operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:24 +00:00
Phillip Lougher
1701aecb68 Squashfs: regular file operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:24 +00:00
Phillip Lougher
07972dde75 Squashfs: directory readdir operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:23 +00:00
Phillip Lougher
c88da2c979 Squashfs: directory lookup operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:23 +00:00
Phillip Lougher
6545b246a2 Squashfs: inode operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:22 +00:00