Commit Graph

6138 Commits

Author SHA1 Message Date
Al Viro
5f47c7eac6 coda breakage
a) switch by loff_t == __cmpdi2 use.  Replaced with a couple
of obvious ifs; update of ->f_pos in the first one makes sure that we
do the right thing in all cases.
	b) block_signals() and unblock_signals() are globals on UML.
Renamed coda ones; in principle UML probably ought to do rename as
well, but that's another story.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 16:29:55 -07:00
Linus Torvalds
fdb64f93b3 Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6:
  [XFS] Fix inode size update before data write in xfs_setattr
  [XFS] Allow punching holes to free space when at ENOSPC
  [XFS] Implement ->page_mkwrite in XFS.
  [FS] Implement block_page_mkwrite.

Manually fix up conflict with Nick's VM fault handling patches in
fs/xfs/linux-2.6/xfs_file.c

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 14:41:33 -07:00
Linus Torvalds
3e1f900bff Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
* git://git.linux-nfs.org/pub/linux/nfs-2.6:
  NFSv4: handle lack of clientaddr in option string
  NFSv4: debug print ntohl(status) in nfs client callback xdr code
  SUNRPC: Clean up the sillyrename code
  NFS: Introduce struct nfs_removeargs+nfs_removeres
  NFS: Use dentry->d_time to store the parent directory verifier.
  SUNRPC: move bkl locking and xdr proc invocation into a common helper
  NFSv4: Fix the nfsv4 readlink reply buffer alignment
  NFSv4: Fix the readdir reply buffer alignment
  NFSv4: More NFSv4 xdr cleanups
  NFSv4: Try to recover from getfh failures in nfs4_xdr_dec_open
  NFSv4: 'constify' lookup arguments.
  NFSv4: Don't fail nfs4_xdr_dec_open if decode_restorefh() failed
  NFSv4: Fix open state recovery
  NFSD/SUNRPC: Fix the automatic selection of RPCSEC_GSS
2007-07-19 14:33:41 -07:00
Linus Torvalds
f745bb1c73 Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
  ocfs2: ->fallocate() support
2007-07-19 14:16:44 -07:00
Jeff Layton
0a87cf128f NFSv4: handle lack of clientaddr in option string
If a NFSv4 mount is attempted  with string based options, and the
option string doesn't contain a clientaddr= option, the kernel will
currently oops. Check for this situation and return a proper error.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:21:40 -04:00
Benny Halevy
f9d888fcd9 NFSv4: debug print ntohl(status) in nfs client callback xdr code
status in nfs client callback xdr code is passed in network order.
print it in host order for better readability.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:21:40 -04:00
Trond Myklebust
e4eff1a622 SUNRPC: Clean up the sillyrename code
Fix a couple of bugs:
 - Don't rely on the parent dentry still being valid when the call completes.
   Fixes a race with shrink_dcache_for_umount_subtree()

 - Don't remove the file if the filehandle has been labelled as stale.

Fix a couple of inefficiencies
 - Remove the global list of sillyrenamed files. Instead we can cache the
   sillyrename information in the dentry->d_fsdata
 - Move common code from unlink_setup/unlink_done into fs/nfs/unlink.c

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:21:39 -04:00
Trond Myklebust
4fdc17b2a7 NFS: Introduce struct nfs_removeargs+nfs_removeres
We need a common structure for setting up an unlink() rpc call in order to
fix the asynchronous unlink code.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:21:39 -04:00
Trond Myklebust
3062c532ad NFS: Use dentry->d_time to store the parent directory verifier.
This will free up the d_fsdata field for other use.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:21:39 -04:00
Trond Myklebust
e3a535e173 NFSv4: Fix the nfsv4 readlink reply buffer alignment
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:04 -04:00
Trond Myklebust
d6ac02dfaa NFSv4: Fix the readdir reply buffer alignment
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:04 -04:00
Trond Myklebust
9104a55dc3 NFSv4: More NFSv4 xdr cleanups
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:04 -04:00
Trond Myklebust
9936781d01 NFSv4: Try to recover from getfh failures in nfs4_xdr_dec_open
Try harder to recover the open state if the server failed to return a
filehandle.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:03 -04:00
Trond Myklebust
56659e9926 NFSv4: 'constify' lookup arguments.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:03 -04:00
Trond Myklebust
365c8f589a NFSv4: Don't fail nfs4_xdr_dec_open if decode_restorefh() failed
We can already easily recover from that inside _nfs4_proc_open().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:03 -04:00
Trond Myklebust
6f220ed5a8 NFSv4: Fix open state recovery
Ensure that opendata->state is always initialised when we do state
recovery.

