- 25 Jul, 2008 40 commits
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Paul Menage authored
This patch changes attach_task_by_pid() to take a u64 rather than a string; as a result it can be called directly as a control groups write_u64 handler, and cgroup_common_file_write() can be removed. Signed-off-by:
Paul Menage <menage@google.com> Cc: Paul Jackson <pj@sgi.com> Cc: Pavel Emelyanov <xemul@openvz.org> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Serge Hallyn <serue@us.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Paul Menage authored
This patch moves the write handler for the cgroups notify_on_release file into a separate handler. This handler requires no cgroups locking since it relies on atomic bitops for synchronization. Signed-off-by:
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Paul Menage authored
This patch contains cleanups suggested by reviewers for the recent write_string() patchset: - pair cgroup_lock_live_group() with cgroup_unlock() in cgroup.c for clarity, rather than directly unlocking cgroup_mutex. - make the return type of cgroup_lock_live_group() a bool - use a #define'd constant for the local buffer size in read/write functions Signed-off-by:
Serge Hallyn <serue@us.ibm.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by:
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Paul Menage authored
Adds cgroup_release_agent_write() and cgroup_release_agent_show() methods to handle writing/reading the path to a cgroup hierarchy's release agent. As a result, cgroup_common_file_read() is now unnecessary. As part of the change, a previously-tolerated race in cgroup_release_agent() is avoided by copying the current release_agent_path prior to calling call_usermode_helper(). Signed-off-by:
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Paul Menage authored
This patch adds a write_string() method for cgroups control files. The semantics are that a buffer is copied from userspace to kernelspace and the handler function invoked on that buffer. The buffer is guaranteed to be nul-terminated, and no longer than max_write_len (defaulting to 64 bytes if unspecified). Later patches will convert existing raw file write handlers in control group subsystems to use this method. Signed-off-by:
Balbir Singh <balbir@in.ibm.com> Acked-by:
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Paul Menage authored
This patch removes some extraneous spaces from method declarations in struct cftype, to fit in with conventional kernel style. Signed-off-by:
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Li Zefan authored
- need_forkexit_callback will be read only after system boot. - use_task_css_set_links will be read only after it's set. And these 2 variables are checked when a new process is forked. Signed-off-by:
Li Zefan <lizf@cn.fujitsu.com> Acked-by:
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by:
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KOSAKI Motohiro authored
```----------------------- while() { list_entry(); ... } ``` ----------------------- is equivalent to following code. -------------------------- list_for_each_entry(){ ... } -------------------------- later can review easily more. this patch is just clean up. it doesn't have any behavor change. Signed-off-by: -
Pavel Emelyanov authored
Ignoring their return values may result in counter underflow in the future - when the value charged will be uncharged (or in "leaks" - when the value is not uncharged). This also prevents from using charging routines to decrement the counter value (i.e. uncharge it) ;) (Current code works OK with res_counter, however :) ) Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Cc: Paul Menage <menage@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by:
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Li Zefan authored
The function does not modify anything (except the temporary css template), so it's sufficient to hold read lock. Signed-off-by:
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Mike Frysinger authored
Having trailing entities in a revision numer seems pretty pointless to me. More so, it's causing me pains, so just drop them since no other guide is doing this. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Acked-by:
Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by:
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Jan Kara authored
Sometimes it may be useful for userspace to know (e.g. for some hosting guys) that some user stopped exceeding his hardlimit or softlimit in quotas. Implement sending of such events to userspace via quota netlink protocol so that they don't have to poll for such events. Based on idea and initial implementation by Vladislav Bogdanov. Cc: Vladislav Bogdanov <slava@nsys.by> Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
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Jan Kara authored
Signed-off-by:
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Jan Kara authored
