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* [XFS] Return case-insensitive match for dentry cacheBarry Naujok2008-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | This implements the code to store the actual filename found during a lookup in the dentry cache and to avoid multiple entries in the dcache pointing to the same inode. To avoid polluting the dcache, we implement a new directory inode operations for lookup. xfs_vn_ci_lookup() stores the correct case name in the dcache. The "actual name" is only allocated and returned for a case- insensitive match and not an actual match. Another unusual interaction with the dcache is not storing negative dentries like other filesystems doing a d_add(dentry, NULL) when an ENOENT is returned. During the VFS lookup, if a dentry returned has no inode, dput is called and ENOENT is returned. By not doing a d_add, this actually removes it completely from the dcache to be reused. create/rename have to be modified to support unhashed dentries being passed in. SGI-PV: 981521 SGI-Modid: xfs-linux-melb:xfs-kern:31208a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
* dcache: Add case-insensitive support d_ci_add() routineBarry Naujok2008-07-28
| | | | | | | | | | | | | | | | This add a dcache entry to the dcache for lookup, but changing the name that is associated with the entry rather than the one passed in to the lookup routine. First, it sees if the case-exact match already exists in the dcache and uses it if one exists. Otherwise, it allocates a new node with the new name and splices it into the dcache. Original code from ntfs_lookup in fs/ntfs/namei.c by Anton Altaparmakov. Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Anton Altaparmakov <aia21@cantab.net> Acked-by: Christoph Hellwig <hch@infradead.org>
* [XFS] Add op_flags field and helpers to xfs_da_argsBarry Naujok2008-07-28
| | | | | | | | | | | | | | | | The end of the xfs_da_args structure has 4 unsigned char fields for true/false information on directory and attr operations using the xfs_da_args structure. The following converts these 4 into a op_flags field that uses the first 4 bits for these fields and allows expansion for future operation information (eg. case-insensitive lookup request). SGI-PV: 981520 SGI-Modid: xfs-linux-melb:xfs-kern:31206a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
* [XFS] Name operation vector for hash and compareBarry Naujok2008-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds two pieces of functionality for the basis of case-insensitive support in XFS: 1. A comparison result enumerated type: xfs_dacmp. It represents an exact match, case-insensitive match or no match at all. This patch only implements different and exact results. 2. xfs_nameops vector for specifying how to perform the hash generation of filenames and comparision methods. In this patch the hash vector points to the existing xfs_da_hashname function and the comparison method does a length compare, and if the same, does a memcmp and return the xfs_dacmp result. All filename functions that use the hash (create, lookup remove, rename, etc) now use the xfs_nameops.hashname function and all directory lookup functions also use the xfs_nameops.compname function. The lookup functions also handle case-insensitive results even though the default comparison function cannot return that. And important aspect of the lookup functions is that an exact match always has precedence over a case-insensitive. So while a case-insensitive match is found, we have to keep looking just in case there is an exact match. In the meantime, the info for the first case-insensitive match is retained if no exact match is found. SGI-PV: 981519 SGI-Modid: xfs-linux-melb:xfs-kern:31205a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
* [XFS]Eric Sandeen2008-07-28
| | | | | | | | | | | | | | | | | | de-duplicate calls to xfs_attr_trace_enter Every call to xfs_attr_trace_enter() shares the exact same 16 args in the middle... just send in the context pointer and let the next level down split it into the ktrace. Compile tested only. SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:31200a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Niv Sardi <xaiki@sgi.com> Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] add missing call to xfs_filestream_unmount on xfs_mountfs failureChristoph Hellwig2008-07-28
| | | | | | | | | SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31199a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] rename error2 goto label in xfs_fs_fill_superChristoph Hellwig2008-07-28
| | | | | | | | | SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31198a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] kill calls to xfs_binval in the mount error pathChristoph Hellwig2008-07-28
| | | | | | | | | | | | | xfs_binval aka xfs_flush_buftarg is the first thing done in xfs_free_buftarg, so there is no need to have duplicated calls just before xfs_free_buftarg in the mount failure path. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31197a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] kill xfs_mount_initChristoph Hellwig2008-07-28
| | | | | | | | | | | | | | | xfs_mount_init is inlined into xfs_fs_fill_super and allocation switched to kzalloc. Plug a leak of the mount structure for most early mount failures. Move xfs_icsb_init_counters to as late as possible in the mount path and make sure to undo it so that no stale hotplug cpu notifiers are left around on mount failures. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31196a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] allow xfs_args_allocate to failChristoph Hellwig2008-07-28
| | | | | | | | | | | Switch xfs_args_allocate to kzalloc and handle failures. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31195a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] add xfs_setup_devices helperChristoph Hellwig2008-07-28
| | | | | | | | | | | | Split setting the block and sector size out of xfs_fs_fill_super into a small helper to make xfs_fs_fill_super more readable. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31194a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] sort out opening and closing of the block devicesChristoph Hellwig2008-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently closing the rt/log block device is done in the wrong spot, and far too early. So revampt it: - xfs_blkdev_put moved out of xfs_free_buftarg into the caller so that it is done after tearing down the buftarg completely. - call to xfs_unmountfs_close moved from xfs_mountfs into caller so that it's done after tearing down the filesystem completely. - xfs_unmountfs_close is renamed to xfs_close_devices and made static in xfs_super.c - opening of the block devices is split into a helper xfs_open_devices that is symetric in use to xfs_close_devices - xfs_unmountfs can now lose struct cred - error handling around device opening sanitized in xfs_fs_fill_super SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31193a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] don't call xfs_freesb from xfs_mountfs failure caseChristoph Hellwig2008-07-28
| | | | | | | | | | | | Freeing of the superblock is already handled in the caller, and that is more symmetric with the mount path, too. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31192a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] merge xfs_mount into xfs_fs_fill_superChristoph Hellwig2008-07-28
| | | | | | | | | | | | | xfs_mount is already pretty linux-specific so merge it into xfs_fs_fill_super to allow for a more structured mount code in the next patches. xfs_start_flags and xfs_finish_flags also move to xfs_super.c. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31189a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] merge xfs_unmount into xfs_fs_put_super / xfs_fs_fill_superChristoph Hellwig2008-07-28
| | | | | | | | | | | | | | | | | xfs_unmount is small and already pretty Linux specific, so merge it into the callers. The real unmount path is simplified a little by doing a WARN_ON on the xfs_unmount_flush retval directly instead of propagating the error back to the caller, and the mout failure case in simplified significantly by removing the forced shutdown case and all the dmapi events that shouldn't be sent because the dmapi mount event hasn't been sent by that time either. SGI-PV: 981951 SGI-Modid: xfs-linux-melb:xfs-kern:31188a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] kill xfs_igrow_start and xfs_igrow_finishChristoph Hellwig2008-07-28
