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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull second try at vfs part d#2 from Al Viro:
"Miklos' first series (with do_lookup() rewrite split into edible
chunks) + assorted bits and pieces.
The 'untangling of do_lookup()' series is is a splitup of what used to
be a monolithic patch from Miklos, so this series is basically "how do
I convince myself that his patch is correct (or find a hole in it)".
No holes found and I like the resulting cleanup, so in it went..."
Changes from try 1: Fix a boot problem with selinux, and commit messages
prettied up a bit.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (24 commits)
vfs: fix out-of-date dentry_unhash() comment
vfs: split __lookup_hash
untangling do_lookup() - take __lookup_hash()-calling case out of line.
untangling do_lookup() - switch to calling __lookup_hash()
untangling do_lookup() - merge d_alloc_and_lookup() callers
untangling do_lookup() - merge failure exits in !dentry case
untangling do_lookup() - massage !dentry case towards __lookup_hash()
untangling do_lookup() - get rid of need_reval in !dentry case
untangling do_lookup() - eliminate a loop.
untangling do_lookup() - expand the area under ->i_mutex
untangling do_lookup() - isolate !dentry stuff from the rest of it.
vfs: move MAY_EXEC check from __lookup_hash()
vfs: don't revalidate just looked up dentry
vfs: fix d_need_lookup/d_revalidate order in do_lookup
ext3: move headers to fs/ext3/
migrate ext2_fs.h guts to fs/ext2/ext2.h
new helper: ext2_image_size()
get rid of pointless includes of ext2_fs.h
ext2: No longer export ext2_fs.h to user space
mtdchar: kill persistently held vfsmount
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64252c75a2196a0cf1e0d3777143ecfe0e3ae650 "vfs: remove dget() from
dentry_unhash()" changed the implementation but not the comment.
Cc: Sage Weil <sage@newdream.net>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Split __lookup_hash into two component functions:
lookup_dcache - tries cached lookup, returns whether real lookup is needed
lookup_real - calls i_op->lookup
This eliminates code duplication between d_alloc_and_lookup() and
d_inode_lookup().
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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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now we have __lookup_hash() open-coded if !dentry case;
just call the damn thing instead...
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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Reorder if-else cases for starters...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Everything arriving into if (!dentry) will have need_reval = 1.
Indeed, the only way to get there with need_reval reset to 0 would
be via
if (unlikely(d_need_lookup(dentry)))
goto unlazy;
if (unlikely(dentry->d_flags & DCACHE_OP_REVALIDATE)) {
status = d_revalidate(dentry, nd);
if (unlikely(status <= 0)) {
if (status != -ECHILD)
need_reval = 0;
goto unlazy;
...
unlazy:
/* no assignments to dentry */
if (dentry && unlikely(d_need_lookup(dentry))) {
dput(dentry);
dentry = NULL;
}
and if d_need_lookup() had already been false the first time around, it
will remain false on the second call as well.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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d_lookup() *will* fail after successful d_invalidate(), if we are
holding i_mutex all along. IOW, we don't need to jump back to
l: - we know what path will be taken there and can do that (i.e.
d_alloc_and_lookup()) directly.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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keep holding ->i_mutex over revalidation parts
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Duplicate the revalidation-related parts into if (!dentry) branch.
Next step will be to pull them under i_mutex.
This and the next 8 commits are more or less a splitup of patch
by Miklos; folks, when you are working with something that convoluted,
carve your patches up into easily reviewed steps, especially when
a lot of codepaths involved are rarely hit...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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The only caller of __lookup_hash() that needs the exec permission check on
parent is lookup_one_len().
All lookup_hash() callers already checked permission in LOOKUP_PARENT walk.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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__lookup_hash() calls ->lookup() if the dentry needs lookup and on success
revalidates the dentry (all under dir->i_mutex).
While this is harmless it doesn't make a lot of sense.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Doing revalidate on a dentry which has not yet been looked up makes no sense.
Move the d_need_lookup() check before d_revalidate().
