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A few fixes to reduce places where pstore might hang

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a system in the crash path. Plus a new mountpoint
 (/sys/fs/pstore ... makes more sense then /dev/pstore).
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Merge tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux

Pull pstore patches from Tony Luck:
 "A few fixes to reduce places where pstore might hang a system in the
  crash path.  Plus a new mountpoint (/sys/fs/pstore ...  makes more
  sense then /dev/pstore)."

Fix up trivial conflict in drivers/firmware/efivars.c

* tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
  pstore: Create a convenient mount point for pstore
  efi_pstore: Introducing workqueue updating sysfs
  efivars: Disable external interrupt while holding efivars->lock
  efi_pstore: Avoid deadlock in non-blocking paths
  pstore: Avoid deadlock in panic and emergency-restart path
This commit is contained in:
Linus Torvalds 2013-02-21 09:38:18 -08:00
commit 024e4ec185
6 changed files with 191 additions and 59 deletions
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3
include/linux/efi.h
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@ -740,7 +740,8 @@ struct efivars {
* 1) ->list - adds, removals, reads, writes
* 2) ops.[gs]et_variable() calls.
* It must not be held when creating sysfs entries or calling kmalloc.
* ops.get_next_variable() is only called from register_efivars(),
* ops.get_next_variable() is only called from register_efivars()
* or efivar_update_sysfs_entries(),
* which is protected by the BKL, so that path is safe.
*/
spinlock_t lock;