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2012-06-01acpi_video: fix leaking PCI referencesAlan Cox1-2/+3
Signed-off-by: Alan Cox <[email protected]> Acked-by: Matthew Garrett <[email protected]> Signed-off-by: Len Brown <[email protected]>
2012-06-01CIFS: Move get_next_mid to ops structPavel Shilovsky7-95/+103
Reviewed-by: Jeff Layton <[email protected]> Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2012-06-01CIFS: Make accessing is_valid_oplock/dump_detail ops struct field safePavel Shilovsky1-2/+4
Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2012-06-01CIFS: Improve identation in cifs_unlock_rangePavel Shilovsky1-40/+35
Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2012-06-01CIFS: Fix possible wrong memory allocationPavel Shilovsky1-6/+25
when cifs_reconnect sets maxBuf to 0 and we try to calculate a size of memory we need to store locks. Signed-off-by: Pavel Shilovsky <[email protected]> Signed-off-by: Steve French <[email protected]>
2012-06-01Merge branch 'for-linus' of ↵Linus Torvalds148-1618/+1495
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs changes from Al Viro. "A lot of misc stuff. The obvious groups: * Miklos' atomic_open series; kills the damn abuse of ->d_revalidate() by NFS, which was the major stumbling block for all work in that area. * ripping security_file_mmap() and dealing with deadlocks in the area; sanitizing the neighborhood of vm_mmap()/vm_munmap() in general. * ->encode_fh() switched to saner API; insane fake dentry in mm/cleancache.c gone. * assorted annotations in fs (endianness, __user) * parts of Artem's ->s_dirty work (jff2 and reiserfs parts) * ->update_time() work from Josef. * other bits and pieces all over the place. Normally it would've been in two or three pull requests, but signal.git stuff had eaten a lot of time during this cycle ;-/" Fix up trivial conflicts in Documentation/filesystems/vfs.txt (the 'truncate_range' inode method was removed by the VM changes, the VFS update adds an 'update_time()' method), and in fs/btrfs/ulist.[ch] (due to sparse fix added twice, with other changes nearby). * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (95 commits) nfs: don't open in ->d_revalidate vfs: retry last component if opening stale dentry vfs: nameidata_to_filp(): don't throw away file on error vfs: nameidata_to_filp(): inline __dentry_open() vfs: do_dentry_open(): don't put filp vfs: split __dentry_open() vfs: do_last() common post lookup vfs: do_last(): add audit_inode before open vfs: do_last(): only return EISDIR for O_CREAT vfs: do_last(): check LOOKUP_DIRECTORY vfs: do_last(): make ENOENT exit RCU safe vfs: make follow_link check RCU safe vfs: do_last(): use inode variable vfs: do_last(): inline walk_component() vfs: do_last(): make exit RCU safe vfs: split do_lookup() Btrfs: move over to use ->update_time fs: introduce inode operation ->update_time reiserfs: get rid of resierfs_sync_super reiserfs: mark the superblock as dirty a bit later ...
2012-06-01Merge tag 'ext4_for_linus' of ↵Linus Torvalds28-197/+1784
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull Ext4 updates from Theodore Ts'o: "The major new feature added in this update is Darrick J Wong's metadata checksum feature, which adds crc32 checksums to ext4's metadata fields. There is also the usual set of cleanups and bug fixes." * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (44 commits) ext4: hole-punch use truncate_pagecache_range jbd2: use kmem_cache_zalloc wrapper instead of flag ext4: remove mb_groups before tearing down the buddy_cache ext4: add ext4_mb_unload_buddy in the error path ext4: don't trash state flags in EXT4_IOC_SETFLAGS ext4: let getattr report the right blocks in delalloc+bigalloc ext4: add missing save_error_info() to ext4_error() ext4: add debugging trigger for ext4_error() ext4: protect group inode free counting with group lock ext4: use consistent ssize_t type in ext4_file_write() ext4: fix format flag in ext4_ext_binsearch_idx() ext4: cleanup in ext4_discard_allocated_blocks() ext4: return ENOMEM when mounts fail due to lack of memory ext4: remove redundundant "(char *) bh->b_data" casts ext4: disallow hard-linked directory in ext4_lookup ext4: fix potential integer overflow in alloc_flex_gd() ext4: remove needs_recovery in ext4_mb_init() ext4: force ro mount if ext4_setup_super() fails ext4: fix potential NULL dereference in ext4_free_inodes_counts() ext4/jbd2: add metadata checksumming to the list of supported features ...
