Eric Lee / smarc-fsl-linux-kernel

01 Aug, 2017

1 commit

  • 3b49c9a1e   fs: convert a pile of fsync routines to errseq_t based reporting ... Browse Code »

    This patch converts most of the in-kernel filesystems that do writeback
    out of the pagecache to report errors using the errseq_t-based
    infrastructure that was recently added. This allows them to report
    errors once for each open file description.

    Most filesystems have a fairly straightforward fsync operation. They
    call filemap_write_and_wait_range to write back all of the data and
    wait on it, and then (sometimes) sync out the metadata.

    For those filesystems this is a straightforward conversion from calling
    filemap_write_and_wait_range in their fsync operation to calling
    file_write_and_wait_range.

    Acked-by: Jan Kara
    Acked-by: Dave Kleikamp
    Signed-off-by: Jeff Layton

    Jeff Layton
     

02 Mar, 2017

1 commit

11 Oct, 2016

2 commits

  • 101105b17   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull more vfs updates from Al Viro:
    ">rename2() work from Miklos + current_time() from Deepa"

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    fs: Replace current_fs_time() with current_time()
    fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps
    fs: Replace CURRENT_TIME with current_time() for inode timestamps
    fs: proc: Delete inode time initializations in proc_alloc_inode()
    vfs: Add current_time() api
    vfs: add note about i_op->rename changes to porting
    fs: rename "rename2" i_op to "rename"
    vfs: remove unused i_op->rename
    fs: make remaining filesystems use .rename2
    libfs: support RENAME_NOREPLACE in simple_rename()
    fs: support RENAME_NOREPLACE for local filesystems
    ncpfs: fix unused variable warning

    Linus Torvalds
     
  • 97d211670   Merge branch 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull vfs xattr updates from Al Viro:
    "xattr stuff from Andreas

    This completes the switch to xattr_handler ->get()/->set() from
    ->getxattr/->setxattr/->removexattr"

    * 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    vfs: Remove {get,set,remove}xattr inode operations
    xattr: Stop calling {get,set,remove}xattr inode operations
    vfs: Check for the IOP_XATTR flag in listxattr
    xattr: Add __vfs_{get,set,remove}xattr helpers
    libfs: Use IOP_XATTR flag for empty directory handling
    vfs: Use IOP_XATTR flag for bad-inode handling
    vfs: Add IOP_XATTR inode operations flag
    vfs: Move xattr_resolve_name to the front of fs/xattr.c
    ecryptfs: Switch to generic xattr handlers
    sockfs: Get rid of getxattr iop
    sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names
    kernfs: Switch to generic xattr handlers
    hfs: Switch to generic xattr handlers
    jffs2: Remove jffs2_{get,set,remove}xattr macros
    xattr: Remove unnecessary NULL attribute name check

    Linus Torvalds
     

08 Oct, 2016

1 commit

07 Oct, 2016

1 commit

28 Sep, 2016

1 commit

  • 02027d42c   fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps ... Browse Code »

    CURRENT_TIME_SEC is not y2038 safe. current_time() will
    be transitioned to use 64 bit time along with vfs in a
    separate patch.
    There is no plan to transistion CURRENT_TIME_SEC to use
    y2038 safe time interfaces.

    current_time() will also be extended to use superblock
    range checking parameters when range checking is introduced.

    This works because alloc_super() fills in the the s_time_gran
    in super block to NSEC_PER_SEC.

    Signed-off-by: Deepa Dinamani
    Acked-by: Jan Kara
    Signed-off-by: Al Viro

    Deepa Dinamani
     

22 Sep, 2016

1 commit

  • 31051c85b   fs: Give dentry to inode_change_ok() instead of inode ... Browse Code »

    inode_change_ok() will be resposible for clearing capabilities and IMA
    extended attributes and as such will need dentry. Give it as an argument
    to inode_change_ok() instead of an inode. Also rename inode_change_ok()
    to setattr_prepare() to better relect that it does also some
    modifications in addition to checks.

    Reviewed-by: Christoph Hellwig
    Signed-off-by: Jan Kara

    Jan Kara
     

06 Aug, 2016

1 commit

  • 835c92d43   Merge branch 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull qstr constification updates from Al Viro:
    "Fairly self-contained bunch - surprising lot of places passes struct
    qstr * as an argument when const struct qstr * would suffice; it
    complicates analysis for no good reason.