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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move mode-dependent parts to callers, kill unused arguments
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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Pull MTD changes from David Woodhouse:
- Artem's cleanup of the MTD API continues apace.
- Fixes and improvements for ST FSMC and SuperH FLCTL NAND, amongst
others.
- More work on DiskOnChip G3, new driver for DiskOnChip G4.
- Clean up debug/warning printks in JFFS2 to use pr_<level>.
Fix up various trivial conflicts, largely due to changes in calling
conventions for things like dmaengine_prep_slave_sg() (new inline
wrapper to hide new parameter, clashing with rewrite of previously last
parameter that used to be an 'append' flag, and is now a bitmap of
'unsigned long flags').
(Also some header file fallout - like so many merges this merge window -
and silly conflicts with sparse fixes)
* tag 'for-linus-3.4' of git://git.infradead.org/mtd-2.6: (120 commits)
mtd: docg3 add protection against concurrency
mtd: docg3 refactor cascade floors structure
mtd: docg3 increase write/erase timeout
mtd: docg3 fix inbound calculations
mtd: nand: gpmi: fix function annotations
mtd: phram: fix section mismatch for phram_setup
mtd: unify initialization of erase_info->fail_addr
mtd: support ONFI multi lun NAND
mtd: sm_ftl: fix typo in major number.
mtd: add device-tree support to spear_smi
mtd: spear_smi: Remove default partition information from driver
mtd: Add device-tree support to fsmc_nand
mtd: fix section mismatch for doc_probe_device
mtd: nand/fsmc: Remove sparse warnings and errors
mtd: nand/fsmc: Add DMA support
mtd: nand/fsmc: Access the NAND device word by word whenever possible
mtd: nand/fsmc: Use dev_err to report error scenario
mtd: nand/fsmc: Use devm routines
mtd: nand/fsmc: Modify fsmc driver to accept nand timing parameters via platform
mtd: fsmc_nand: add pm callbacks to support hibernation
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Initialization of 'erase_info->fail_addr' to MTD_FAIL_ADDR_UNKNOWN prior
erase operation is duplicated accross several MTD drivers, and also taken
care of by some MTD users as well.
Harmonize it: initialize 'fail_addr' within 'mtd_erase()' interface.
Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Use pr_<level> to prefix KBUILD_MODNAME via pr_fmt.
Remove obfuscating defines and use constants in pr_<level>
No need for a do {} while (0) for single statements.
Form of JFFS_<LEVEL> output changes from
"JFFS2 notice: " to "jffs2: notice: "
Added pr_fmt to xattr.c
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Use pr_fmt to prefix KBUILD_MODNAME to appropriate logging messages.
Remove now unnecessary internal prefixes from formats.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Use the more current logging style.
Coalesce formats, align arguments.
Convert uses of embedded function names to %s, __func__.
A couple of long line checkpatch errors I don't care about exist.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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D1 and D2 macros are mostly uses to emit debugging messages.
Convert the logging uses of D1 & D2 to jffs2_dbg(level, fmt, ...)
to be a bit more consistent style with the rest of the kernel.
All jffs2_dbg output is now at KERN_DEBUG where some of
the previous uses were emitted at various KERN_<LEVEL>s.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Signed-off-by: Nikola Pajkovsky <n.pajkovsky@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Correct spelling "modul" to "module" in
fs/hffs2/compr.c
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Per call site OOM messages are unnecessary.
k.alloc and v.alloc failures use dump_stack().
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Correct spelling "scaning" to scanning" in
fs/jffs2/scan.c
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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There were a few instances of the old MTD interface remaining for JFFS2. We
fix one error that shows up (only when CONFIG_JFFS2_FS_WRITEBUFFER is not
defined) like this:
fs/jffs2/read.c: In function 'jffs2_read_dnode':
fs/jffs2/read.c:36:8: error: 'struct mtd_info' has no member named 'read'
fs/jffs2/read.c:112:8: error: 'struct mtd_info' has no member named 'read'
...
We also simply remove two macros that are not in use, were not updated to
the new MTD interface, and don't even utilize the old interface properly.