| | | | | | | | | | | | | | | | | | xfs_igrow_start just expands to xfs_zero_eof with two asserts that are useless in the context of the only caller and some rather confusing comments. xfs_igrow_finish is just a few lines of code decorated again with useless asserts and confusing comments. Just kill those two and merge them into xfs_setattr. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31186a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] merge xfs_mntupdate into xfs_fs_remountChristoph Hellwig2008-07-28
| | | | | | | | | | | | xfs_mntupdate already is completely Linux specific due to the VFS flags passed in, so it might aswell be merged into xfs_fs_remount. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31185a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] kill xfs_uuid_unmountChristoph Hellwig2008-07-28
| | | | | | | | | | | Quite useless wrapper that doesn't help making the code more readable. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31184a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Update valid fields in xfs_mount_log_sb()David Chinner2008-07-28
| | | | | | | | | | | | | Recent changes to update the version number during mount (attr2 stuff) failed to change the assert that checked for calid flags being changed on mount. Clearly this path hasn't been exercised by the test code.... SGI-PV: 981950 SGI-Modid: xfs-linux-melb:xfs-kern:31183a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Kill attr_capable checks as already done in xattr_permission.Christoph Hellwig2008-07-28
| | | | | | | | | | | | | No need for addition permission checks in the xattr handler, fs/xattr.c:xattr_permission() already does them, and in fact slightly more strict then what was in the attr_capable handlers. SGI-PV: 981809 SGI-Modid: xfs-linux-melb:xfs-kern:31164a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Convert l_flushsema to a sv_tMatthew Wilcox2008-07-28
| | | | | | | | | | | | | | | | | | | | | The l_flushsema doesn't exactly have completion semantics, nor mutex semantics. It's used as a list of tasks which are waiting to be notified that a flush has completed. It was also being used in a way that was potentially racy, depending on the semaphore implementation. By using a sv_t instead of a semaphore we avoid the need for a separate counter, since we know we just need to wake everything on the queue. Original waitqueue implementation from Matthew Wilcox. Cleanup and conversion to sv_t by Christoph Hellwig. SGI-PV: 981507 SGI-Modid: xfs-linux-melb:xfs-kern:31059a Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Ensure that 2 GiB xfs logs work properly.Michael Nishimoto2008-07-28
| | | | | | | | | | | | We found this while experimenting with 2GiB xfs logs. The previous code never assumed that xfs logs would ever get so large. SGI-PV: 981502 SGI-Modid: xfs-linux-melb:xfs-kern:31058a Signed-off-by: Michael Nishimoto <miken@agami.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Remove unused wbc parameter from xfs_start_page_writeback()Denys Vlasenko2008-07-28
| | | | | | | | | SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31057a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Remove unused Falgs parameter from xfs_qm_dqpurge()Denys Vlasenko2008-07-28
| | | | | | | | | SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31056a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Remove unused arg from kmem_free()Denys Vlasenko2008-07-28
| | | | | | | | | | | | | | kmem_free() function takes (ptr, size) arguments but doesn't actually use second one. This patch removes size argument from all callsites. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31050a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Fix up noattr2 so that it will properly update the versionnum andTim Shimmin2008-07-28