2012-06-01x86: get rid of calling do_notify_resume() when returning to kernel modeAl Viro2-13/+10
If we end up calling do_notify_resume() with !user_mode(refs), it does nothing (do_signal() explicitly bails out and we can't get there with TIF_NOTIFY_RESUME in such situations). Then we jump to resume_userspace_sig, which rechecks the same thing and bails out to resume_kernel, thus breaking the loop. It's easier and cheaper to check *before* calling do_notify_resume() and bail out to resume_kernel immediately. And kill the check in do_signal()... Note that on amd64 we can't get there with !user_mode() at all - asm glue takes care of that. Acked-and-reviewed-by: Thomas Gleixner <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01blackfin: check __get_user() return valueAl Viro1-16/+14
Signed-off-by: Al Viro <[email protected]>
2012-06-01whack-a-mole with TIF_FREEZEAl Viro1-2/+0
blackfin has reintroduced it, completely unused. Signed-off-by: Al Viro <[email protected]>
2012-06-01FRV: Optimise the system call exit path in entry.S [ver #2]David Howells1-6/+7
Optimise the system call exit path in entry.S by packing some instructions. Suggested-by: Al Viro <[email protected]> Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01FRV: Shrink TIF_WORK_MASK [ver #2]David Howells2-13/+15
Shrink TIF_WORK_MASK so that it will fit in the 12-bit signed immediate operand field of an ANDI instruction. Suggested-by: Al Viro <[email protected]> Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01FRV: Prevent syscall exit tracing and notify_resume at end of kernel exceptionsDavid Howells2-11/+3
Move the test for kernel mode processing from do_signal() into entry.S to also prevent system call exit tracing and userspace resumption notification handling happening when returning from kernel exceptions. Reported-by: Al Viro <[email protected]> Signed-off-by: David Howells <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01new helper: signal_delivered()Al Viro34-83/+47
Does block_sigmask() + tracehook_signal_handler(); called when sigframe has been successfully built. All architectures converted to it; block_sigmask() itself is gone now (merged into this one). I'm still not too happy with the signature, but that's a separate story (IMO we need a structure that would contain signal number + siginfo + k_sigaction, so that get_signal_to_deliver() would fill one, signal_delivered(), handle_signal() and probably setup...frame() - take one). Signed-off-by: Al Viro <[email protected]>
2012-06-01powerpc: get rid of restore_sigmask()Al Viro4-14/+4
... it's just a call of set_current_blocked() now Signed-off-by: Al Viro <[email protected]>
2012-06-01most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from setAl Viro45-141/+17
Only 3 out of 63 do not. Renamed the current variant to __set_current_blocked(), added set_current_blocked() that will exclude unblockable signals, switched open-coded instances to it. Signed-off-by: Al Viro <[email protected]>
2012-06-01set_restore_sigmask() is never called without SIGPENDING (and never should be)Al Viro8-8/+9
Signed-off-by: Al Viro <[email protected]>
2012-06-01TIF_RESTORE_SIGMASK can be set only when TIF_SIGPENDING is setAl Viro13-19/+14
Signed-off-by: Al Viro <[email protected]>
2012-06-01don't call try_to_freeze() from do_signal()Al Viro7-28/+0
get_signal_to_deliver() will handle it itself Signed-off-by: Al Viro <[email protected]>
2012-06-01pull clearing RESTORE_SIGMASK into block_sigmask()Al Viro34-387/+130
Signed-off-by: Al Viro <[email protected]>
2012-06-01sh64: failure to build sigframe != signal without handlerAl Viro1-1/+1
it's actually "send me SIGSEGV"... Signed-off-by: Al Viro <[email protected]>
2012-06-01openrisc: tracehook_signal_handler() is supposed to be called on successAl Viro1-14/+6
... not if sigframe couldn't have been built. Signed-off-by: Al Viro <[email protected]>
2012-06-01new helper: sigmask_to_save()Al Viro31-250/+92
replace boilerplate "should we use ->saved_sigmask or ->blocked?" with calls of obvious inlined helper... Signed-off-by: Al Viro <[email protected]>
2012-06-01new helper: restore_saved_sigmask()Al Viro32-125/+38
first fruits of ..._restore_sigmask() helpers: now we can take boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK and restore the blocked mask from ->saved_mask" into a common helper. Open-coded instances switched... Signed-off-by: Al Viro <[email protected]>
2012-06-01new helpers: {clear,test,test_and_clear}_restore_sigmask()Al Viro8-0/+125
helpers parallel to set_restore_sigmask(), used in the next commits Signed-off-by: Al Viro <[email protected]>
