- 27 Mar, 2006 40 commits
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NeilBrown authored
Signed-off-by:
Neil Brown <neilb@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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NeilBrown authored
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NeilBrown authored
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NeilBrown authored
The C++-like 'template' approach proves to be too ugly and hard to work with. The old 'template' won't go away until all users are updated. Signed-off-by:
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NeilBrown authored
These were an unnecessary wart. Also only have one 'DefineSimpleCache..' instead of two. Signed-off-by:
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NeilBrown authored
Current svc_expkey holds a pointer to the svc_export structure, so updates to that structure have to be in-place, which is a wart on the whole cache infrastruct. So we break that linkage and just do a second lookup. If this became a performance issue, it would be possible to put a direct link back in which was only used conditionally. i.e. when an object is replaced in the cache, we set a flag in the old object. When dereferencing the link from svc_expkey, if the flag is set, we drop the reference and do a fresh lookup. Signed-off-by:
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NeilBrown authored
The 'auth_domain's are simply handles on internal data structures. They do not cache information from user-space, and forcing them into the mold of a 'cache' misrepresents their true nature and causes confusion. Signed-off-by:
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Ian Kent authored
Fix accidental underflow of the atomic counter. Signed-off-by:
Ian Kent <raven@themaw.net> Signed-off-by:
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Ian Kent authored
This functionality is also need for operation of autofs v5 direct mounts. Signed-off-by:
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Dave Jones authored
We have to have a valid sbi here, or we'd have oopsed already. (There's a dereference of sbi->catatonic a few lines above) Coverity #740 Signed-off-by:
Dave Jones <davej@redhat.com> Cc: Ian Kent <raven@themaw.net> Signed-off-by:
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Ian Kent authored
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Ian Kent authored
This patch define a new autofs packet for autofs v5 and updates the waitq.c functions to handle the additional packet type. Signed-off-by:
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Ian Kent authored
This patch adds expire logic for autofs direct mounts. Signed-off-by:
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Ian Kent authored
This patch adds a follow_link inode method for the root of an autofs direct mount trigger. It also adds the corresponding mount options and updates the show_mount method. Signed-off-by:
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Ian Kent authored
In order to be able to trigger a mount using the follow_link inode method the nameidata struct that is passed in needs to have the vfsmount of the autofs trigger not its parent. During a path walk if an autofs trigger is mounted on a dentry, when the follow_link method is called, the nameidata struct contains the vfsmount and mountpoint dentry of the parent mount while the dentry that is passed in is the root of the autofs trigger mount. I believe it is impossible to get the vfsmount of the trigger mount, within the follow_link method, when only the parent vfsmount and the root dentry of the trigger mount are known. This patch updates the nameidata struct on entry to __do_follow_link if it detects that it is out of date. It moves the path_to_nameidata to above __do_follow_link to facilitate calling it from there. The dput_path is moved as well as that seemed sensible. No changes are made to these two functions. Signed-off-by:
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Ian Kent authored
Update autofs4 version. Signed-off-by:
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Ian Kent authored
Change the functions may_umount and may_umount_tree to boolean functions to aid code readability. Signed-off-by:
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Ian Kent authored
Rename the function simple_empty_nolock to __simple_empty in line with kernel naming conventions. Signed-off-by:
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Ian Kent authored
Whitespace and formating changes to waitq code. Signed-off-by:
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Ian Kent authored
Add show_options method to display autofs4 mount options in the proc filesystem. Signed-off-by:
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Ian Kent authored
Remove the update of i_atime from autofs4 in favour of having VFS update it. i_atime is never used for expire in autofs4. Signed-off-by:
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Ian Kent authored
Alter the expire semantics that define how "busyness" is determined. Currently a last_used counter is updated on every revalidate from processes other than the mount owner process group. This patch changes that so that an expire candidate is busy only if it has a reference count greater than the expected minimum, such as when there is an open file or working directory in use. This method is the only way that busyness can be established for direct mounts within the new implementation. For consistency the expire semantic is made the same for all mounts. A side effect of the patch is that mounts which remain mounted unessessarily in the presence of some GUI programs that scan the filesystem should now expire. Signed-off-by:
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Ian Kent authored
