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path: root/fs/jfs/jfs_txnmgr.c
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2024-01-02jfs: Add missing set_freezable() for freezable kthreadKevin Hao
The kernel thread function jfs_lazycommit() and jfs_sync() invoke the try_to_freeze() in its loop. But all the kernel threads are no-freezable by default. So if we want to make a kernel thread to be freezable, we have to invoke set_freezable() explicitly. Signed-off-by: Kevin Hao <haokexin@gmail.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2023-10-13jfs: define xtree root and page independentlyDave Kleikamp
In order to make array bounds checking sane, provide a separate definition of the in-inode xtree root and the external xtree page. Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Tested-by: Manas Ghandat <ghandatmanas@gmail.com>
2023-06-23FS: JFS: Check for read-only mounted filesystem in txBeginImmad Mir
This patch adds a check for read-only mounted filesystem in txBegin before starting a transaction potentially saving from NULL pointer deref. Signed-off-by: Immad Mir <mirimmad17@gmail.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2022-04-25fs/jfs: Remove dead codeDave Kleikamp
Since the JFS code was first added to Linux, there has been code hidden in ifdefs for some potential future features such as defragmentation and supporting block sizes other than 4KB. There has been no ongoing development on JFS for many years, so it's past time to remove this dead code from the source. Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2021-05-21jfs: Remove trailing semicolon in macrosHuilong Deng
Macros should not use a trailing semicolon. Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2021-02-08jfs: turn diLog(), dataLog() and txLog() into void functionsYang Li
These functions always return '0' and no callers use the return value. So make it a void function. This eliminates the following coccicheck warning: ./fs/jfs/jfs_txnmgr.c:1365:5-7: Unneeded variable: "rc". Return "0" on line 1414 ./fs/jfs/jfs_txnmgr.c:1422:5-7: Unneeded variable: "rc". Return "0" on line 1527 Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2020-11-13jfs: delete duplicated words + other fixesRandy Dunlap
Delete repeated words in fs/jfs/. {for, allocation, if, the} Insert "is" in one place to correct the grammar. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> To: linux-fsdevel@vger.kernel.org Cc: jfs-discussion@lists.sourceforge.net
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-22jfs: fix bogus variable self-initializationArnd Bergmann
A statement was originally added in 2006 to shut up a gcc warning, now but now clang warns about it: fs/jfs/jfs_txnmgr.c:1932:15: error: variable 'pxd' is uninitialized when used within its own initialization [-Werror,-Wuninitialized] pxd_t pxd = pxd; /* truncated extent of xad */ ~~~ ^~~ Modern versions of gcc are fine without the silly assignment, so just drop it. Tested with gcc-4.6 (released 2011), 4.7, 4.8, and 4.9. Fixes: c9e3ad6021e5 ("JFS: Get rid of "may be used uninitialized" warnings") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2018-05-16jfs: simplify procfs codeChristoph Hellwig
Use remove_proc_subtree to remove the whole subtree on cleanup, and unwind the registration loop into individual calls. Switch to use proc_create_seq where applicable. Signed-off-by: Christoph Hellwig <hch@lst.de>
2016-09-06jfs: Simplify codeChristophe JAILLET
Calling 'list_splice' followed by 'INIT_LIST_HEAD' is equivalent to 'list_splice_init'. This has been spotted with the following coccinelle script: ///// @@ expression y,z; @@ - list_splice(y,z); - INIT_LIST_HEAD(y); + list_splice_init(y,z); Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2016-05-29drop redundant ->owner initializationsAl Viro
it's not needed for file_operations of inodes located on fs defined in the hosting module and for file_operations that go into procfs. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-03-30jfs: Coalesce some formatsJoe Perches
Formats are better kept as a single line for easier grep. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2016-03-30jfs: Remove terminating newlines from jfs_info, jfs_warn, jfs_err usesJoe Perches
These macros add the newline so these cause extra blank lines in logging output. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2014-09-19sched, cleanup, treewide: Remove set_current_state(TASK_RUNNING) after ↵Kirill Tkhai
