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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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both proc_dir_entry ->mode and populating functions
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... rather than open-coding it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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vfs_create() ignores everything outside of 16bit subset of its
mode argument; switching it to umode_t is obviously equivalent
and it's the only caller of the method
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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vfs_mkdir() gets int, but immediately drops everything that might not
fit into umode_t and that's the only caller of ->mkdir()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Move invalidate_bdev, block_sync_page into fs/block_dev.c. Export
kill_bdev as well, so brd doesn't have to open code it. Reduce
buffer_head.h requirement accordingly.
Removed a rather large comment from invalidate_bdev, as it looked a bit
obsolete to bother moving. The small comment replacing it says enough.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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unfortunately, just checking MS_BORN after having grabbed ->s_umount in
sget() is not enough; places that pick superblock from a list and
grab s_umount shared need the same check in addition to checking for
->s_root; otherwise three-way race between failing mount, sget() and
such list-walker can leave us with list-walker coming *second*, when
temporary active ref grabbed by sget() (to be dropped when sget()
notices that original mount has failed by checking MS_BORN) has
lead to deactivate_locked_super() from failing ->mount() *not* doing
->kill_sb() and just releasing ->s_umount. Once sget() gets through
and notices that MS_BORN had never been set it will drop the active
ref and fs will be shut down and kicked out of all lists, but it's
too late for something like sync_supers().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... and bury user_get_super()/statfs_by_dentry() - they are
purely internal now.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... so no exitcalls there. Not much would work if pipe(2) would stop
working, after all...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Seeing that just about every destructor got that INIT_LIST_HEAD() copied into
it, there is no point whatsoever keeping this INIT_LIST_HEAD in inode_init_once();
the cost of taking it into inode_init_always() will be negligible for pipes
and sockets and negative for everything else. Not to mention the removal of
boilerplate code from ->destroy_inode() instances...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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new helper (wrapper around mnt_drop_write()) to be used in pair with
mnt_want_write_file().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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the only user outside of fs/namespace.c has died
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... rather than duplicating that in callers
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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it's not needed anymore; we used to, back when we had to do
mount_subtree() by hand, complete with put_mnt_ns() in it.
No more... Apparmor didn't need it since the __d_path() fix.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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lose it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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a) mount --move is checking that ->mnt_parent is non-NULL before
looking if that parent happens to be shared; ->mnt_parent is never
NULL and it's not even an misspelled !mnt_has_parent()
b) pivot_root open-codes is_path_reachable(), poorly.
c) so does path_is_under(), while we are at it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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vfsmounts have ->mnt_parent pointing either to a different vfsmount
or to itself; it's never NULL and termination condition in loops
traversing the tree towards root is mnt == mnt->mnt_parent. At least
one place (see the next patch) is confused about what's going on;
let's add an explicit helper checking it right way and use it in
all places where we need it. Not that there had been too many,
but...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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mnt_{inc,dec}_count() is not cleaner than doing the corresponding
mnt_add_count() directly and mnt_set_count() is not used at all.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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A bunch of places in nfsd does mnt_{want,drop}_write on vfsmount of
export of given fhandle. Switched to obvious inlined helpers...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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it's both faster (in case when file has been opened for write) and cleaner.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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some stuff in there can actually become static; some belongs to pnode.h
as it's a private interface between namespace.c and pnode.c...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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No need to duplicate them in both callers; make it return
ERR_PTR(-ENOMEM) on allocation failure instead of NULL and
it'll be able to report rpc_lookup_cred() failures just
fine. Callers are much happier that way...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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The current check looks to see if the RFC1002 length is larger than
CIFSMaxBufSize, and fails if it is. The buffer is actually larger than
that by MAX_CIFS_HDR_SIZE.
This bug has been around for a long time, but the fact that we used to
cap the clients MaxBufferSize at the same level as the server tended
to paper over it. Commit c974befa changed that however and caused this
bug to bite in more cases.
Reported-and-Tested-by: Konstantinos Skarlatos <k.skarlatos@gmail.com>
Tested-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
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"debugfs: add tools to printk 32-bit registers" adds new functions which rely
on IOMEM functionality which is not present on all architectures and therefore
result in compile errors:
fs/debugfs/file.c: In function 'debugfs_print_regs32':
fs/debugfs/file.c:561:7: error: implicit declaration of function 'readl' [-Werror=implicit-function-declaration]
Add an #ifdef CONFIG_HAS_IOMEM to fix this
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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When finding the longest extent in an AG, we read the value directly
out of the AGF buffer without endian conversion. This will give an
incorrect length, resulting in FITRIM operations potentially not
trimming everything that it should.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
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The le64_to_cpu() forces the calculation to be unsigned, with
the effect that it can underflow leading to an incorrect large
value.
