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2008-10-23ext3: add checks for errors from jbdHidehiro Kawai
If the journal has aborted due to a checkpointing failure, we have to keep the contents of the journal space. Otherwise, the filesystem will lose uncheckpointed metadata completely and become inconsistent. To avoid this, we need to keep needs_recovery flag if checkpoint has failed. With this patch, ext3_put_super() detects a checkpointing failure from the return value of journal_destroy(), then it invokes ext3_abort() to make the filesystem read only and keep needs_recovery flag. Errors from journal_flush() are also handled by this patch in some places. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Jan Kara <jack@ucw.cz> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23jbd: fix error handling for checkpoint ioHidehiro Kawai
When a checkpointing IO fails, current JBD code doesn't check the error and continue journaling. This means latest metadata can be lost from both the journal and filesystem. This patch leaves the failed metadata blocks in the journal space and aborts journaling in the case of log_do_checkpoint(). To achieve this, we need to do: 1. don't remove the failed buffer from the checkpoint list where in the case of __try_to_free_cp_buf() because it may be released or overwritten by a later transaction 2. log_do_checkpoint() is the last chance, remove the failed buffer from the checkpoint list and abort the journal 3. when checkpointing fails, don't update the journal super block to prevent the journaled contents from being cleaned. For safety, don't update j_tail and j_tail_sequence either 4. when checkpointing fails, notify this error to the ext3 layer so that ext3 don't clear the needs_recovery flag, otherwise the journaled contents are ignored and cleaned in the recovery phase 5. if the recovery fails, keep the needs_recovery flag 6. prevent cleanup_journal_tail() from being called between __journal_drop_transaction() and journal_abort() (a race issue between journal_flush() and __log_wait_for_space() Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Acked-by: Jan Kara <jack@suse.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23proc: remove fs/proc/proc_misc.cAlexey Dobriyan
Now that everything was moved to their more or less expected places, apply rm(1). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/vmcore creation to fs/proc/vmcore.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move pagecount stuff to fs/proc/page.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move all /proc/kcore stuff to fs/proc/kcore.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/schedstat boilerplate to kernel/sched_stats.hAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/modules boilerplate to kernel/module.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/diskstats boilerplate to block/genhd.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-23proc: move /proc/zoneinfo boilerplate to mm/vmstat.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org>
2008-10-23proc: move /proc/vmstat boilerplate to mm/vmstat.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org>
2008-10-23proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/buddyinfo boilerplate to mm/vmstat.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/vmallocinfo to mm/vmalloc.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org>
2008-10-23proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.cAlexey Dobriyan
Lose dummy ->write hook in case of SLUB, it's possible now. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
2008-10-23proc: move /proc/slab_allocators boilerplate to mm/slab.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
2008-10-23proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/stat to fs/proc/stat.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move rest of /proc/partitions code to block/genhd.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-23proc: move /proc/cpuinfo code to fs/proc/cpuinfo.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/devices code to fs/proc/devices.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move rest of /proc/locks to fs/locks.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/kmsg creation to fs/proc/kmsg.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: remove remnants of ->read_proc in proc_misc.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/execdomains to kernel/exec_domain.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/cmdline to seq_fileAlexey Dobriyan
and move it to fs/proc/cmdline.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/filesystems to fs/filesystems.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/stram to m68k-specific codeAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: move /proc/hardware to m68k-specific codeAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/version to seq_fileAlexey Dobriyan
and move it to fs/proc/version.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/meminfo to seq_fileAlexey Dobriyan
and move it to fs/proc/meminfo.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/uptime to seq_fileAlexey Dobriyan
and move it to fs/proc/uptime.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: switch /proc/loadavg to seq_fileAlexey Dobriyan
and move it to fs/proc/loadavg.c while I'm at it. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: use WARN() rather than printk+backtraceArjan van de Ven
Use WARN() rather than a printk() + backtrace(); this gives a more standard format message as well as complete information (including line numbers etc) that will be collected by kerneloops.org Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: spread __initAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: proc_init_inodecache() can't failAlexey Dobriyan
kmem_cache creation code will panic, don't return anything. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23proc: fix vma display mismatch between /proc/pid/{maps,smaps}Joe Korty