schedule() schedule(), io_schedule() and schedule_timeout() always return with TASK_RUNNING state set, so one more setting is unnecessary. (All places in patch are visible good, only exception is kiblnd_scheduler() from: drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.c Its schedule() is one line above standard 3 lines of unified diff) No places where set_current_state() is used for mb(). Signed-off-by: Kirill Tkhai <ktkhai@parallels.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://lkml.kernel.org/r/1410529254.3569.23.camel@tkhai Cc: Alasdair Kergon <agk@redhat.com> Cc: Anil Belur <askb23@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dave Kleikamp <shaggy@kernel.org> Cc: David Airlie <airlied@linux.ie> Cc: David Howells <dhowells@redhat.com> Cc: Dmitry Eremin <dmitry.eremin@intel.com> Cc: Frank Blaschka <blaschka@linux.vnet.ibm.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Isaac Huang <he.huang@intel.com> Cc: James E.J. Bottomley <JBottomley@parallels.com> Cc: James E.J. Bottomley <jejb@parisc-linux.org> Cc: J. Bruce Fields <bfields@fieldses.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Laura Abbott <lauraa@codeaurora.org> Cc: Liang Zhen <liang.zhen@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Masaru Nomura <massa.nomura@gmail.com> Cc: Michael Opdenacker <michael.opdenacker@free-electrons.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Neil Brown <neilb@suse.de> Cc: Oleg Drokin <green@linuxhacker.ru> Cc: Peng Tao <bergwolf@gmail.com> Cc: Richard Weinberger <richard@nod.at> Cc: Robert Love <robert.w.love@intel.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Ursula Braun <ursula.braun@de.ibm.com> Cc: Zi Shen Lim <zlim.lnx@gmail.com> Cc: devel@driverdev.osuosl.org Cc: dm-devel@redhat.com Cc: dri-devel@lists.freedesktop.org Cc: fcoe-devel@open-fcoe.org Cc: jfs-discussion@lists.sourceforge.net Cc: linux390@de.ibm.com Cc: linux-afs@lists.infradead.org Cc: linux-cris-kernel@axis.com Cc: linux-kernel@vger.kernel.org Cc: linux-nfs@vger.kernel.org Cc: linux-parisc@vger.kernel.org Cc: linux-raid@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: linux-scsi@vger.kernel.org Cc: qla2xxx-upstream@qlogic.com Cc: user-mode-linux-devel@lists.sourceforge.net Cc: user-mode-linux-user@lists.sourceforge.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-06-05jfs: Update jfs_errorJoe Perches
Use a more current logging style. Add __printf format and argument verification. Remove embedded function names from formats. Add %pf, __builtin_return_address(0) to jfs_error. Add newlines to formats for kernel style consistency. (One format already had an erroneous newline) Coalesce formats and align arguments. Object size reduced ~1KiB. $ size fs/jfs/built-in.o* text data bss dec hex filename 201891 35488 63936 301315 49903 fs/jfs/built-in.o.new 202821 35488 64192 302501 49da5 fs/jfs/built-in.o.old Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2012-09-17JFS: use list_move instead of list_del/list_addWei Yongjun
Using list_move() instead of list_del() + list_add(). spatch with a semantic match is used to found this problem. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2011-11-21freezer: unexport refrigerator() and update try_to_freeze() slightlyTejun Heo
There is no reason to export two functions for entering the refrigerator. Calling refrigerator() instead of try_to_freeze() doesn't save anything noticeable or removes any race condition. * Rename refrigerator() to __refrigerator() and make it return bool indicating whether it scheduled out for freezing. * Update try_to_freeze() to return bool and relay the return value of __refrigerator() if freezing(). * Convert all refrigerator() users to try_to_freeze(). * Update documentation accordingly. * While at it, add might_sleep() to try_to_freeze(). Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Chris Mason <chris.mason@oracle.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Kara <jack@suse.cz> Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Cc: Christoph Hellwig <hch@infradead.org>
2011-07-25jfs: clean up some compiler warningsDave Kleikamp
jfs has a few variables being set but never used. Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
2011-03-31Fix common misspellingsLucas De Marchi
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2010-10-25new helper: ihold()Al Viro