Ensure that we set the filehandle in the case where we're doing an
"OPEN_CLAIM_PREVIOUS" call due to a server reboot.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:03 -04:00
Trond Myklebust
8cd69e1bc7 NFSD/SUNRPC: Fix the automatic selection of RPCSEC_GSS
Bruce's patch broke the ability to compile RPCSEC_GSS as a module.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19 15:09:02 -04:00
Andrew Morton
275afcac99 afs build fix
Bruce and David's patches clashed.

fs/afs/flock.c: In function 'afs_do_getlk':
fs/afs/flock.c:459: error: void value not ignored as it ought to be

Cc: "J. Bruce Fields" <bfields@fieldses.org>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:57 -07:00
J. Bruce Fields
c7d51402d2 knfsd: clean up EX_RDONLY
Share a little common code, reverse the arguments for consistency, drop the
unnecessary "inline", and lowercase the name.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:52 -07:00
J. Bruce Fields
e22841c637 knfsd: move EX_RDONLY out of header
EX_RDONLY is only called in one place; just put it there.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:52 -07:00
J. Bruce Fields
5d3dbbeaf5 nfsd: remove unnecessary NULL checks from nfsd_cross_mnt
We can now assume that rqst_exp_get_by_name() does not return NULL; so clean
up some unnecessary checks.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:52 -07:00
J. Bruce Fields
9a25b96c1f nfsd: return errors, not NULL, from export functions
I converted the various export-returning functions to return -ENOENT instead
of NULL, but missed a few cases.

This particular case could cause actual bugs in the case of a krb5 client that
doesn't match any ip-based client and that is trying to access a filesystem
not exported to krb5 clients.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:52 -07:00
J. Bruce Fields
a280df32db nfsd: fix possible read-ahead cache and export table corruption
The value of nperbucket calculated here is too small--we should be rounding up
instead of down--with the result that the index j in the following loop can
overflow the raparm_hash array.  At least in my case, the next thing in memory
turns out to be export_table, so the symptoms I see are crashes caused by the
appearance of four zeroed-out export entries in the first bucket of the hash
table of exports (which were actually entries in the readahead cache, a
pointer to which had been written to the export table in this initialization
code).

It looks like the bug was probably introduced with commit
fce1456a19 ("knfsd: make the readahead params
cache SMP-friendly").

Cc: <stable@kernel.org>
Cc: Greg Banks <gnb@melbourne.sgi.com>
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:52 -07:00
Yoann Padioleau
dd00cc486a some kmalloc/memset ->kzalloc (tree wide)
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation:

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x =
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);

@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)

[akpm@linux-foundation.org: get kcalloc args the right way around]
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Acked-by: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Dave Airlie <airlied@linux.ie>
Acked-by: Roland Dreier <rolandd@cisco.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Acked-by: Pierre Ossman <drzeus-list@drzeus.cx>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Greg KH <greg@kroah.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:50 -07:00
Jan Harkes
5b7f13bd26 coda: update module information
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:49 -07:00
Jan Harkes
3cf01f28c3 coda: remove statistics counters from /proc/fs/coda
Similar information can easily be obtained with strace -c.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
a1b0aa8764 coda: remove struct coda_sb_info
The sb_info structure only contains a single pointer to the character device,
there is no need for the added indirection.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
5fd31e9a67 coda: cleanup downcall handler
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
ed36f72367 coda: cleanup coda_lookup, use dsplice_alias
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
970648eb03 coda: ignore returned values when upcalls return errors
Venus returns an ENOENT error on open, so we shouldn't try to grab the
filehandle for the returned fd.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
37461e1957 coda: replace upc_alloc/upc_free with kmalloc/kfree
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
978752534e coda: avoid lockdep warning in coda_readdir
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
d9664c95af coda: block signals during upcall processing
We ignore signals for about 30 seconds to give userspace a chance to see the
upcall.  As we did not block signals we ended up in a busy loop for the
remainder of the period when a signal is received.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
fe71b5f387 coda: cleanup for upcall handling path
Make the code that processes upcall responses more straightforward, uncovered
at least one bad assumption.  We trusted that vc_inuse would be 0 when upcalls
are aborted, however the device may have been reopened.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
8706551963 coda: cleanup /dev/cfs open and close handling
- Make sure device index is not a negative number.
- Unlink queued requests when the device is closed to avoid passing them
  to the next opener.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
ed31a7dd63 coda: use ilookup5
Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
fac1f0e340 coda: coda doesn't track atime
Set MS_NOATIME flag to avoid unnecessary calls when the coda inode is
accessed.