2012-06-01HAVE_RESTORE_SIGMASK is defined on all architectures nowAl Viro5-14/+4
Everyone either defines it in arch thread_info.h or has TIF_RESTORE_SIGMASK and picks default set_restore_sigmask() in linux/thread_info.h. Kill the ifdefs, slap #error in linux/thread_info.h to catch breakage when new ones get merged. Signed-off-by: Al Viro <[email protected]>
2012-06-01dell-laptop: Remove rfkill codeMatthew Garrett1-289/+0
The interface just doesn't work on some machines, and Dell haven't been able to tell us either which machines those are or what we should be doing instead. This would be fine, except it results in userspace ending up confused and general sadness. So let's just rip it out for now. Signed-off-by: Matthew Garrett <[email protected]>
2012-06-01nfs: don't open in ->d_revalidateMiklos Szeredi2-55/+78
NFSv4 can't do reliable opens in d_revalidate, since it cannot know whether a mount needs to be followed or not. It does check d_mountpoint() on the dentry, which can result in a weird error if the VFS found that the mount does not in fact need to be followed, e.g.: # mount --bind /mnt/nfs /mnt/nfs-clone # echo something > /mnt/nfs/tmp/bar # echo x > /tmp/file # mount --bind /tmp/file /mnt/nfs-clone/tmp/bar # cat /mnt/nfs/tmp/bar cat: /mnt/nfs/tmp/bar: Not a directory Which should, by any sane filesystem, result in "something" being printed. So instead do the open in f_op->open() and in the unlikely case that the cached dentry turned out to be invalid, drop the dentry and return EOPENSTALE to let the VFS retry. Signed-off-by: Miklos Szeredi <[email protected]> CC: Trond Myklebust <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: retry last component if opening stale dentryMiklos Szeredi2-2/+36
NFS optimizes away d_revalidates for last component of open. This means that open itself can find the dentry stale. This patch allows the filesystem to return EOPENSTALE and the VFS will retry the lookup on just the last component if possible. If the lookup was done using RCU mode, including the last component, then this is not possible since the parent dentry is lost. In this case fall back to non-RCU lookup. Currently this is not used since NFS will always leave RCU mode. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: nameidata_to_filp(): don't throw away file on errorMiklos Szeredi1-3/+5
If open fails, don't put the file. This allows it to be reused if open needs to be retried. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: nameidata_to_filp(): inline __dentry_open()Miklos Szeredi1-2/+18
Copy __dentry_open() into nameidata_to_filp(). Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_dentry_open(): don't put filpMiklos Szeredi1-1/+2
Move put_filp() out to __dentry_open(), the only caller now. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: split __dentry_open()Miklos Szeredi2-14/+34
Split __dentry_open() into two functions: do_dentry_open() - does most of the actual work, doesn't put file on failure open_check_o_direct() - after a successful open, checks direct_IO method This will allow i_op->atomic_open to do just the file initialization and leave the direct_IO checking to the VFS. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last() common post lookupMiklos Szeredi1-31/+3
Now the post lookup code can be shared between O_CREAT and plain opens since they are essentially the same. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): add audit_inode before openMiklos Szeredi1-0/+1
This allows this code to be shared between O_CREAT and plain opens. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): only return EISDIR for O_CREATMiklos Szeredi1-1/+1
This allows this code to be shared between O_CREAT and plain opens. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): check LOOKUP_DIRECTORYMiklos Szeredi1-0/+3
Check for ENOTDIR before finishing open. This allows this code to be shared between O_CREAT and plain opens. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): make ENOENT exit RCU safeMiklos Szeredi1-2/+4
This will allow this code to be used in RCU mode. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: make follow_link check RCU safeMiklos Szeredi1-2/+10
This will allow this code to be used in RCU mode. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): use inode variableMiklos Szeredi1-3/+5
Use helper variable instead of path->dentry->d_inode before complete_walk(). This will allow this code to be used in RCU mode. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): inline walk_component()Miklos Szeredi1-5/+30
