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2012-01-11jffs2: do not initialize variable unnecessarilyArtem Bityutskiy
Remove unnecessary initializer for a local variable. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-10Merge tag 'for-linus-3.3' of git://git.infradead.org/mtd-2.6Linus Torvalds
MTD pull for 3.3 * tag 'for-linus-3.3' of git://git.infradead.org/mtd-2.6: (113 commits) mtd: Fix dependency for MTD_DOC200x mtd: do not use mtd->block_markbad directly logfs: do not use 'mtd->block_isbad' directly mtd: introduce mtd_can_have_bb helper mtd: do not use mtd->suspend and mtd->resume directly mtd: do not use mtd->lock, unlock and is_locked directly mtd: do not use mtd->sync directly mtd: harmonize mtd_writev usage mtd: do not use mtd->lock_user_prot_reg directly mtd: mtd->write_user_prot_reg directly mtd: do not use mtd->read_*_prot_reg directly mtd: do not use mtd->get_*_prot_info directly mtd: do not use mtd->read_oob directly mtd: mtdoops: do not use mtd->panic_write directly romfs: do not use mtd->get_unmapped_area directly mtd: do not use mtd->get_unmapped_area directly mtd: do use mtd->point directly mtd: introduce mtd_has_oob helper mtd: mtdcore: export symbols cleanup mtd: clean-up the default_mtd_writev function ... Fix up trivial edit/remove conflict in drivers/staging/spectra/lld_mtd.c
2012-01-09mtd: do not use mtd->block_markbad directlyArtem Bityutskiy
Instead, use the new 'mtd_can_have_bb()', or just rely on 'mtd_block_markbad()' return code, which will be -EOPNOTSUPP if bad blocks are not supported. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: do not use mtd->sync directlyArtem Bityutskiy
This patch teaches 'mtd_sync()' to do nothing when the MTD driver does not have the '->sync()' method, which allows us to remove all direct 'mtd->sync' accesses. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: harmonize mtd_writev usageArtem Bityutskiy
This patch makes the 'mtd_writev()' function more usable and logical. We first teach it to fall-back to the 'default_mtd_writev()' function if the MTD driver does not define its own '->writev()' method. Then we make block2mtd and JFFS2 just 'mtd_writev()' instead of 'default_mtd_writev()' function. This means we can now stop exporting 'default_mtd_writev()' and instead, export 'mtd_writev()'. This is much cleaner and more logical, as well as allows us to get read of another direct 'mtd->writev' access in JFFS2. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: do use mtd->point directlyArtem Bityutskiy
Remove direct usage of the "mtd->point" function pointer. Instead, test the mtd_point() return code for '-EOPNOTSUPP'. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09jffs: remove custom mtd_fake_writev functionArtem Bityutskiy
Instead, use 'default_mtd_writev()' function which MTD provides. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_block_markbad interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_block_isbad interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_sync interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_writev interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_write_oob interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_read_oob interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_write interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_read interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_unpoint interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_point interfaceArtem Bityutskiy
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09mtd: introduce mtd_erase interfaceArtem Bityutskiy
This patch is part of a patch-set which changes the MTD interface from 'mtd->func()' form to 'mtd_func()' form. We need this because we want to add common code to to all drivers in the mtd core level, which is impossible with the current interface when MTD clients call driver functions like 'read()' or 'write()' directly. At this point we just introduce a new inline wrapper function, but later some of them are expected to gain more code. E.g., the input parameters check should be moved to the wrappers rather than be duplicated at many drivers. This particular patch introduced the 'mtd_erase()' interface. The following patches add all the other interfaces one by one. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-09jffs2: fix up error handling for insert_inode_lockedEric Sandeen
after 250df6ed274d767da844a5d9f05720b804240197 (fs: protect inode->i_state with inode->i_lock), insert_inode_locked() no longer returns the inode with I_NEW set on failure. However, the error handler still calls unlock_new_inode() on failure, which does a WARN_ON if I_NEW is not set, so any failure spews a lot of warnings. We can just drop the unlock_new_inode() if insert_inode_locked() fails here. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-01-06vfs: switch ->show_options() to struct dentry *Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->mknod() to umode_tAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-01-03switch ->create() to umode_tAl Viro