    I'd prefer to feed that separately from the assorted fixes (those are
    in #for-linus and with somewhat trickier topology)"

    * 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    qstr: constify instances in adfs
    qstr: constify instances in lustre
    qstr: constify instances in f2fs
    qstr: constify instances in ext2
    qstr: constify instances in vfat
    qstr: constify instances in procfs
    qstr: constify instances in fuse
    qstr constify instances in fs/dcache.c
    qstr: constify instances in nfs
    qstr: constify instances in ocfs2
    qstr: constify instances in autofs4
    qstr: constify instances in hfs
    qstr: constify instances in hfsplus
    qstr: constify instances in logfs
    qstr: constify dentry_init_security

    Linus Torvalds
     

21 Jul, 2016

1 commit

30 May, 2016

1 commit

18 May, 2016

1 commit

  • c2e7b2070   Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull vfs cleanups from Al Viro:
    "More cleanups from Christoph"

    * 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    nfsd: use RWF_SYNC
    fs: add RWF_DSYNC aand RWF_SYNC
    ceph: use generic_write_sync
    fs: simplify the generic_write_sync prototype
    fs: add IOCB_SYNC and IOCB_DSYNC
    direct-io: remove the offset argument to dio_complete
    direct-io: eliminate the offset argument to ->direct_IO
    xfs: eliminate the pos variable in xfs_file_dio_aio_write
    filemap: remove the pos argument to generic_file_direct_write
    filemap: remove pos variables in generic_file_read_iter

    Linus Torvalds
     

13 May, 2016

1 commit

02 May, 2016

1 commit

05 Apr, 2016

1 commit

  • 09cbfeaf1   mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros ... Browse Code »

    PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
    ago with promise that one day it will be possible to implement page
    cache with bigger chunks than PAGE_SIZE.

    This promise never materialized. And unlikely will.

    We have many places where PAGE_CACHE_SIZE assumed to be equal to
    PAGE_SIZE. And it's constant source of confusion on whether
    PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
    especially on the border between fs and mm.

    Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
    breakage to be doable.

    Let's stop pretending that pages in page cache are special. They are
    not.

    The changes are pretty straight-forward:

    - << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

    - >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

    - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};

    - page_cache_get() -> get_page();

    - page_cache_release() -> put_page();

    This patch contains automated changes generated with coccinelle using
    script below. For some reason, coccinelle doesn't patch header files.
    I've called spatch for them manually.

    The only adjustment after coccinelle is revert of changes to
    PAGE_CAHCE_ALIGN definition: we are going to drop it later.

    There are few places in the code where coccinelle didn't reach. I'll
    fix them manually in a separate patch. Comments and documentation also
    will be addressed with the separate patch.

    virtual patch

    @@
    expression E;
    @@
    - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
    + E

    @@
    expression E;
    @@
    - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
    + E

    @@
    @@
    - PAGE_CACHE_SHIFT
    + PAGE_SHIFT

    @@
    @@
    - PAGE_CACHE_SIZE
    + PAGE_SIZE

    @@
    @@
    - PAGE_CACHE_MASK
    + PAGE_MASK

    @@
    expression E;
    @@
    - PAGE_CACHE_ALIGN(E)
    + PAGE_ALIGN(E)

    @@
    expression E;
    @@
    - page_cache_get(E)
    + get_page(E)

    @@
    expression E;
    @@
    - page_cache_release(E)
    + put_page(E)

    Signed-off-by: Kirill A. Shutemov
    Acked-by: Michal Hocko
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

23 Jan, 2016

1 commit

  • 5955102c9   wrappers for ->i_mutex access ... Browse Code »

    parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
    inode_foo(inode) being mutex_foo(&inode->i_mutex).

    Please, use those for access to ->i_mutex; over the coming cycle
    ->i_mutex will become rwsem, with ->lookup() done with it held
    only shared.

    Signed-off-by: Al Viro

    Al Viro
     

16 Apr, 2015

1 commit

12 Apr, 2015

4 commits

26 Mar, 2015

1 commit

07 May, 2014

5 commits

04 Apr, 2014

1 commit

  • 91b0abe36   mm + fs: store shadow entries in page cache ... Browse Code »

    Reclaim will be leaving shadow entries in the page cache radix tree upon
    evicting the real page. As those pages are found from the LRU, an
    iput() can lead to the inode being freed concurrently. At this point,
    reclaim must no longer install shadow pages because the inode freeing
    code needs to ensure the page tree is really empty.

    Add an address_space flag, AS_EXITING, that the inode freeing code sets
    under the tree lock before doing the final truncate. Reclaim will check
    for this flag before installing shadow pages.

