Eric Lee / smarc-fsl-linux-kernel

29 Jun, 2006

1 commit

23 Jun, 2006

2 commits

  • 726c33422   [PATCH] VFS: Permit filesystem to perform statfs with a known root dentry ... Browse Code »

    Give the statfs superblock operation a dentry pointer rather than a superblock
    pointer.

    This complements the get_sb() patch. That reduced the significance of
    sb->s_root, allowing NFS to place a fake root there. However, NFS does
    require a dentry to use as a target for the statfs operation. This permits
    the root in the vfsmount to be used instead.

    linux/mount.h has been added where necessary to make allyesconfig build
    successfully.

    Interest has also been expressed for use with the FUSE and XFS filesystems.

    Signed-off-by: David Howells
    Acked-by: Al Viro
    Cc: Nathan Scott
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     
  • 454e2398b   [PATCH] VFS: Permit filesystem to override root dentry on mount ... Browse Code »

    Extend the get_sb() filesystem operation to take an extra argument that
    permits the VFS to pass in the target vfsmount that defines the mountpoint.

    The filesystem is then required to manually set the superblock and root dentry
    pointers. For most filesystems, this should be done with simple_set_mnt()
    which will set the superblock pointer and then set the root dentry to the
    superblock's s_root (as per the old default behaviour).

    The get_sb() op now returns an integer as there's now no need to return the
    superblock pointer.

    This patch permits a superblock to be implicitly shared amongst several mount
    points, such as can be done with NFS to avoid potential inode aliasing. In
    such a case, simple_set_mnt() would not be called, and instead the mnt_root
    and mnt_sb would be set directly.

    The patch also makes the following changes:

    (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount
    pointer argument and return an integer, so most filesystems have to change
    very little.

    (*) If one of the convenience function is not used, then get_sb() should
    normally call simple_set_mnt() to instantiate the vfsmount. This will
    always return 0, and so can be tail-called from get_sb().

    (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the
    dcache upon superblock destruction rather than shrink_dcache_anon().

    This is required because the superblock may now have multiple trees that
    aren't actually bound to s_root, but that still need to be cleaned up. The
    currently called functions assume that the whole tree is rooted at s_root,
    and that anonymous dentries are not the roots of trees which results in
    dentries being left unculled.

    However, with the way NFS superblock sharing are currently set to be
    implemented, these assumptions are violated: the root of the filesystem is
    simply a dummy dentry and inode (the real inode for '/' may well be
    inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries
    with child trees.

    [*] Anonymous until discovered from another tree.

    (*) The documentation has been adjusted, including the additional bit of
    changing ext2_* into foo_* in the documentation.

    [akpm@osdl.org: convert ipath_fs, do other stuff]
    Signed-off-by: David Howells
    Acked-by: Al Viro
    Cc: Nathan Scott
    Cc: Roland Dreier
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     

29 Mar, 2006

1 commit

  • 4b6f5d20b   [PATCH] Make most file operations structs in fs/ const ... Browse Code »

    This is a conversion to make the various file_operations structs in fs/
    const. Basically a regexp job, with a few manual fixups

    The goal is both to increase correctness (harder to accidentally write to
    shared datastructures) and reducing the false sharing of cachelines with
    things that get dirty in .data (while .rodata is nicely read only and thus
    cache clean)

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     

28 Mar, 2006

1 commit

  • 86c79cbce   [PATCH] uml: fix hostfs stack corruption ... Browse Code »

    Noted by Oleg Drokin:
    We initialized an extra slot of struct kstatfs.spare, sometimes
    causing stack corruption.

    Signed-off-by: Jeff Dike
    Cc: Paolo 'Blaisorblade' Giarrusso
    Cc: Oleg Drokin
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

30 Dec, 2005

2 commits

09 Nov, 2005

1 commit

  • 733482e44   [PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reason ... Browse Code »

    This patch removes almost all inclusions of linux/version.h. The 3
    #defines are unused in most of the touched files.