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>
2012-01-03switch vfs_mkdir() and ->mkdir() to umode_tAl Viro
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>
2012-01-03vfs: fix the stupidity with i_dentry in inode destructorsAl Viro
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>
2011-11-07Merge git://git.infradead.org/mtd-2.6Linus Torvalds
* git://git.infradead.org/mtd-2.6: (226 commits) mtd: tests: annotate as DANGEROUS in Kconfig mtd: tests: don't use mtd0 as a default mtd: clean up usage of MTD_DOCPROBE_ADDRESS jffs2: add compr=lzo and compr=zlib options jffs2: implement mount option parsing and compression overriding mtd: nand: initialize ops.mode mtd: provide an alias for the redboot module name mtd: m25p80: don't probe device which has status of 'disabled' mtd: nand_h1900 never worked mtd: Add DiskOnChip G3 support mtd: m25p80: add EON flash EN25Q32B into spi flash id table mtd: mark block device queue as non-rotational mtd: r852: make r852_pm_ops static mtd: m25p80: add support for at25df321a spi data flash mtd: mxc_nand: preset_v1_v2: unlock all NAND flash blocks mtd: nand: switch `check_pattern()' to standard `memcmp()' mtd: nand: invalidate cache on unaligned reads mtd: nand: do not scan bad blocks with NAND_BBT_NO_OOB set mtd: nand: wait to set BBT version mtd: nand: scrub BBT on ECC errors ... Fix up trivial conflicts: - arch/arm/mach-at91/board-usb-a9260.c Merged into board-usb-a926x.c - drivers/mtd/maps/lantiq-flash.c add_mtd_partitions -> mtd_device_register vs changed to use mtd_device_parse_register.
2011-11-02filesystems: add set_nlink()Miklos Szeredi
Replace remaining direct i_nlink updates with a new set_nlink() updater function. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Tested-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2011-10-19jffs2: add compr=lzo and compr=zlib optionsAndres Salomon
..to allow forcing of either compression scheme. This will override compiled-in defaults. jffs2_compress is reworked a bit, as the lzo/zlib override shares lots of code w/ the PRIORITY mode. v2: update show_options accordingly. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-10-19jffs2: implement mount option parsing and compression overridingAndres Salomon
Currently jffs2 has compile-time constants (and .config options) controlling whether or not the various compression/decompression drivers are built in and enabled. This is fine for embedded systems, but it clashes with distribution kernels. Distro kernels tend to turn on everything; this causes OpenFirmware to fall over, as it understands ZLIB-compressed inodes. Booting a kernel that has LZO compression enabled, writing to the boot partition, and then rebooting causes OFW to fail to read the kernel from the filesystem. This is because LZO compression has priority when writing new data to jffs2, if LZO is enabled. This patch adds mount option parsing, and a single supported option ("compr=none"). This adds the flexibility of being able to specify which compressor overrides on a per-superblock basis. For now, we can simply disable compression; additional flexibility coming soon. v2: kill some printks, and implement show_options as suggested by Artem Bityutskiy. Signed-off-by: Andres Salomon <dilinger@queued.net> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11mtd: rename MTD_OOB_* to MTD_OPS_*Brian Norris
These modes are not necessarily for OOB only. Particularly, MTD_OOB_RAW affected operations on in-band page data as well. To clarify these options and to emphasize that their effect is applied per-operation, we change the primary prefix to MTD_OPS_. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@intel.com>
2011-09-11jffs2: use mutex_is_locked() in __jffs2_flush_wbuf()Alexey Khoroshilov
Use a helper to test if a mutex is held instead of a hack with mutex_trylock(). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-09-11jffs2: Avoid unneeded 'if' before kfreeJesper Juhl
kfree() deals gracefully with NULL pointers, so it's pointless to test for one prior to calling it. This removes such a test from jffs2_scan_medium(). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Artem Bityutskiy <dedekind1@gmail.com>
2011-08-09Merge branch 'next-evm' of ↵James Morris
git://git.kernel.org/pub/scm/linux/kernel/git/zohar/ima-2.6 into next Conflicts: fs/attr.c Resolve conflict manually. Signed-off-by: James Morris <jmorris@namei.org>
2011-08-01switch posix_acl_equiv_mode() to umode_t *Al Viro
... so that &inode->i_mode could be passed to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-08-01switch posix_acl_create() to umode_t *Al Viro
so we can pass &inode->i_mode to it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-26jffs2: S_ISLNK(mode & S_IFMT) is pointlessAl Viro
it's S_ISLNK(mode), TYVM... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
2011-07-25fs: take the ACL checks to common codeChristoph Hellwig
Replace the ->check_acl method with a ->get_acl method that simply reads an ACL from disk after having a cache miss. This means we can replace the ACL checking boilerplate code with a single implementation in namei.c. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25kill boilerplates around posix_acl_create_masq()Al Viro
