1. 08 Apr, 2014 2 commits
  2. 25 Oct, 2013 1 commit
  3. 01 Jun, 2012 1 commit
    • Josef Bacik's avatar
      fs: introduce inode operation ->update_time · c3b2da31
      Josef Bacik authored
      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: default avatarJosef Bacik <josef@redhat.com>
      c3b2da31
  4. 28 Mar, 2012 1 commit
  5. 21 Jul, 2011 1 commit
    • Josef Bacik's avatar
      fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers · 02c24a82
      Josef Bacik authored
      Btrfs needs to be able to control how filemap_write_and_wait_range() is called
      in fsync to make it less of a painful operation, so push down taking i_mutex and
      the calling of filemap_write_and_wait() down into the ->fsync() handlers.  Some
      file systems can drop taking the i_mutex altogether it seems, like ext3 and
      ocfs2.  For correctness sake I just pushed everything down in all cases to make
      sure that we keep the current behavior the same for everybody, and then each
      individual fs maintainer can make up their mind about what to do from there.
      Thanks,
      Acked-by: default avatarJan Kara <jack@suse.cz>
      Signed-off-by: default avatarJosef Bacik <josef@redhat.com>
      Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
      02c24a82
  6. 13 Jan, 2011 1 commit
  7. 17 Nov, 2010 1 commit
  8. 04 Oct, 2010 1 commit
    • Petr Vandrovec's avatar
      BKL: Remove BKL from ncpfs · 2e54eb96
      Petr Vandrovec authored
      Dozen of changes in ncpfs to provide some locking other than BKL.
      
      In readdir cache unlock and mark complete first page as last operation,
      so it can be used for synchronization, as code intended.
      
      When updating dentry name on case insensitive filesystems do at least
      some basic locking...
      
      Hold i_mutex when updating inode fields.
      
      Push some ncp_conn_is_valid down to ncp_request.  Connection can become
      invalid at any moment, and fewer error code paths to test the better.
      
      Use i_size_{read,write} to modify file size.
      
      Set inode's backing_dev_info as ncpfs has its own special bdi.
      
      In ioctl unbreak ioctls invoked on filesystem mounted 'ro' - tests are
      for inode writeable or owner match, but were turned to filesystem
      writeable and inode writeable or owner match.  Also collect all permission
      checks in single place.
      
      Add some locking, and remove comments saying that it would be cool to
      add some locks to the code.
      
      Constify some pointers.
      Signed-off-by: default avatarPetr Vandrovec <petr@vandrovec.name>
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      2e54eb96
  9. 28 May, 2010 1 commit
  10. 17 May, 2010 1 commit
  11. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  12. 02 Jul, 2008 1 commit
    • Andi Kleen's avatar
      Remove BKL from remote_llseek v2 · 9465efc9
      Andi Kleen authored
      - Replace remote_llseek with generic_file_llseek_unlocked (to force compilation
      failures in all users)
      - Change all users to either use generic_file_llseek_unlocked directly or
      take the BKL around. I changed the file systems who don't use the BKL
      for anything (CIFS, GFS) to call it directly. NCPFS and SMBFS and NFS
      take the BKL, but explicitely in their own source now.
      
      I moved them all over in a single patch to avoid unbisectable sections.
      
      Open problem: 32bit kernels can corrupt fpos because its modification
      is not atomic, but they can do that anyways because there's other paths who
      modify it without BKL.
      
      Do we need a special lock for the pos/f_version = 0 checks?
      
      Trond says the NFS BKL is likely not needed, but keep it for now
      until his full audit.
      
      v2: Use generic_file_llseek_unlocked instead of remote_llseek_unlocked
          and factor duplicated code (suggested by hch)
      
      Cc: Trond.Myklebust@netapp.com
      Cc: swhiteho@redhat.com
      Cc: sfrench@samba.org
      Cc: vandrove@vc.cvut.cz
      Signed-off-by: default avatarAndi Kleen <ak@suse.de>
      Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
      Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
      9465efc9
  13. 16 Jul, 2007 1 commit
  14. 21 May, 2007 1 commit
    • Alexey Dobriyan's avatar
      Detach sched.h from mm.h · e8edc6e0
      Alexey Dobriyan authored
      First thing mm.h does is including sched.h solely for can_do_mlock() inline
      function which has "current" dereference inside. By dealing with can_do_mlock()
      mm.h can be detached from sched.h which is good. See below, why.
      
      This patch
      a) removes unconditional inclusion of sched.h from mm.h
      b) makes can_do_mlock() normal function in mm/mlock.c
      c) exports can_do_mlock() to not break compilation
      d) adds sched.h inclusions back to files that were getting it indirectly.
      e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
         getting them indirectly
      
      Net result is:
      a) mm.h users would get less code to open, read, preprocess, parse, ... if
         they don't need sched.h
      b) sched.h stops being dependency for significant number of files:
         on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
         after patch it's only 3744 (-8.3%).
      
      Cross-compile tested on
      
      	all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
      	alpha alpha-up
      	arm
      	i386 i386-up i386-defconfig i386-allnoconfig
      	ia64 ia64-up
      	m68k
      	mips
      	parisc parisc-up
      	powerpc powerpc-up
      	s390 s390-up
      	sparc sparc-up
      	sparc64 sparc64-up
      	um-x86_64
      	x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig
      
      as well as my two usual configs.
      Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e8edc6e0
  15. 08 May, 2007 1 commit
  16. 12 Feb, 2007 1 commit
  17. 08 Dec, 2006 1 commit
  18. 01 Oct, 2006 1 commit
  19. 28 Mar, 2006 1 commit
  20. 23 Mar, 2006 1 commit
  21. 10 Jan, 2006 1 commit
  22. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4