    Signed-off-by: Johannes Weiner
    Reviewed-by: Rik van Riel
    Reviewed-by: Minchan Kim
    Cc: Andrea Arcangeli
    Cc: Bob Liu
    Cc: Christoph Hellwig
    Cc: Dave Chinner
    Cc: Greg Thelen
    Cc: Hugh Dickins
    Cc: Jan Kara
    Cc: KOSAKI Motohiro
    Cc: Luigi Semenzato
    Cc: Mel Gorman
    Cc: Metin Doslu
    Cc: Michel Lespinasse
    Cc: Ozgun Erdogan
    Cc: Peter Zijlstra
    Cc: Roman Gushchin
    Cc: Ryan Mallon
    Cc: Tejun Heo
    Cc: Vlastimil Babka
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Johannes Weiner
     

13 Sep, 2013

1 commit

08 May, 2013

1 commit

  • a27bb332c   aio: don't include aio.h in sched.h ... Browse Code »

    Faster kernel compiles by way of fewer unnecessary includes.

    [akpm@linux-foundation.org: fix fallout]
    [akpm@linux-foundation.org: fix build]
    Signed-off-by: Kent Overstreet
    Cc: Zach Brown
    Cc: Felipe Balbi
    Cc: Greg Kroah-Hartman
    Cc: Mark Fasheh
    Cc: Joel Becker
    Cc: Rusty Russell
    Cc: Jens Axboe
    Cc: Asai Thambi S P
    Cc: Selvan Mani
    Cc: Sam Bradshaw
    Cc: Jeff Moyer
    Cc: Al Viro
    Cc: Benjamin LaHaise
    Reviewed-by: "Theodore Ts'o"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kent Overstreet
     

01 May, 2013

2 commits

  • c2b3e1f76   hfs/hfsplus: convert dprint to hfs_dbg ... Browse Code »

    Use a more current logging style.

    Rename macro and uses.
    Add do {} while (0) to macro.
    Add DBG_ to macro.
    Add and use hfs_dbg_cont variant where appropriate.

    Signed-off-by: Joe Perches
    Cc: Vyacheslav Dubeyko
    Cc: Hin-Tak Leung
    Cc: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Joe Perches
     
  • 9509f1785   hfs: add error checking for hfs_find_init() ... Browse Code »

    hfs_find_init() may fail with ENOMEM, but there are places, where the
    returned value is not checked. The consequences can be very unpleasant,
    e.g. kfree uninitialized pointer and inappropriate mutex unlocking.

    The patch adds checks for errors in hfs_find_init().

    Found by Linux Driver Verification project (linuxtesting.org).

    Signed-off-by: Alexey Khoroshilov
    Reviewed-by: Vyacheslav Dubeyko
    Cc: Hin-Tak Leung
    Cc: Al Viro
    Cc: Artem Bityutskiy
    Cc: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alexey Khoroshilov
     

23 Feb, 2013

1 commit

21 Dec, 2012

1 commit

03 Oct, 2012

1 commit

  • 437589a74   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace ... Browse Code »

    Pull user namespace changes from Eric Biederman:
    "This is a mostly modest set of changes to enable basic user namespace
    support. This allows the code to code to compile with user namespaces
    enabled and removes the assumption there is only the initial user
    namespace. Everything is converted except for the most complex of the
    filesystems: autofs4, 9p, afs, ceph, cifs, coda, fuse, gfs2, ncpfs,
    nfs, ocfs2 and xfs as those patches need a bit more review.

    The strategy is to push kuid_t and kgid_t values are far down into
    subsystems and filesystems as reasonable. Leaving the make_kuid and
    from_kuid operations to happen at the edge of userspace, as the values
    come off the disk, and as the values come in from the network.
    Letting compile type incompatible compile errors (present when user
    namespaces are enabled) guide me to find the issues.

    The most tricky areas have been the places where we had an implicit
    union of uid and gid values and were storing them in an unsigned int.
    Those places were converted into explicit unions. I made certain to
    handle those places with simple trivial patches.

    Out of that work I discovered we have generic interfaces for storing
    quota by projid. I had never heard of the project identifiers before.
    Adding full user namespace support for project identifiers accounts
    for most of the code size growth in my git tree.

    Ultimately there will be work to relax privlige checks from
    "capable(FOO)" to "ns_capable(user_ns, FOO)" where it is safe allowing
    root in a user names to do those things that today we only forbid to
    non-root users because it will confuse suid root applications.

    While I was pushing kuid_t and kgid_t changes deep into the audit code
    I made a few other cleanups. I capitalized on the fact we process
    netlink messages in the context of the message sender. I removed
    usage of NETLINK_CRED, and started directly using current->tty.

    Some of these patches have also made it into maintainer trees, with no
    problems from identical code from different trees showing up in
    linux-next.

    After reading through all of this code I feel like I might be able to
    win a game of kernel trivial pursuit."

    Fix up some fairly trivial conflicts in netfilter uid/git logging code.