This bug only triggers in rare(ish) circumstances, an empty file
encoded as an extended regular file or a completely sparse file.
Normally empty files are encoded as a regular file rather than as
an extended regular file (and the regular file i_blocks calculation
doesn't have this bug). To save space regular file inodes are
optimised to encode the most commonly occurring files. Less
common regular files are encoded using extended regular file inodes
which contain extra information.
Empty files with nlinks greater than 1, and or empty files
with extended attributes are encoded using extended regular file
inodes and they will hit this bug.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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In the NFSv4.1 case, this could cause a spurious "NFSD: failed to write
recovery record (err -17); please check that /var/lib/nfs/v4recovery
exists and is writable.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Reported-by: Steve Dickson <SteveD@redhat.com>
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A Squashfs filesystem containing nothing but an empty directory,
although unusual and ultimately pointless, is still valid.
The directory_table >= next_table sanity check rejects these
filesystems as invalid because the directory_table is empty and
equal to next_table.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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Only the ioctl core should see the DVBv3 compat stuff, as its
contents are not available anymore to the drivers.
As fs/compat_ioctl also handles DVBv3 ioctl's, it needs those
definitions:
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: array type has incomplete element type
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: array type has incomplete element type
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: array type has incomplete element type
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1345: error: initializer element is not constant
fs/compat_ioctl.c:1345: error: (near initialization for ‘ioctl_pointer[462]’)
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: array type has incomplete element type
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: array type has incomplete element type
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: array type has incomplete element type
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_parameters’
fs/compat_ioctl.c:1346: error: initializer element is not constant
fs/compat_ioctl.c:1346: error: (near initialization for ‘ioctl_pointer[463]’)
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: array type has incomplete element type
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: array type has incomplete element type
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: array type has incomplete element type
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: invalid application of ‘sizeof’ to incomplete type ‘struct dvb_frontend_event’
fs/compat_ioctl.c:1347: error: initializer element is not constant
fs/compat_ioctl.c:1347: error: (near initialization for ‘ioctl_pointer[464]’)
Reported-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: disable use of dcache for readdir etc.
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squashfs_cache_get() iterates over all entries to search for
block its looking for. Often get() / put() are called for
same block.
If we cache the current entry index, then we can optimise the
subsequent *_get() calls.
Signed-off-by: Ajeet Yadav <ajeet.yadav.77@gmail.com>
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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squashfs_read_metadata forgets to release the cache block if
an error has occurred.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: log all dirty inodes in xfs_fs_sync_fs
xfs: log the inode in ->write_inode calls for kupdate
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Commit 2a95ea6c0d129b4 ("procfs: do not overflow get_{idle,iowait}_time
for nohz") did not take into account that one some architectures jiffies
and cputime use different units.
This causes get_idle_time() to return numbers in the wrong units, making
the idle time fields in /proc/stat wrong.
Instead of converting the usec value returned by
get_cpu_{idle,iowait}_time_us to units of jiffies, use the new function
usecs_to_cputime64 to convert it to the correct unit of cputime64_t.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Artem S. Tashkinov" <t.artem@mailcity.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ceph attempts to use the dcache to satisfy negative lookups and readdir
when the entire directory contents are in cache. Disable this behavior
until lingering bugs in this code are shaken out; we'll re-enable these
hooks once things are fully stable.
Signed-off-by: Sage Weil <sage@newdream.net>
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ext4_{set,clear}_bit() is defined as __test_and_{set,clear}_bit_le() for
ext4. Only two ext4_{set,clear}_bit() calls check the return value. The
rest of calls ignore the return value and they can be replaced with
__{set,clear}_bit_le().
This changes ext4_{set,clear}_bit() from __test_and_{set,clear}_bit_le()
to __{set,clear}_bit_le() and introduces ext4_test_and_{set,clear}_bit()
for the two places where old bit needs to be returned.
This ext4_{set,clear}_bit() change is considered safe, because if someone
uses these macros without noticing the change, new ext4_{set,clear}_bit
don't have return value and causes compiler errors where the return value
is used.
This also removes unused ext4_find_first_zero_bit().
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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