Copy walk_component() into do_lookup(). Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: do_last(): make exit RCU safeMiklos Szeredi1-1/+1
Allow returning from do_last() with LOOKUP_RCU still set on the "out:" and "exit:" labels. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01vfs: split do_lookup()Miklos Szeredi1-14/+45
Split do_lookup() into two functions: lookup_fast() - does cached lookup without i_mutex lookup_slow() - does lookup with i_mutex Both follow managed dentries. The new functions are needed by atomic_open. Signed-off-by: Miklos Szeredi <[email protected]> Signed-off-by: Al Viro <[email protected]>
2012-06-01x86, efi: Add EFI boot stub documentationMatt Fleming2-0/+67
Since we can't expect every user to read the EFI boot stub code it seems prudent to have a couple of paragraphs explaining what it is and how it works. The "initrd=" option in particular is tricky because it only understands absolute EFI-style paths (backslashes as directory separators), and until now this hasn't been documented anywhere. This has tripped up a couple of users. Cc: Matthew Garrett <[email protected]> Cc: Randy Dunlap <[email protected]> Signed-off-by: Matt Fleming <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]>
2012-06-01x86, efi; Add EFI boot stub console supportMatt Fleming2-16/+75
We need a way of printing useful messages to the user, for example when we fail to open an initrd file, instead of just hanging the machine without giving the user any indication of what went wrong. So sprinkle some error messages throughout the EFI boot stub code to make it easier for users to diagnose/report problems. Reported-by: Keshav P R <[email protected]> Cc: Matthew Garrett <[email protected]> Signed-off-by: Matt Fleming <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]>
2012-06-01x86, efi: Only close open files in error pathMatt Fleming1-1/+1
The loop at the 'close_handles' label in handle_ramdisks() should be using 'i', which represents the number of initrd files that were successfully opened, not 'nr_initrds' which is the number of initrd= arguments passed on the command line. Currently, if we execute the loop to close all file handles and we failed to open any initrds we'll try to call the close function on a garbage pointer, causing the machine to hang. Cc: Matthew Garrett <[email protected]> Signed-off-by: Matt Fleming <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]>
2012-06-01Btrfs: move over to use ->update_timeJosef Bacik3-41/+15
Btrfs had been doing it's own file_update_time so we could catch ENOSPC properly, so just update our btrfs_update_time to work with the new stuff and then we'll be fancy later. Thanks, Signed-off-by: Josef Bacik <[email protected]>
2012-06-01fs: introduce inode operation ->update_timeJosef Bacik12-29/+86
Btrfs has to make sure we have space to allocate new blocks in order to modify the inode, so updating time can fail. We've gotten around this by having our own file_update_time but this is kind of a pain, and Christoph has indicated he would like to make xfs do something different with atime updates. So introduce ->update_time, where we will deal with i_version an a/m/c time updates and indicate which changes need to be made. The normal version just does what it has always done, updates the time and marks the inode dirty, and then filesystems can choose to do something different. I've gone through all of the users of file_update_time and made them check for errors with the exception of the fault code since it's complicated and I wasn't quite sure what to do there, also Jan is going to be pushing the file time updates into page_mkwrite for those who have it so that should satisfy btrfs and make it not a big deal to check the file_update_time() return code in the generic fault path. Thanks, Signed-off-by: Josef Bacik <[email protected]>
2012-06-01drm/edid: Make the header fixup threshold tunableAdam Jackson1-2/+9
6 bytes seems to be a reasonable default so far, but for the desperate it's worth exposing this. [airlied: change include to module.h for this] Bugzilla: https://bugzilla.redhat.com/582559 Signed-off-by: Adam Jackson <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
2012-06-01drm/radeon: fix regression in UMS CS ioctlAlex Deucher1-14/+17
radeon_cs_parser_init is called by both the legacy UMS CS ioctl and the KMS CS ioctl. Protect KMS specific pieces of the code by checking that rdev is not NULL. Reported-by: Michael Burian <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Reviewed-by: Jerome Glisse <[email protected]> Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
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