Move declarations of some macros, which should be in fact functions to quotaops.h. This way they can be later converted to inline functions because we can now use declarations from quota.h. Also add necessary includes of quotaops.h to a few files. [akpm@linux-foundation.org: fix JFS build] [akpm@linux-foundation.org: fix UFS build] [vegard.nossum@gmail.com: fix QUOTA=n build] Signed-off-by:
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Jan Kara authored
Make loop in sync_dquots() checking whether there's something to write more readable, remove useless variable and macro info_any_dirty() which is used only in this place. Signed-off-by:
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Jan Kara authored
Cleanup quotaops.h: Rename functions from uppercase to lowercase (and define backward compatibility macros), move larger functions to dquot.c and make them non-inline. Signed-off-by:
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Jan Kara authored
When quota structure is going to be dropped and it is dirty, quota code tries to write it. If the write fails for some reason (e. g. transaction cannot be started because the journal is aborted), we try writing again and again and again... Fix the problem by clearing the dirty bit even if the write failed. (akpm: for 2.6.27, 2.6.26.x and 2.6.25.x) Signed-off-by:
dingdinghua <dingdinghua85@gmail.com> Cc: <stable@kernel.org> Signed-off-by:
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Joe Peterson authored
Signed-off-by:
Joe Peterson <joe@skyrush.com> Acked-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
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Joe Peterson authored
Provide a new mount option ("tz=UTC") for DOS (vfat/msdos) filesystems, allowing timestamps to be in coordinated universal time (UTC) rather than local time in applications where doing this is advantageous. In particular, portable devices that use fat/vfat (such as digital cameras) can benefit from using UTC in their internal clocks, thus avoiding daylight saving time errors and general time ambiguity issues. The user of the device does not have to worry about changing the time when moving from place or when daylight saving changes. The new mount option, when set, disables the counter-adjustment that Linux currently makes to FAT timestamp info in anticipation of the normal userspace time zone correction. When used in this new mode, all daylight saving time and time zone handling is done in userspace as is normal for many other filesystems (like ext3). The default mode, which remains unchanged, is still appropriate when mounting volumes written in Windows (because of its use of local time). I originally based this patch on one submitted last year by Paul Collins, but I updated it to work with current source and changed variable/option naming. Ogawa Hirofumi (who maintains these filesystems) and I discussed this patch at length on lkml, and he suggested using the option name in the attached version of the patch. Barry Bouwsma pointed out a good addition to the patch as well. Signed-off-by:Paul Collins <paul@ondioline.org> Acked-by:
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Adrian Bunk authored
Remove some unused #include <linux/dirent.h>'s. Signed-off-by:
Adrian Bunk <bunk@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Adrian Bunk authored
The kernel struct dirent{,64} were different from the ones in userspace. Even worse, we exported the kernel ones to userspace. But after the fat usages are fixed we can remove the conflicting kernel versions. Reviewed-by:H. Peter Anvin <hpa@kernel.org> Signed-off-by:
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Rene Scharfe authored
It has been impossible to set the option 'atari' of the MSDOS filesystem for several years. Since nobody seems to have missed it, let's remove its remains. Signed-off-by:
Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Acked-by:
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OGAWA Hirofumi authored
This removes unnecessary parsing for directory entries. If short_only, we don't need to parse longname. And if !both and it found the longname, we don't need shortname. Signed-off-by:
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OGAWA Hirofumi authored
This uses uses stack for shortname, and uses __getname() for longname in fat_search_long() and __fat_readdir(). By this, it removes unneeded __getname() for shortname. Signed-off-by:
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OGAWA Hirofumi authored
This is no logic changes, just cleans fs/fat/dir.c up. Signed-off-by:
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Adrian Bunk authored
struct __fat_dirent is what was formerly the kernel struct dirent (that was different from the userspace struct dirent). Converting all fat users to struct __fat_dirent will allow us to get rid of the conflicting struct dirent definition. Signed-off-by:
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OGAWA Hirofumi authored