Clones an existing reference to inode; caller must already hold one. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-17kill I_LOCKChristoph Hellwig
After I_SYNC was split from I_LOCK the leftover is always used together with I_NEW and thus superflous. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-05-13JFS: switch to seq_filesAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-10-17introduce I_SYNCJoern Engel
I_LOCK was used for several unrelated purposes, which caused deadlock situations in certain filesystems as a side effect. One of the purposes now uses the new I_SYNC bit. Also document the various bits and change their order from historical to logical. [bunk@stusta.de: make fs/inode.c:wake_up_inode() static] Signed-off-by: Joern Engel <joern@wohnheim.fh-wedel.de> Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com> Cc: David Chinner <dgc@sgi.com> Cc: Anton Altaparmakov <aia21@cam.ac.uk> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-13JFS: Update print_hex_dump() syntaxDave Kleikamp
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06JFS: use print_hex_dump() rather than private dump_mem() functionDave Kleikamp
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-06-06JFS: Whitespace cleanup and remove some dead codeDave Kleikamp
Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-05-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: JFS: Fix race waking up jfsIO kernel thread JFS: use __set_current_state() Copy i_flags to jfs inode flags on write JFS: document uid, gid, and umask mount options in jfs.txt
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-26JFS: use __set_current_state()Milind Arun Choudhary
use __set_current_state(TASK_*) instead of current->state = TASK_* Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
2007-02-09JFS: Get rid of "may be used uninitialized" warningsDave Kleikamp
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2007-01-17JFS: call io_schedule() instead of schedule() to avoid deadlockDave Kleikamp
The introduction of Jens Axboe's explicit i/o plugging patches introduced a deadlock in jfs. This was caused by the process initiating I/O not unplugging the queue before waiting on the commit thread. The commit thread itself was waiting for that I/O to complete. Calling io_schedule() rather than schedule() unplugs the I/O queue avoiding the deadlock, and it appears to be the right function to call in any case. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2006-12-07[PATCH] Add include/linux/freezer.h and move definitions from sched.hNigel Cunningham
Move process freezing functions from include/linux/sched.h to freezer.h, so that modifications to the freezer or the kernel configuration don't require recompiling just about everything. [akpm@osdl.org: fix ueagle driver] Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02JFS: White space cleanupDave Kleikamp
Removed trailing spaces & tabs, and spaces preceding tabs. Also a couple very minor comment cleanups. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> (cherry picked from f74156539964d7b3d5164fdf8848e6a682f75b97 commit)
2006-10-02JFS: Remove shadow variable from fs/jfs/jfs_txnmgr.c:xtLog()Tony Breeds
Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com> (cherry picked from bdc3d9e5af7d9c105be734dd7b5c3f1d9425a15a commit)
2006-10-01[PATCH] fs/jfs: Conversion to generic booleanRichard Knutsson
Conversion of booleans to: generic-boolean.patch (2006-08-23) Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27[PATCH] fs: Removing useless castsPanagiotis Issaris
* Removing useless casts * Removing useless wrapper * Conversion from kmalloc+memset to kzalloc Signed-off-by: Panagiotis Issaris <takis@issaris.org> Acked-by: Dave Kleikamp <shaggy@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-15Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6: JFS: commit_mutex cleanups
2006-06-30typo fixes: aquire -> acquireAdrian Bunk
Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-06-05JFS: commit_mutex cleanupsEvgeniy Dushistov
I look at code, and see that 1)locks wasn't release in the opposite order in which they were taken 2)in jfs_rename we lock new_ip, and in "error path" we didn't unlock it 3)I see strange expression: "! !" May be this worth to fix? Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2006-02-15JFS: Use the kthread_ APIChristoph Hellwig
Use the kthread_ API instead of opencoding lots of hairy code for kernel thread creation and teardown. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2006-01-24JFS: semaphore to mutex conversion.Ingo Molnar