    A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is
    unfortunatly in linux/version.h.

    There are also lots of #ifdef for long obsolete kernels, this was not
    touched. In a few places, the linux/version.h include was move to where
    the LINUX_VERSION_CODE was used.

    quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'`

    search pattern:
    /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h

    Signed-off-by: Olaf Hering
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Olaf Hering
     

07 Nov, 2005

1 commit

  • f99d49adf   [PATCH] kfree cleanup: fs ... Browse Code »

    This is the fs/ part of the big kfree cleanup patch.

    Remove pointless checks for NULL prior to calling kfree() in fs/.

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     

01 Oct, 2005

1 commit

  • daa35edc0   [PATCH] uml: remove empty hostfs_truncate method ... Browse Code »

    Calling truncate() on hostfs spits a kernel warning "Something isn't
    implemented here", but it still works fine.

    Indeed, hostfs i_op->truncate doesn't do anything. But hostfs_setattr() ->
    set_attr() correctly detects ATTR_SIZE and calls truncate() on the host. So
    we should be safe (using ftruncate() may be better, in case the file is
    unlinked on the host, but we aren't sure to have the file open for writing,
    and reopening it would cause the same races; plus nobody should expect UML to
    be so careful).

    So, the warning is wrong, because the current implementation is working. Al,
    am I correct, and can the warning be therefore dropped?

    CC: Al Viro
    Signed-off-by: Paolo 'Blaisorblade' Giarrusso
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paolo 'Blaisorblade' Giarrusso
     

10 Sep, 2005

1 commit

  • fef266580   [PATCH] update filesystems for new delete_inode behavior ... Browse Code »

    Update the file systems in fs/ implementing a delete_inode() callback to
    call truncate_inode_pages(). One implementation note: In developing this
    patch I put the calls to truncate_inode_pages() at the very top of those
    filesystems delete_inode() callbacks in order to retain the previous
    behavior. I'm guessing that some of those could probably be optimized.

    Signed-off-by: Mark Fasheh
    Acked-by: Christoph Hellwig
    Signed-off-by: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Mark Fasheh
     

08 Sep, 2005

1 commit

29 Jul, 2005

1 commit

15 Jul, 2005

1 commit

  • a0d43df93   [PATCH] uml: hostfs: unuse ROOT_DEV ... Browse Code »

    Minimal patch removing uses of ROOT_DEV; next patch unexports it. I've
    opposed this, but I've planned to reintroduce the functionality without using
    ROOT_DEV.

    Signed-off-by: Paolo 'Blaisorblade' Giarrusso
    Cc: Christoph Hellwig
    Cc: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paolo 'Blaisorblade' Giarrusso
     

29 May, 2005

1 commit

  • a2e4b972c   [PATCH] uml: remove 2_5compat.h ... Browse Code »

    Remove old useless header that was used in Ye Olde Times during 2.4->2.5
    porting to abstract differences. It's definitions are no more used anyway, so
    let's finally kill it.

    Signed-off-by: Paolo 'Blaisorblade' Giarrusso
    Signed-off-by: Jeff Dike
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jeff Dike
     

06 May, 2005

1 commit

01 May, 2005

1 commit

  • ffa0aea68   [PATCH] uml - hostfs: avoid buffers ... Browse Code »

    Use this:
    .set_page_dirty = __set_page_dirty_nobuffers,

    We already dropped the inclusion of , and we don't have a
    backing block device for this FS.

    "Without having looked at it, I'm sure that hostfs does not use buffer_heads.
    So setting your ->set_page_dirty a_op to point at __set_page_dirty_nobuffers()
    is a reasonable thing to do - it'll provide a slight speedup."

    This speedup is one less spinlock held and one less conditional branch, which
    isn't bad.

    Signed-off-by: Paolo 'Blaisorblade' Giarrusso
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Paolo 'Blaisorblade' Giarrusso
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    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!

    Linus Torvalds