| | | | | | | | | | | | | | | | features2 fields. Previously, mounting with noattr2 failed to achieve anything because although it cleared the attr2 mount flag, it would set it again as soon as it processed the superblock fields. The fix now has an explicit noattr2 flag and uses it later to fix up the versionnum and features2 fields. SGI-PV: 980021 SGI-Modid: xfs-linux-melb:xfs-kern:31003a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* [XFS] Split xfs_dir2_leafn_lookup_int into its two pieces of functionalityBarry Naujok2008-07-28
| | | | | | | | | SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:30834a Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
* Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2008-07-27
|\ | | | | | | | | | | * 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Ensure we call nfs_sb_deactive() after releasing the directory inode nfs_remount oops when rebooting + possible fix
| * NFS: Ensure we call nfs_sb_deactive() after releasing the directory inodeTrond Myklebust2008-07-27
| | | | | | | | | | | | | | | | In order to avoid the "Busy inodes after unmount" error message, we need to ensure that nfs_async_unlink_release() releases the super block after the call to nfs_free_unlinkdata(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * nfs_remount oops when rebooting + possible fixMarc Zyngier2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jeff, Trond, The commit 48b605f83c920d8daa50e43fc2c7f718e04c7bfa (NFS: implement option checking when remounting NFS filesystems (resend)) generate an Oops on my platform when rebooting while its root FS on an NFS share (NFSv3, TCP) : Unmounting local filesystems...done. Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c3d00000 [00000000] *pgd=a3d72031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core CPU: 0 Not tainted (2.6.26-03414-g33af79d-dirty #15) PC is at nfs_remount+0x40/0x264 LR is at do_remount_sb+0x158/0x194 pc : [<c00bbf54>] lr : [<c0076c40>] psr: 60000013 sp : c2dd1e70 ip : c2dd1e98 fp : c2dd1e94 r10: 00000040 r9 : c3d17000 r8 : c3c3fc40 r7 : 00000000 r6 : 00000000 r5 : c3d2b200 r4 : 00000000 r3 : 00000003 r2 : 00000000 r1 : c2dd1e9c r0 : c3c3fc00 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0000397f Table: a3d00000 DAC: 00000015 Process mount (pid: 1462, stack limit = 0xc2dd0270) Stack: (0xc2dd1e70 to 0xc2dd2000) 1e60: 00000000 c3c3fc00 00000000 00000000 1e80: c3c3fc40 c3d17000 c2dd1ebc c2dd1e98 c0076c40 c00bbf20 c01c61e4 00000001 1ea0: c2dd1ebc 00000001 c3c3fc00 c2dd1ef0 c2dd1ee4 c2dd1ec0 c008c6d8 c0076af4 1ec0: 00000021 00000040 c2dd1ef0 c3d77000 c3eaa000 00000000 c2dd1f6c c2dd1ee8 1ee0: c008d1bc c008c5f8 00000000 c2dd0000 c3c0c320 c3805b38 c002064c 0001f820 1f00: 0001f810 00000001 00000001 00000000 c2dd0000 00000000 c2dd1f34 c2dd1f28 1f20: c005ead8 c005e6f8 c2dd1f44 c2dd1f38 c005eaf8 c005ead0 c2dd1f6c c2dd1f48 1f40: c008ae3c 00000000 c3d77000 0001f810 c0ed0021 c0020ca8 c2dd0000 00000000 1f60: c2dd1fa4 c2dd1f70 c008d2d4 c008d0bc 00000000 0001f810 c2dd1f9c c3eaa000 1f80: c3d17000 00000000 00000000 be8b6aa8 be8b6ad0 00000015 00000000 c2dd1fa8 1fa0: c0020b00 c008d254 00000000 be8b6aa8 0001f810 0001f820 0001f830 c0ed0021 1fc0: 00000000 be8b6aa8 be8b6ad0 00000015 00000000 be8b6ad0 0001f810 be8b6aa8 1fe0: 0001f810 be8b6964 0000aab8 40125124 60000010 0001f810 00000000 00000000 Backtrace: [<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194) r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00 r4:00000000 [<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118) r6:c2dd1ef0 r5:c3c3fc00 r4:00000001 [<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198) [<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4) [<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c) r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000 Code: 0a000086 ea000006 e3530003 8a000004 (e5923000) ---[ end trace 55e1b689cf8c8a6a ]--- ------------[ cut here ]------------ WARNING: at kernel/exit.c:966 do_exit+0x3c/0x628() Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core [<c0025168>] (dump_stack+0x0/0x14) from [<c0032154>] (warn_on_slowpath+0x4c/0x68) [<c0032108>] (warn_on_slowpath+0x0/0x68) from [<c003531c>] (do_exit+0x3c/0x628) r6:0000000b r5:c3c3dc80 r4:c2dd0000 [<c00352e0>] (do_exit+0x0/0x628) from [<c0025004>] (die+0x2b0/0x30c) [<c0024d54>] (die+0x0/0x30c) from [<c00270bc>] (__do_kernel_fault+0x6c/0x80) [<c0027050>] (__do_kernel_fault+0x0/0x80) from [<c00272e0>] (do_page_fault+0x210/0x230) r7:c3fa7118 r6:c3c3dc80 r5:c3d166a8 r4:00010000 [<c00270d0>] (do_page_fault+0x0/0x230) from [<c00201ec>] (do_DataAbort+0x3c/0xa0) [<c00201b0>] (do_DataAbort+0x0/0xa0) from [<c002064c>] (__dabt_svc+0x4c/0x60) Exception stack(0xc2dd1e28 to 0xc2dd1e70) 1e20: c3c3fc00 c2dd1e9c 00000000 00000003 00000000 c3d2b200 1e40: 00000000 00000000 c3c3fc40 c3d17000 00000040 c2dd1e94 c2dd1e98 c2dd1e70 1e60: c0076c40 c00bbf54 60000013 ffffffff r8:c3c3fc40 r7:00000000 r6:00000000 r5:c2dd1e5c r4:ffffffff [<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194) r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00 r4:00000000 [<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118) r6:c2dd1ef0 r5:c3c3fc00 r4:00000001 [<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198) [<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4) [<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c) r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000 ---[ end trace 55e1b689cf8c8a6a ]--- /etc/rc6.d/S60umountroot: line 17: 1462 Segmentation fault mount $MOUNT_FORCE_OPT -n -o remount,ro -t dummytype dummydev / 2> /dev/null The new super.c:nfs_remount function doesn't check the validity of the options/options4 pointers. Unfortunately, this seems to happend. The obvious patch seems to check the pointers, and not to do anything if the happend to be NULL. Tested on an XScale PXA255 system, latest git. Regards, M. Signed-off-by: Marc Zyngier <marc.zyngier@altran.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | task IO accounting: move all IO statistics in struct task_io_accountingAndrea Righi2008-07-27
|/ | | | | | | | | | | Simplify the code of include/linux/task_io_accounting.h. It is also more reasonable to have all the task i/o-related statistics in a single struct (task_io_accounting). Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* task IO accounting: improve code readabilityAndrea Righi2008-07-27
| | | | | | | | | | | | | | | | | | | | | | Put all i/o statistics in struct proc_io_accounting and use inline functions to initialize and increment statistics, removing a lot of single variable assignments. This also reduces the kernel size as following (with CONFIG_TASK_XACCT=y and CONFIG_TASK_IO_ACCOUNTING=y). text data bss dec hex filename 11651 0 0 11651 2d83 kernel/exit.o.before 11619 0 0 11619 2d63 kernel/exit.o.after 10886 132 136 11154 2b92 kernel/fork.o.before 10758 132 136 11026 2b12 kernel/fork.o.after 3082029 807968 4818600 8708597 84e1f5 vmlinux.o.before 3081869 807968 4818600 8708437 84e155 vmlinux.o.after Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Acked-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.infradead.org/mtd-2.6Linus Torvalds2008-07-26
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/mtd-2.6: (57 commits) [MTD] [NAND] subpage read feature as a way to increase performance. CPUFREQ: S3C24XX NAND driver frequency scaling support. [MTD][NAND] au1550nd: remove unused variable [MTD] jedec_probe: Fix SST 16-bit chip detection [MTD][MTDPART] Fix a division by zero bug [MTD][MTDPART] Cleanup and document the erase region handling [MTD][MTDPART] Handle most checkpatch findings [MTD][MTDPART] Seperate main loop from per-partition code in add_mtd_partition [MTD] physmap: resume already suspended chips on failure to suspend [MTD] physmap: Fix suspend/resume/shutdown bugs. [MTD] [NOR] Fix -ETIMEO errors in CFI driver [MTD] [NAND] fsl_elbc_nand: fix section mismatch with CONFIG_MTD_OF_PARTS=y [JFFS2] Use .unlocked_ioctl [MTD] Fix const assignment in the MTD command line partitioning driver [MTD] [NOR] gen_probe: No debug message when debugging is disabled [MTD] [NAND] remove __PPC__ hardcoded address from DiskOnChip drivers [MTD] [MAPS] Remove the bast-flash driver. [MTD] [NAND] fsl_elbc_nand: ecclayout cleanups [MTD] [NAND] fsl_elbc_nand: implement support for flash-based BBT [MTD] [NAND] fsl_elbc_nand: fix OOB workability for large page NAND chips ...
| * Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6David Woodhouse2008-07-25
| |\
| * | [JFFS2] Use .unlocked_ioctlStoyan Gaydarov2008-07-11
| | | | | | | | | | | | | | | | | | | | | This changes the .ioctl to the .unlocked_ioctl version. Signed-off-by: Stoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2008-07-26
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (39 commits) [PATCH] fix RLIM_NOFILE handling [PATCH] get rid of corner case in dup3() entirely [PATCH] remove remaining namei_{32,64}.h crap [PATCH] get rid of indirect users of namei.h [PATCH] get rid of __user_path_lookup_open [PATCH] f_count may wrap around [PATCH] dup3 fix [PATCH] don't pass nameidata to __ncp_lookup_validate() [PATCH] don't pass nameidata to gfs2_lookupi() [PATCH] new (local) helper: user_path_parent() [PATCH] sanitize __user_walk_fd() et.al. [PATCH] preparation to __user_walk_fd cleanup [PATCH] kill nameidata passing to permission(), rename to inode_permission() [PATCH] take noexec checks to very few callers that care Re: [PATCH 3/6] vfs: open_exec cleanup [patch 4/4] vfs: immutable inode checking cleanup [patch 3/4] fat: dont call notify_change [patch 2/4] vfs: utimes cleanup [patch 1/4] vfs: utimes: move owner check into inode_change_ok() [PATCH] vfs: use kstrdup() and check failing allocation ...
| * | | [PATCH] fix RLIM_NOFILE handlingAl Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * dup2() should return -EBADF on exceeded sysctl_nr_open * dup() should *not* return -EINVAL even if you have rlimit set to 0; it should get -EMFILE instead. Check for orig_start exceeding rlimit taken to sys_fcntl(). Failing expand_files() in dup{2,3}() now gets -EMFILE remapped to -EBADF. Consequently, remaining checks for rlimit are taken to expand_files(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] get rid of corner case in dup3() entirelyAl Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since Ulrich is OK with getting rid of dup3(fd, fd, flags) completely, to hell the damn thing goes. Corner case for dup2() is handled in sys_dup2() (complete with -EBADF if dup2(fd, fd) is called with fd that is not open), the rest is done in dup3(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] get rid of indirect users of namei.hAl Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | fs.h needs path.h, not namei.h; nfs_fs.h doesn't need it at all. Several places in the tree needed direct include. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] get rid of __user_path_lookup_openAl Viro2008-07-26
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] f_count may wrap aroundAl Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | make it atomic_long_t; while we are at it, get rid of useless checks in affs, hfs and hpfs - ->open() always has it equal to 1, ->release() - to 0. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] dup3 fixUlrich Drepper2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Al Viro notice one cornercase that the new dup3() code. The dup2() function, as a special case, handles dup-ing to the same file descriptor. In this case the current dup3() code does nothing at all. I.e., it ingnores the flags parameter. This shouldn't happen, the close-on-exec flag should be set if requested. In case the O_CLOEXEC bit in the flags parameter is not set the dup3() function should behave in this respect identical to dup2(). This means dup3(fd, fd, 0) should not actively reset the c-o-e flag. The patch below implements this minor change. [AV: credits to Artur Grabowski for bringing that up as potential subtle point in dup2() behaviour] Signed-off-by: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] don't pass nameidata to __ncp_lookup_validate()Al Viro2008-07-26
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] don't pass nameidata to gfs2_lookupi()Al Viro2008-07-26
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] new (local) helper: user_path_parent()Al Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Preparation to untangling intents mess: reduce the number of do_path_lookup() callers. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] sanitize __user_walk_fd() et.al.Al Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * do not pass nameidata; struct path is all the callers want. * switch to new helpers: user_path_at(dfd, pathname, flags, &path) user_path(pathname, &path) user_lpath(pathname, &path) user_path_dir(pathname, &path) (fail if not a directory) The last 3 are trivial macro wrappers for the first one. * remove nameidata in callers. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] preparation to __user_walk_fd cleanupAl Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Almost all users __user_walk_fd() and friends care only about struct path. Get rid of the few that do not. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] kill nameidata passing to permission(), rename to inode_permission()Al Viro2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Incidentally, the name that gives hundreds of false positives on grep is not a good idea... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | [PATCH] take noexec checks to very few callers that careAl Viro2008-07-26
| | | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * | | Re: [PATCH 3/6] vfs: open_exec cleanupChristoph Hellwig2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Mon, May 19, 2008 at 12:01:49AM +0200, Marcin Slusarz wrote: > open_exec is needlessly indented, calls ERR_PTR with 0 argument > (which is not valid errno) and jumps into middle of function > just to return value. > So clean it up a bit. Still looks rather messy. See below for a better version. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-24 23:45:36 -0500