the conversion was generated via scripts, and the result was validated automatically via a script as well. build and boot tested. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2006-01-08[PATCH] Fix and add EXPORT_SYMBOL(filemap_write_and_wait)OGAWA Hirofumi
This patch add EXPORT_SYMBOL(filemap_write_and_wait) and use it. See mm/filemap.c: And changes the filemap_write_and_wait() and filemap_write_and_wait_range(). Current filemap_write_and_wait() doesn't wait if filemap_fdatawrite() returns error. However, even if filemap_fdatawrite() returned an error, it may have submitted the partially data pages to the device. (e.g. in the case of -ENOSPC) <quotation> Andrew Morton writes, If filemap_fdatawrite() returns an error, this might be due to some I/O problem: dead disk, unplugged cable, etc. Given the generally crappy quality of the kernel's handling of such exceptions, there's a good chance that the filemap_fdatawait() will get stuck in D state forever. </quotation> So, this patch doesn't wait if filemap_fdatawrite() returns the -EIO. Trond, could you please review the nfs part? Especially I'm not sure, nfs must use the "filemap_fdatawrite(inode->i_mapping) == 0", or not. Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-03JFS: make special inodes play nicely with page balancingDave Kleikamp
This patch fixes up a few problems with jfs's reserved inodes. 1. There is no need for the jfs code setting the I_DIRTY bits in i_state. I am ashamed that the code ever did this, and surprised it hasn't been noticed until now. 2. Make sure special inodes are on an inode hash list. If the inodes are unhashed, __mark_inode_dirty will fail to put the inode on the superblock's dirty list, and the data will not be flushed under memory pressure. 3. Force writing journal data to disk when metapage_writepage is unable to write a metadata page due to pending journal I/O. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-09-20JFS: don't dereference tlck->ip from txUpdateMapDave Kleikamp
The inode pointer may no longer be valid Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-09-15JFS: Fix sparse warnings, including endian errorDave Kleikamp
The fix in inode.c is a real bug. It could result in undeleted, yet unconnected files on big-endian hardware. The others are trivial. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-08-10JFS: Fix race in txLockDave Kleikamp
TxAnchor.anon_list is protected by jfsTxnLock (TXN_LOCK), but there was a place in txLock() that was removing an entry from the list without holding the spinlock. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-07-27JFS: Improve sync barrier processingDave Kleikamp
Under heavy load, hot metadata pages are often locked by non-committed transactions, making them difficult to flush to disk. This prevents the sync point from advancing past a transaction that had modified the page. There is a point during the sync barrier processing where all outstanding transactions have been committed to disk, but no new transaction have been allowed to proceed. This is the best time to write the metadata. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
2005-06-25[PATCH] Cleanup patch for process freezingChristoph Lameter
1. Establish a simple API for process freezing defined in linux/include/sched.h: frozen(process) Check for frozen process freezing(process) Check if a process is being frozen freeze(process) Tell a process to freeze (go to refrigerator) thaw_process(process) Restart process frozen_process(process) Process is frozen now 2. Remove all references to PF_FREEZE and PF_FROZEN from all kernel sources except sched.h 3. Fix numerous locations where try_to_freeze is manually done by a driver 4. Remove the argument that is no longer necessary from two function calls. 5. Some whitespace cleanup 6. Clear potential race in refrigerator (provides an open window of PF_FREEZE cleared before setting PF_FROZEN, recalc_sigpending does not check PF_FROZEN). This patch does not address the problem of freeze_processes() violating the rule that a task may only modify its own flags by setting PF_FREEZE. This is not clean in an SMP environment. freeze(process) is therefore not SMP safe! Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-04JFS: fix sparse warnings by moving extern declarations to headersDave Kleikamp
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>