new helper: posix_acl_create(&acl, gfp, mode_p). Replaces acl with modified clone, on failure releases acl and replaces with NULL. Returns 0 or -ve on error. All callers of posix_acl_create_masq() switched. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25kill boilerplate around posix_acl_chmod_masq()Al Viro
new helper: posix_acl_chmod(&acl, gfp, mode). Replaces acl with modified clone or with NULL if that has failed; returns 0 or -ve on error. All callers of posix_acl_chmod_masq() switched to that - they'd been doing exactly the same thing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-25vfs: move ACL cache lookup into generic codeLinus Torvalds
This moves logic for checking the cached ACL values from low-level filesystems into generic code. The end result is a streamlined ACL check that doesn't need to load the inode->i_op->check_acl pointer at all for the common cached case. The filesystems also don't need to check for a non-blocking RCU walk case in their acl_check() functions, because that is all handled at a VFS layer. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-24fix jffs2 ACLs on big-endian with 16bit mode_tAl Viro
casting int * to mode_t * is not a good thing - on a *lot* of big-endian architectures mode_t happens to be smaller than int and there it breaks quite spectaculary... Fucked-up-by: commit cfc8dc6f6f69ede939e09c2af06a01adee577285 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-22jffs2: fix IN_DELETE_SELF on overwriting rename() killing a directoryAl Viro
We don't generate IN_DELETE_SELF on victim of overwriting rename() if it happens to be a directory. Trivially fixed by doing to ->i_nlink what we do ->pino_nlink a couple of lines later in jffs2_rename(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-22fs: Merge split stringsJean Delvare
No idea why these were split in the first place... Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-07-20fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlersJosef Bacik
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: Jan Kara <jack@suse.cz> Signed-off-by: Josef Bacik <josef@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20make d_splice_alias(ERR_PTR(err), dentry) = ERR_PTR(err)Al Viro
... and simplify the living hell out of callers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20->permission() sanitizing: don't pass flags to ->check_acl()Al Viro
not used in the instances anymore. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-20->permission() sanitizing: pass MAY_NOT_BLOCK to ->check_acl()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2011-07-18security: new security_inode_init_security API adds function callbackMimi Zohar
This patch changes the security_inode_init_security API by adding a filesystem specific callback to write security extended attributes. This change is in preparation for supporting the initialization of multiple LSM xattrs and the EVM xattr. Initially the callback function walks an array of xattrs, writing each xattr separately, but could be optimized to write multiple xattrs at once. For existing security_inode_init_security() calls, which have not yet been converted to use the new callback function, such as those in reiserfs and ocfs2, this patch defines security_old_inode_init_security(). Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
2011-05-28Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (36 commits) Cache xattr security drop check for write v2 fs: block_page_mkwrite should wait for writeback to finish mm: Wait for writeback when grabbing pages to begin a write configfs: remove unnecessary dentry_unhash on rmdir, dir rename fat: remove unnecessary dentry_unhash on rmdir, dir rename hpfs: remove unnecessary dentry_unhash on rmdir, dir rename minix: remove unnecessary dentry_unhash on rmdir, dir rename fuse: remove unnecessary dentry_unhash on rmdir, dir rename coda: remove unnecessary dentry_unhash on rmdir, dir rename afs: remove unnecessary dentry_unhash on rmdir, dir rename affs: remove unnecessary dentry_unhash on rmdir, dir rename 9p: remove unnecessary dentry_unhash on rmdir, dir rename ncpfs: fix rename over directory with dangling references ncpfs: document dentry_unhash usage ecryptfs: remove unnecessary dentry_unhash on rmdir, dir rename hostfs: remove unnecessary dentry_unhash on rmdir, dir rename hfsplus: remove unnecessary dentry_unhash on rmdir, dir rename hfs: remove unnecessary dentry_unhash on rmdir, dir rename omfs: remove unnecessary dentry_unhash on rmdir, dir rneame udf: remove unnecessary dentry_unhash from rmdir, dir rename ...
2011-05-28jffs2: remove unnecessary dentry_unhash from rmdir, dir renameSage Weil
jffs2 does not have problems with references to unlinked directories. CC: David Woodhouse <dwmw2@infradead.org> CC: linux-mtd@lists.infradead.org Signed-off-by: Sage Weil <sage@newdream.net> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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