Commit 4752c369789250eafcd7813e11c8fb689235b0d2 aka "maps4: simplify interdependence of maps and smaps" broke /proc/pid/smaps, causing it to display some vmas twice and other vmas not at all. For example: grep .- /proc/1/smaps >/tmp/smaps; diff /proc/1/maps /tmp/smaps 1 25d24 2 < 7fd7e23aa000-7fd7e23ac000 rw-p 7fd7e23aa000 00:00 0 3 28a28 4 > ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall] The bug has something to do with setting m->version before all the seq_printf's have been performed. show_map was doing this correctly, but show_smap was doing this in the middle of its seq_printf sequence. This patch arranges things so that the setting of m->version in show_smap is also done at the end of its seq_printf sequence. Testing: in addition to the above grep test, for each process I summed up the 'Rss' fields of /proc/pid/smaps and compared that to the 'VmRSS' field of /proc/pid/status. All matched except for Xorg (which has a /dev/mem mapping which Rss accounts for but VmRSS does not). This result gives us some confidence that neither /proc/pid/maps nor /proc/pid/smaps are any longer skipping or double-counting vmas. Signed-off-by: Joe Korty <joe.korty@ccur.com> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2008-10-23[PATCH] fs: add a sanity check in d_freeArjan van de Ven
Hi Al, remember that debug session we did at KS? You suggested this patch back then.... From 7751eaf30474b8cbfaea64795805a17eab05ac53 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven <arjan@linux.intel.com> Date: Tue, 16 Sep 2008 16:51:17 -0700 Subject: [PATCH] fs: add a sanity check in d_free we're seeing some corruption in the dentry->d_alias list that appears like a free of an entry still on the list; this patch adds a WARN_ON() to catch this scenario, as suggested by Al Viro Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
2008-10-23[patch] vfs: make security_inode_setattr() calling consistentMiklos Szeredi
Call security_inode_setattr() consistetly before inode_change_ok(). It doesn't make sense to try to "optimize" the i_op->setattr == NULL case, as most filesystem do define their own setattr function. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2008-10-23[patch 1/3] FS_MBCACHE: don't needlessly make it built-inAdrian Bunk
Assume you have: - one or more of ext2/3/4 statically built into your kernel - none of these with extended attributes enabled and - want to add onother one of ext2/3/4 modular and with extended attributes enabled then you currently have to reboot to use it since this results in CONFIG_FS_MBCACHE=y. That's not a common issue, but I just ran into it and since there's no reason to get a built-in mbcache in this case this patch fixes it. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Andreas Gruenbacher <agruen@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2008-10-23[PATCH] move executable checking into ->permission()Miklos Szeredi
For execute permission on a regular files we need to check if file has any execute bits at all, regardless of capabilites. This check is normally performed by generic_permission() but was also added to the case when the filesystem defines its own ->permission() method. In the latter case the filesystem should be responsible for performing this check. Move the check from inode_permission() inside filesystems which are not calling generic_permission(). Create a helper function execute_ok() that returns true if the inode is a directory or if any execute bits are present in i_mode. Also fix up the following code: - coda control file is never executable - sysctl files are never executable - hfs_permission seems broken on MAY_EXEC, remove - hfsplus_permission is eqivalent to generic_permission(), remove Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
2008-10-23[PATCH] fs/dcache.c: update comment of d_validate()Qinghuang Feng
Parameters @hash and @len have been removed since 2.4.3, now just to delete them. Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com>
2008-10-23[RFC PATCH] touch_mnt_namespace when the mount flags changeDan Williams
Daemons that need to be launched while the rootfs is read-only can now poll /proc/mounts to be notified when their O_RDWR requests may no longer end in EROFS. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-10-23[PATCH] reiserfs: add missing llseek methodChristoph Hellwig
Reiserfs currently doesn't set a llseek method for regular files, which means it will fall back to default_llseek. This means no one can seek beyond 2 Gigabytes on reiserfs, and that there's not protection vs the i_size updates from writers. Signed-off-by: Christoph Hellwig <hch@lst.de>
2008-10-23[PATCH] fix ->llseek for more directoriesChristoph Hellwig
With this patch all directory fops instances that have a readdir that doesn't take the BKL are switched to generic_file_llseek. Signed-off-by: Christoph Hellwig <hch@lst.de>
2008-10-23[PATCH vfs-2.6 6/6] vfs: add LOOKUP_RENAME_TARGET intentOGAWA Hirofumi
This adds LOOKUP_RENAME_TARGET intent for lookup of rename destination. LOOKUP_RENAME_TARGET is going to be used like LOOKUP_CREATE. But since the destination of rename() can be existing directory entry, so it has a difference. Although that difference doesn't matter in my usage, this tells it to user of this intent. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2008-10-23[PATCH vfs-2.6 5/6] vfs: remove LOOKUP_PARENT from non LOOKUP_PARENT lookupOGAWA Hirofumi
lookup_hash() with LOOKUP_PARENT is bogus. And this prepares to add new intent on those path. The user of LOOKUP_PARENT intent is nfs only, and it checks whether nd->flags has LOOKUP_CREATE or LOOKUP_OPEN, so the result is same. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2008-10-23[PATCH vfs-2.6 4/6] vfs: remove unnecessary fsnotify_d_instantiate()OGAWA Hirofumi
This calls d_move(), so fsnotify_d_instantiate() is unnecessary like rename path. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2008-10-23[PATCH vfs-2.6 3/6] vfs: add __d_instantiate() helperOGAWA Hirofumi
This adds __d_instantiate() for users which is already taking dcache_lock, and replace with it. The part of d_add_ci() isn't equivalent. But it should be needed fsnotify_d_instantiate() actually, because the path is to add the inode to negative dentry. fsnotify_d_instantiate() should be called after change from negative to positive. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
2008-10-23[PATCH vfs-2.6 2/6] vfs: add d_ancestor()OGAWA Hirofumi
This adds d_ancestor() instead of d_isparent(), then use it. If new_dentry == old_dentry, is_subdir() returns 1, looks strange. "new_dentry == old_dentry" is not subdir obviously. But I'm not checking callers for now, so this keeps current behavior. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
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