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  1. 24 2月, 2011 2 次提交
  3. 23 2月, 2011 3 次提交
  5. 21 2月, 2011 1 次提交
  7. 23 2月, 2011 6 次提交
  9. 22 2月, 2011 3 次提交
  11. 21 2月, 2011 1 次提交
    • T
      ocfs2: Little refactoring against ocfs2_iget. · 6218b90e
      由 Tao Ma 提交于 
      ocfs2_iget is used to get/create inode. Only iget5_locked
will give us an inode = NULL. So move this check ahead of
ocfs2_read_locked_inode so that we don't need to check
inode before we read and unlock inode. This is also helpful
for trace event(see the next patch).
Signed-off-by: NTao Ma <boyu.mt@taobao.com>
      6218b90e
  13. 22 2月, 2011 1 次提交
  15. 21 2月, 2011 1 次提交
  17. 22 2月, 2011 8 次提交
  19. 21 2月, 2011 1 次提交
  21. 07 3月, 2011 1 次提交
    • T
      ocfs2: Remove EXIT from masklog. · c1e8d35e
      由 Tao Ma 提交于 
      mlog_exit is used to record the exit status of a function.
But because it is added in so many functions, if we enable it,
the system logs get filled up quickly and cause too much I/O.
So actually no one can open it for a production system or even
for a test.

This patch just try to remove it or change it. So:
1. if all the error paths already use mlog_errno, it is just removed.
   Otherwise, it will be replaced by mlog_errno.
2. if it is used to print some return value, it is replaced with
   mlog(0,...).
mlog_exit_ptr is changed to mlog(0.
All those mlog(0,...) will be replaced with trace events later.
Signed-off-by: NTao Ma <boyu.mt@taobao.com>
      c1e8d35e
  23. 21 2月, 2011 1 次提交
    • T
      ocfs2: Remove ENTRY from masklog. · ef6b689b
      由 Tao Ma 提交于 
      ENTRY is used to record the entry of a function.
But because it is added in so many functions, if we enable it,
the system logs get filled up quickly and cause too much I/O.
So actually no one can open it for a production system or even
for a test.

So for mlog_entry_void, we just remove it.
for mlog_entry(...), we replace it with mlog(0,...), and they
will be replace by trace event later.
Signed-off-by: NTao Ma <boyu.mt@taobao.com>
      ef6b689b
  25. 16 3月, 2011 11 次提交
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 · 422e6c4b
      由 Linus Torvalds 提交于 
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (57 commits)
  tidy the trailing symlinks traversal up
  Turn resolution of trailing symlinks iterative everywhere
  simplify link_path_walk() tail
  Make trailing symlink resolution in path_lookupat() iterative
  update nd->inode in __do_follow_link() instead of after do_follow_link()
  pull handling of one pathname component into a helper
  fs: allow AT_EMPTY_PATH in linkat(), limit that to CAP_DAC_READ_SEARCH
  Allow passing O_PATH descriptors via SCM_RIGHTS datagrams
  readlinkat(), fchownat() and fstatat() with empty relative pathnames
  Allow O_PATH for symlinks
  New kind of open files - "location only".
  ext4: Copy fs UUID to superblock
  ext3: Copy fs UUID to superblock.
  vfs: Export file system uuid via /proc/<pid>/mountinfo
  unistd.h: Add new syscalls numbers to asm-generic
  x86: Add new syscalls for x86_64
  x86: Add new syscalls for x86_32
  fs: Remove i_nlink check from file system link callback
  fs: Don't allow to create hardlink for deleted file
  vfs: Add open by file handle support
  ...
      422e6c4b
    • T
      VFS: Fix the nfs sillyrename regression in kernel 2.6.38 · c83ce989
      由 Trond Myklebust 提交于 
      The new vfs locking scheme introduced in 2.6.38 breaks NFS sillyrename
because the latter relies on being able to determine the parent
directory of the dentry in the ->iput() callback in order to send the
appropriate unlink rpc call.