(That means they weren't used since commit 8593fbc6, year 2006; almost 6
years ago, for those who don't want to do the math)
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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We have changed the MTD API and now ROMFS should use 'mtd_read()' instead
of mtd->read().
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Commit 10934478e44d9a5a7b16dadd89094fb608cf101e did not remove now useless
"if (mtd->point)" check mistakingly - let's kill it now.
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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Pull cifs fixes from Steve French.
* git://git.samba.org/sfrench/cifs-2.6:
[CIFS] Update CIFS version number to 1.77
CIFS: Add missed forcemand mount option
[CIFS] Fix trivial sparse warning with asyn i/o patch
cifs: handle "sloppy" option appropriately
cifs: use standard token parser for mount options
cifs: remove /proc/fs/cifs/OplockEnabled
cifs: convert cifs_iovec_write to use async writes
cifs: call cifs_update_eof with i_lock held
cifs: abstract out function to marshal up the iovec array for async writes
cifs: fix up get_numpages
cifs: make cifsFileInfo_get return the cifsFileInfo pointer
cifs: fix allocation in cifs_write_allocate_pages
cifs: allow caller to specify completion op when allocating writedata
cifs: add pid field to cifs_writedata
cifs: add new cifsiod_wq workqueue
CIFS: Change mid_q_entry structure fields
CIFS: Expand CurrentMid field
CIFS: Separate protocol-specific code from cifs_readv_receive code
CIFS: Separate protocol-specific code from demultiplex code
CIFS: Separate protocol-specific code from transport routines
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Signed-off-by: Steve French <sfrench@us.ibm.com>
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The 'forcemand' form of 'forcemandatorylock' mount option was missed
when the code moved to use the standard token parser. Return it back.
Also fix a comment style in the parser.
Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
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Signed-off-by: Steve French <sfrench@us.ibm.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
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cifs.ko has historically been tolerant of options that it does not
recognize. This is not normal behavior for a filesystem however.
Usually, it should only do this if you mount with '-s', and autofs
generally passes -s to the mount command to allow this behavior.
This patch makes cifs handle the option "sloppy" appropriately. If it's
present in the options string, then the client will tolerate options
that it doesn't recognize. If it's not present then the client will
error out in the presence of options that it does not recognize and
throw an error message explaining why.
There is also a companion patch being proposed for mount.cifs to make it
append "sloppy" to the mount options when passed the '-s' flag. This also
should (obviously) be applied on top of Sachin's conversion to the
standard option parser.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-By: Sachin Prabhu <sprabhu@redhat.com>
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Use the standard token parser instead of the long if condition to parse
cifs mount options.
This was first proposed by Scott Lovenberg
http://lists.samba.org/archive/linux-cifs-client/2010-May/006079.html
Mount options have been grouped together in terms of their input types.
Aliases for username, password, domain and credentials have been added.
The password parser has been modified to make it easier to read.
Since the patch was first proposed, the following bugs have been fixed
1) Allow blank 'pass' option to be passed by the cifs mount helper when
using sec=none.
2) Do not explicitly set vol->nullauth to 0. This causes a problem
when using sec=none while also using a username.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
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We've had a deprecation warning on this file for 2 releases now. Remove
it as promised for 3.4.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
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cifs_update_eof has the potential to be racy if multiple threads are
trying to modify it at the same time. Protect modifications of the
server_eof value with the inode->i_lock.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
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We'll need to do something a bit different depending on the caller.
Abstract the code that marshals the page array into an iovec.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
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Use DIV_ROUND_UP. Also, PAGE_SIZE is more appropriate here since these
aren't pagecache pages.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
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The gfp flags are currently set to __GPF_HIGHMEM, which doesn't allow
for any reclaim. Make this more resilient by or'ing that with
GFP_KERNEL. Also, get rid of the goto and unify the exit codepath.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Pavel Shilovsky <piastry@etersoft.ru>
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We'll need a different set of write completion ops when not writing out
of the pagecache.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
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We'll need this to handle rwpidforward option correctly when we use
async writes in the aio_write op.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru>
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