Fix the case where an expire returns busy on a tree mount when it is in fact not busy. This case was overlooked when the patch to prevent the expiring away of "scaffolding" directories for tree mounts was applied. The problem arises when a tree of mounts is a member of a map with other keys. The current logic will not expire the tree if any other mount in the map is busy. The solution is to maintain a "minimum" use count for each autofs dentry and compare this to the actual dentry usage count during expire. Signed-off-by:
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Ian Kent authored
Simplify the expire tree traversal code by using a function from namespace.c to calculate the next entry in the top down tree traversals carried out during the expire operation. Signed-off-by:
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Ian Kent authored
Change the names of the boolean functions autofs4_check_mount and autofs4_check_tree to autofs4_mount_busy and autofs4_tree_busy respectively and alters their return codes to suit in order to aid code readabilty. A couple of white space cleanups are included as well. Signed-off-by:
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Ian Kent authored
Addresse a problem where stale dentrys stop mounts from happening. When a mount point directory is pre-created and a non-existent entry within it is requested a dentry ends up being created within the mount point directory which stops future mounts. The problem is solved by ignoring negative, unhashed dentrys in the mount point d_subdirs list. Additionally the apparent cacheing of -ENOENT returns from requests is removed. The test on d_time is a tautology and d_time is not initialised and has an unexpected value. In short it doesn't do what it's meant to. The cacheing of failed requests to the daemon is important and will be followed up later. Signed-off-by:
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Ian Kent authored
Change readdir routines to use the cursor based routines in libfs.c. This removes reliance on old readdir code from 2.4 and should improve efficiency of readdir in autofs4. Signed-off-by:
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Ian Kent authored
Whitespace and formating changes to lookup code. Signed-off-by:
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Jeff Dike authored
Noted by Oleg Drokin: We initialized an extra slot of struct kstatfs.spare, sometimes causing stack corruption. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Oleg Drokin <green@clusterfs.com> Signed-off-by:
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Jeff Dike authored
This fixes a race in the starting of write_sigio_thread. Previously, some of the data needed by the thread was initialized after the clone. If the thread ran immediately, it would see the uninitialized data, including an empty pollfds, which would cause it to hang. We move the data initialization to before the clone, and adjust the error paths and cleanup accordingly. Signed-off-by:
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Jeff Dike authored
Behavior when booting two UMLs with the same umid was broken. The second one would steal the umid. This fixes that, making the second UML take a random umid instead. Signed-off-by:
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Jeff Dike authored
This fixes a process segfault where a signal was being delivered such that a new stack page needed to be allocated to hold the signal frame. This was tripping some logic in the page fault handler which wouldn't allocate the page if the faulting address was more that 32 bytes lower than the current stack pointer. Since a signal frame is greater than 32 bytes, this exercised that case. It's fixed by updating the SP in the pt_regs before starting to copy the signal frame. Since those are the registers that will be copied on to the stack, we have to be careful to put the original SP, not the new one which points to the signal frame, on the stack. Signed-off-by:
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Jeff Dike authored
This adds a 'c' option to the ubd switch which turns off host file locking so that the device can be shared, as with a cluster. There's also some whitespace cleanup while I was in this file. Signed-off-by:
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Jeff Dike authored
This rearranges the OS declarations by moving some declarations into os.h. Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from tty_log.c file under os-Linux dir Signed-off-by:
Gennady Sharapov <Gennady.V.Sharapov@intel.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Bodo Stroesser authored
For security reasons, UML in is_syscall() needs to have access to code in vsyscall-page. The current implementation grants this access by explicitly allowing access to vsyscall in access_ok_skas(). With this change, copy_from_user() may be used to read the code. Ptrace access to vsyscall-page for debugging already was implemented in get_user_pages() by mainline. In i386, copy_from_user can't access vsyscall-page, but returns EFAULT. To make UML behave as i386 does, I changed is_syscall to use access_process_vm(current) to read the code from vsyscall-page. This doesn't hurt security, but simplifies the code and prepares implementation of stub-vmas. Signed-off-by:
Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves sigio_user.c to os-Linux dir Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all startup code from sigio_user.c file under os-Linux dir Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This joins irq_user.c and irq.c files. Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from irq_user.c file under os-Linux dir Signed-off-by:
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