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (107 commits)
    userns: Convert the ufs filesystem to use kuid/kgid where appropriate
    userns: Convert the udf filesystem to use kuid/kgid where appropriate
    userns: Convert ubifs to use kuid/kgid
    userns: Convert squashfs to use kuid/kgid where appropriate
    userns: Convert reiserfs to use kuid and kgid where appropriate
    userns: Convert jfs to use kuid/kgid where appropriate
    userns: Convert jffs2 to use kuid and kgid where appropriate
    userns: Convert hpfs to use kuid and kgid where appropriate
    userns: Convert btrfs to use kuid/kgid where appropriate
    userns: Convert bfs to use kuid/kgid where appropriate
    userns: Convert affs to use kuid/kgid wherwe appropriate
    userns: On alpha modify linux_to_osf_stat to use convert from kuids and kgids
    userns: On ia64 deal with current_uid and current_gid being kuid and kgid
    userns: On ppc convert current_uid from a kuid before printing.
    userns: Convert s390 getting uid and gid system calls to use kuid and kgid
    userns: Convert s390 hypfs to use kuid and kgid where appropriate
    userns: Convert binder ipc to use kuids
    userns: Teach security_path_chown to take kuids and kgids
    userns: Add user namespace support to IMA
    userns: Convert EVM to deal with kuids and kgids in it's hmac computation
    ...

    Linus Torvalds
     

21 Sep, 2012

1 commit

21 Aug, 2012

1 commit

  • 43829731d   workqueue: deprecate flush[_delayed]_work_sync() ... Browse Code »

    flush[_delayed]_work_sync() are now spurious. Mark them deprecated
    and convert all users to flush[_delayed]_work().

    If you're cc'd and wondering what's going on: Now all workqueues are
    non-reentrant and the regular flushes guarantee that the work item is
    not pending or running on any CPU on return, so there's no reason to
    use the sync flushes at all and they're going away.

    This patch doesn't make any functional difference.

    Signed-off-by: Tejun Heo
    Cc: Russell King
    Cc: Paul Mundt
    Cc: Ian Campbell
    Cc: Jens Axboe
    Cc: Mattia Dongili
    Cc: Kent Yoder
    Cc: David Airlie
    Cc: Jiri Kosina
    Cc: Karsten Keil
    Cc: Bryan Wu
    Cc: Benjamin Herrenschmidt
    Cc: Alasdair Kergon
    Cc: Mauro Carvalho Chehab
    Cc: Florian Tobias Schandinat
    Cc: David Woodhouse
    Cc: "David S. Miller"
    Cc: linux-wireless@vger.kernel.org
    Cc: Anton Vorontsov
    Cc: Sangbeom Kim
    Cc: "James E.J. Bottomley"
    Cc: Greg Kroah-Hartman
    Cc: Eric Van Hensbergen
    Cc: Takashi Iwai
    Cc: Steven Whitehouse
    Cc: Petr Vandrovec
    Cc: Mark Fasheh
    Cc: Christoph Hellwig
    Cc: Avi Kivity

    Tejun Heo
     

23 Jul, 2012

3 commits

  • 5687b5780   hfs: get rid of hfs_sync_super ... Browse Code »

    This patch makes hfs stop using the VFS '->write_super()' method along with
    the 's_dirt' superblock flag, because they are on their way out.

    The whole "superblock write-out" VFS infrastructure is served by the
    'sync_supers()' kernel thread, which wakes up every 5 (by default) seconds and
    writes out all dirty superblocks using the '->write_super()' call-back. But the
    problem with this thread is that it wastes power by waking up the system every
    5 seconds, even if there are no diry superblocks, or there are no client
    file-systems which would need this (e.g., btrfs does not use
    '->write_super()'). So we want to kill it completely and thus, we need to make
    file-systems to stop using the '->write_super()' VFS service, and then remove
    it together with the kernel thread.

    Tested using fsstress from the LTP project.

    Signed-off-by: Artem Bityutskiy
    Signed-off-by: Al Viro

    Artem Bityutskiy
     
  • 4527440d5   hfs: simplify a bit checking for R/O ... Browse Code »

    We have the following pattern in 2 places in HFS

    if (!RDONLY)
    hfs_mdb_commit();

    This patch pushes the RDONLY check down to 'hfs_mdb_commit()'. This will
    make the following patches a bit simpler.

    Signed-off-by: Artem Bityutskiy
    Signed-off-by: Al Viro

    Artem Bityutskiy
     
  • 715189d83   hfs: push lock_super down ... Browse Code »

    HFS uses 'lock_super()'/'unlock_super()' around 'hfs_mdb_commit()' in order
    to serialize MDB (Master Directory Block) changes. Push it down to
    'hfs_mdb_commit()' in order to simplify the code a bit.

    Signed-off-by: Artem Bityutskiy
    Signed-off-by: Al Viro

    Artem Bityutskiy