Also, set statfs.f_bsize to 4k.  1k is obviously too small for the suggested
IO size.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
8c6d215284 coda: allow removal of busy directories
A directory without children may still be busy when it is the cwd for some
process.  We can safely remove such a directory because the VFS prevents
further operations.  Also we don't need to call d_delete as it is already
called in vfs_rmdir.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
d728900cd5 coda: fix nlink updates for directories
The Coda client sets the directory link count to 1 when it isn't sure how many
subdirectories we have.  In this case we shouldn't change the link count in
the kernel when a subdirectory is created or removed.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
56ee354794 coda: correctly invalidate cached access rights
Change the epoch value to forces a refresh instead of clearing the cached
rights mask and block all further accesses to the object.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Jan Harkes
38c2e4370d coda: do not grab an uninitialized fd when the open upcall returns an error
When open fails the fd in the response is uninitialized and we ended up taking
a reference on the file struct and never released it.

Signed-off-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:48 -07:00
Mingming Cao
b38bd33a6b fix ext4/JBD2 build warnings
Looking at the current linus-git tree jbd_debug() define in
include/linux/jbd2.h

extern u8 journal_enable_debug;

#define jbd_debug(n, f, a...)                                           \
        do {                                                            \
                if ((n) <= journal_enable_debug) {                      \
                        printk (KERN_DEBUG "(%s, %d): %s: ",            \
                                __FILE__, __LINE__, __FUNCTION__);      \
                        printk (f, ## a);                               \
                }                                                       \
        } while (0)
> fs/ext4/inode.c: In function ‘ext4_write_inode’:
> fs/ext4/inode.c:2906: warning: comparison is always true due to limited
> range of data type
>
> fs/jbd2/recovery.c: In function ‘jbd2_journal_recover’:
> fs/jbd2/recovery.c:254: warning: comparison is always true due to
> limited range of data type
> fs/jbd2/recovery.c:257: warning: comparison is always true due to
> limited range of data type
>
> fs/jbd2/recovery.c: In function ‘jbd2_journal_skip_recovery’:
> fs/jbd2/recovery.c:301: warning: comparison is always true due to
> limited range of data type
>
Noticed all warnings are occurs when the debug level is 0. Then found
the "jbd2: Move jbd2-debug file to debugfs" patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0f49d5d019afa4e94253bfc92f0daca3badb990b

changed the jbd2_journal_enable_debug from int type to u8, makes the
jbd_debug comparision is always true when the debugging level is 0. Thus
the compile warning occurs.

Thought about changing the jbd2_journal_enable_debug data type back to
int, but can't, because the jbd2-debug is moved to debug fs, where
calling debugfs_create_u8() to create the debugfs entry needs the value
to be u8 type.

Even if we changed the data type back to int, the code is still buggy,
kernel should not print jbd2 debug message if the
jbd2_journal_enable_debug is set to 0. But this is not the case.

The fix is change the level of debugging to 1. The same should fixed in
ext3/JBD, but currently ext3 jbd-debug via /proc fs is broken, so we
probably should fix it all together.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Theodore Tso <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:47 -07:00
Kawai, Hidehiro
ee78b0a61f coredump masking: ELF-FDPIC: enable core dump filtering
This patch enables core dump filtering for ELF-FDPIC-formatted core file.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:47 -07:00
Kawai, Hidehiro
e2e00906a0 coredump masking: ELF-FDPIC: remove an unused argument
This patch removes an unused argument from elf_fdpic_dump_segments().

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:47 -07:00
Kawai, Hidehiro
a1b59e802f coredump masking: ELF: enable core dump filtering
This patch enables core dump filtering for ELF-formatted core file.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:47 -07:00
Kawai, Hidehiro
3cb4a0bb1e coredump masking: add an interface for core dump filter
This patch adds an interface to set/reset flags which determines each memory
segment should be dumped or not when a core file is generated.

/proc/<pid>/coredump_filter file is provided to access the flags.  You can
change the flag status for a particular process by writing to or reading from
the file.

The flag status is inherited to the child process when it is created.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:47 -07:00
Kawai, Hidehiro
6c5d523826 coredump masking: reimplementation of dumpable using two flags
This patch changes mm_struct.dumpable to a pair of bit flags.

set_dumpable() converts three-value dumpable to two flags and stores it into
lower two bits of mm_struct.flags instead of mm_struct.dumpable.
get_dumpable() behaves in the opposite way.

[akpm@linux-foundation.org: export set_dumpable]
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:46 -07:00
Josef 'Jeff' Sipek
f79c20f525 fs: remove path_walk export
Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@suse.de>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00
Josef 'Jeff' Sipek
c4a7808fc3 fs: mark link_path_walk static
Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@suse.de>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00
Josef 'Jeff' Sipek
16b6287a52 nfsctl: use vfs_path_lookup
use vfs_path_lookup instead of open-coding the necessary functionality.

Signed-off-by: Josef 'Jeff' Sipek <jsipek@cs.sunysb.edu>
Acked-by: NeilBrown <neilb@suse.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19 10:04:45 -07:00