"struct dirent" is a kernel type here, but is a **different type** in userspace! This means both the structure and the IOCTL number is wrong! So, this adds new "struct __fat_dirent" to generate correct IOCTL number. And kernel stuff moves to under __KERNEL__. Signed-off-by:
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OGAWA Hirofumi authored
Current parse_options() exits too early. We need to run the code of bottom in this function even if users doesn't specify options. Signed-off-by:
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Shen Feng authored
remove the definitions of macros: XATTR_SECURITY_PREFIX XATTR_TRUSTED_PREFIX XATTR_USER_PREFIX since they are defined in linux/xattr.h Signed-off-by:
Shen Feng <shen@cn.fujitsu.com> Signed-off-by:
Mingming Cao <cmm@us.ibm.com> Signed-off-by:
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Jeff Mahoney authored
j_commit_lock is a semaphore but uses it as if it were a mutex. This patch converts it to a mutex. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Chris Mason <chris.mason@oracle.com> Cc: Edward Shishkin <edward.shishkin@gmail.com> Signed-off-by:
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Jeff Mahoney authored
j_flush_sem is a semaphore but uses it as if it were a mutex. This patch converts it to a mutex. [akpm@linux-foundation.org: fix mutex_trylock retval treatment] Signed-off-by:
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Jeff Mahoney authored
j_lock is a semaphore but uses it as if it were a mutex. This patch converts it to a mutex. Signed-off-by:
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Jan Kara authored
We should not allow user to change quota mount options when quota is just suspended. It would make mount options and internal quota state inconsistent. Also we should not allow user to change quota format when quota is turned on. On the other hand we can just silently ignore when some option is set to the value it already has (some mount versions do this on remount). Finally, we should not discard current quota options if parsing of mount options fails. Cc: <reiserfs-devel@vger.kernel.org> Signed-off-by:
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Jan Kara authored
Cc: <reiserfs-devel@vger.kernel.org> Signed-off-by:
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Jan Kara authored
In journal=data mode, it is not enough to do write_inode_now() as done in vfs_quota_on() to write all data to their final location (which is needed for quota_read to work correctly). Calling journal_end_sync() before calling vfs_quota_on() does it's job because transactions are committed to the journal and data marked as dirty in memory so write_inode_now() writes them to their final locations. Cc: <reiserfs-devel@vger.kernel.org> Signed-off-by:
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Matthias Kaehlcke authored
Apple Extended HFS file system: The semaphore extents lock is used as a mutex. Convert it to the mutex API. Signed-off-by:
Matthias Kaehlcke <matthias@kaehlcke.net> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Matthias Kaehlcke authored
Apple Macintosh file system: The semaphore extens_lock is used as a mutex. Convert it to the mutex API Signed-off-by:
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Matthias Kaehlcke authored
Apple Macintosh file system: The semaphore bitmap_lock is used as a mutex. Convert it to the mutex API Signed-off-by:
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Adrian Bunk authored
While fixing CONFIG_ leakages to the userspace kernel headers I ran into CODA_FS_OLD_API. After five years, are there still people using the old API left? Especially considering that you have to choose at compile time which API to support in the kernel (and distributions tend to offer the new API for some time). Jan: "The old API can definitely go. Around the time the new interface went in there were some non-Coda userspace file system implementations that took a while longer to convert to the new API, but by now they all switched to the new interface or in some cases to a FUSE-based solution." Signed-off-by:Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by:
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Adam Greenblatt authored
Some iso9660 images contain files with rockridge data that is either incorrect or incompletely parsed. Prior to commit f2966632 ("[PATCH] rock: handle directory overflows") (included with kernel 2.6.13) the kernel ignored the rockridge data for these files, while still allowing the files to be accessed under their non-rockridge names. That commit inadvertently changed things so that files with invalid rockridge data could not be accessed at all. (I ran across the problem when comparing some old CDs with hard disk copies I had made long ago under kernel 2.4: a few of the files on the hard disk copies were no longer visible on the CDs.) This change reverts to the pre-2.6.13 behavior. Signed-off-by:
Adam Greenblatt <adam.greenblatt@gmail.com> Reviewed-by:
Pekka Enberg <penberg@cs.helsinki.fi> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by:
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