Looking at the code that cares about races with dput(), there doesn't
seem to be anything that specifically uses d_parent as a test for
whether or not there is a race:
  - __d_lookup_rcu(), __d_lookup() all test for d_hashed() after d_parent
  - shrink_dcache_for_umount() is safe since nothing else can rearrange
    the dentries in that super block.
  - have_submount(), select_parent() and d_genocide() can test for a
    deletion if we set the DCACHE_DISCONNECTED flag when the dentry
    is removed from the parent's d_subdirs list.
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org (2.6.38, needs commit c826cb7d "dcache.c:
	create helper function for duplicated functionality" )
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c83ce989
    • L
      dcache.c: create helper function for duplicated functionality · c826cb7d
      由 Linus Torvalds 提交于 
      This creates a helper function for he "try to ascend into the parent
directory" case, which was written out in triplicate before.  With all
the locking and subtle sequence number stuff, we really don't want to
duplicate that kind of code.
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      c826cb7d
    • A
      tidy the trailing symlinks traversal up · 574197e0
      由 Al Viro 提交于 
      * pull the handling of current->total_link_count into
__do_follow_link()
* put the common "do ->put_link() if needed and path_put() the link"
  stuff into a helper (put_link(nd, link, cookie))
* rename __do_follow_link() to follow_link(), while we are at it
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      574197e0
    • A
      Turn resolution of trailing symlinks iterative everywhere · b356379a
      由 Al Viro 提交于 
      The last remaining place (resolution of nested symlink) converted
to the loop of the same kind we have in path_lookupat() and
path_openat().

Note that we still *do* have a recursion in pathname resolution;
can't avoid it, really.  However, it's strictly for nested symlinks
now - i.e. ones in the middle of a pathname.

link_path_walk() has lost the tail now - it always walks everything
except the last component.

do_follow_link() renamed to nested_symlink() and moved down.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      b356379a
    • A
      simplify link_path_walk() tail · ce052544
      由 Al Viro 提交于 
      Now that link_path_walk() is called without LOOKUP_PARENT
only from do_follow_link(), we can simplify the checks in
last component handling.  First of all, checking if we'd
arrived to a directory is not needed - the caller will check
it anyway.  And LOOKUP_FOLLOW is guaranteed to be there,
since we only get to that place with nd->depth > 0.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      ce052544
    • A
      Make trailing symlink resolution in path_lookupat() iterative · bd92d7fe
      由 Al Viro 提交于 
      Now the only caller of link_path_walk() that does *not* pass
LOOKUP_PARENT is do_follow_link()
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      bd92d7fe
    • A
      update nd->inode in __do_follow_link() instead of after do_follow_link() · b21041d0
      由 Al Viro 提交于 
      ... and note that we only need to do it for LAST_BIND symlinks
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      b21041d0
    • A
      pull handling of one pathname component into a helper · ce57dfc1
      由 Al Viro 提交于 
      new helper: walk_component().  Handles everything except symlinks;
returns negative on error, 0 on success and 1 on symlinks we decided
to follow.  Drops out of RCU mode on such symlinks.

link_path_walk() and do_last() switched to using that.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
      ce57dfc1
    • A
      fs: allow AT_EMPTY_PATH in linkat(), limit that to CAP_DAC_READ_SEARCH · 11a7b371
      由 Aneesh Kumar K.V 提交于 
      We don't want to allow creation of private hardlinks by different application
using the fd passed to them via SCM_RIGHTS. So limit the null relative name
usage in linkat syscall to CAP_DAC_READ_SEARCH
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
      11a7b371
    • L
      Merge branch 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm · 76ca0783
      由 Linus Torvalds 提交于 
      * 'for-linus' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm:
  xen: suspend: remove xen_hvm_suspend
  xen: suspend: pull pre/post suspend hooks out into suspend_info
  xen: suspend: move arch specific pre/post suspend hooks into generic hooks
  xen: suspend: refactor non-arch specific pre/post suspend hooks
  xen: suspend: add "arch" to pre/post suspend hooks
  xen: suspend: pass extra hypercall argument via suspend_info struct
  xen: suspend: refactor cancellation flag into a structure
  xen: suspend: use HYPERVISOR_suspend for PVHVM case instead of open coding
  xen: switch to new schedop hypercall by default.
  xen: use new schedop interface for suspend
  xen: do not respond to unknown xenstore control requests
  xen: fix compile issue if XEN is enabled but XEN_PVHVM is disabled
  xen: PV on HVM: support PV spinlocks and IPIs
  xen: make the ballon driver work for hvm domains
  xen-blkfront: handle Xen major numbers other than XENVBD
  xen: do not use xen_info on HVM, set pv_info name to "Xen HVM"
  xen: no need to delay xen_setup_shutdown_event for hvm guests anymore
      76ca0783