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* quota: clean up Q_XQUOTASYNCChristoph Hellwig2010-03-04
| | | | | | | | | | | | | | | | | | | | Currently Q_XQUOTASYNC calls into the quota_sync method, but XFS does something entirely different in it than the rest of the filesystems. xfs_quota which calls Q_XQUOTASYNC expects an asynchronous data writeout to flush delayed allocations, while the "VFS" quota support wants to flush changes to the quota file. So make Q_XQUOTASYNC call into the writeback code directly and make the quota_sync method optional as XFS doesn't need in the sense expected by the rest of the quota code. GFS2 was using limited XFS-style quota and has a quota_sync method fitting neither the style used by vfs_quota_sync nor xfs_fs_quota_sync. I left it in for now as per discussion with Steve it expects to be called from the sync path this way. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* quota: simplify permission checkingChristoph Hellwig2010-03-04
| | | | | | | | | | Stop having complicated different routines for checking permissions for XQM vs "VFS" quotas. Instead do the checks for having sb->s_qcop and a valid type directly in do_quotactl, and munge the *quotactl_valid functions into a check_quotactl_permission helper that only checks for permissions. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* quota: special case Q_SYNC without device nameChristoph Hellwig2010-03-04
| | | | | | | | | | The Q_SYNC command can be called without the path to a device, in which case it iterates over all superblocks. Special case this variant directly in sys_quotactl so that the other code always gets a superblock and doesn't need to deal with this case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* quota: clean up checks for supported quota methodsChristoph Hellwig2010-03-04
| | | | | | | | Move the checks for sb->s_qcop->foo next to the actual calls for them, same for sb_has_quota_active checks where applicable. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* quota: split do_quotactlChristoph Hellwig2010-03-04
| | | | | | | Split out a helper for each non-trivial command from do_quotactl. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jan Kara <jack@suse.cz>
* quota: Fix warning when a delayed write happens before quota is enabledJan Kara2010-03-04
| | | | | | | | | | | | | | | If a delayed-allocation write happens before quota is enabled, the kernel spits out a warning: WARNING: at fs/quota/dquot.c:988 dquot_claim_space+0x77/0x112() because the fact that user has some delayed allocation is not recorded in quota structure. Make dquot_initialize() update amount of reserved space for user if it sees inode has some space reserved. Also make sure that reserved quota space does not go negative and we warn about the filesystem bug just once. Signed-off-by: Jan Kara <jack@suse.cz>
* quota: manage reserved space when quota is not active [v2]Dmitry Monakhov2010-03-04
| | | | | | | | | | | | | | | | | | | | | | | Since we implemented generic reserved space management interface, then it is possible to account reserved space even when quota is not active (similar to i_blocks/i_bytes). Without this patch following testcase result in massive comlain from WARN_ON in dquot_claim_space() TEST_CASE: mount /dev/sdb /mnt -oquota dd if=/dev/zero of=/mnt/test bs=1M count=1 quotaon /mnt # fs_reserved_spave == 1Mb # quota_reserved_space == 0, because quota was disabled dd if=/dev/zero of=/mnt/test seek=1 bs=1M count=1 # fs_reserved_spave == 2Mb # quota_reserved_space == 1Mb sync # ->dquot_claim_space() -> WARN_ON Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jan Kara <jack@suse.cz>
* jbd[2]: remove references to BUFFER_DEBUGChristoph Egger2010-03-04
| | | | | | | | | | CONFIG_BUFFER_DEBUG seems to have been removed from the documentation somewhere around 2.4.15 and seemingly hasn't been available even longer. It is, however, still referenced at one place from the jbd code (one is a copy of the other header). Time to clean it up Signed-off-by: Christoph Egger <siccegge@stud.informatik.uni-erlangen.de> Signed-off-by: Jan Kara <jack@suse.cz>
* ext3: trivial quota cleanupDmitry Monakhov2010-03-04
| | | | | | | | | | | The patch is aimed to reorganize and simplify quota code a bit. Quota code is itself complex enouth, but we can make it more readable in some places: - Move quota option parsing to separate functions. - Simplify old-quota and journaled-quota mix check. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jan Kara <jack@suse.cz>
* ext3: mount flags manipulation cleanupDmitry Monakhov2010-03-04
| | | | | | | | Replace intermediate EXT3_MOUNT_XXX flags manipulation to corresponding macro. Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Jan Kara <jack@suse.cz>
* ext3: Use bitops to read/modify EXT3_I(inode)->i_stateJan Kara2010-03-04
| | | | | | | | | At several places we modify EXT3_I(inode)->i_state without holding i_mutex (ext3_release_file, ext3_bmap, ext3_journalled_writepage, ext3_do_update_inode, ...). These modifications are racy and we can lose updates to i_state. So convert handling of i_state to use bitops which are atomic. Signed-off-by: Jan Kara <jack@suse.cz>
* quota: Cleanup S_NOQUOTA handlingJan Kara2010-03-04
| | | | | | | | | | | | | | | Cleanup handling of S_NOQUOTA inode flag and document it a bit. The flag does not have to be set under dqptr_sem. Only functions modifying inode's dquot pointers have to check the flag under dqptr_sem before going forward with the modification. This way we are sure that we cannot add new dquot pointers to the inode which is just becoming a quota file. The good thing about this cleanup is that there are no more places in quota code which enforce i_mutex vs. dqptr_sem lock ordering (in particular that dqptr_sem -> i_mutex of quota file). This should silence some (false) lockdep warnings with ext4 + quota and generally make life of some filesystems easier. Signed-off-by: Jan Kara <jack@suse.cz>
* Merge branch 'for-linus' of git://gitorious.org/linux-omap-dss2/linuxLinus Torvalds2010-03-02
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://gitorious.org/linux-omap-dss2/linux: (49 commits) OMAP: DSS2: Taal: Fix TE when resuming OMAP: DSS2: Taal: Fix ESD check OMAP: DSS2: OMAPFB: Constify some function parameters OMAP: DSS2: OMAPFB: install omapfb.h OMAP: DSS2: DSI: add error prints OMAP: DSS2: TPO-TD03MTEA1: fix function names OMAP: DSS2: DSI: add dsi_vc_dcs_read_2() helper OMAP: DSS2: OMAPFB: Remove FB_OMAP2_FORCE_AUTO_UPDATE OMAP: DSS2: DSI: remove external TE support OMAP: DSS2: move timing functions OMAP: DSS2: move set/get_wss() OMAP: DSS2: move enable/disable/suspend/resume OMAP: DSS2: move update() and sync() OMAP: DSS2: move set/get_update_mode() OMAP: DSS2: move enable/get_te() OMAP: DSS2: move get_recommended_bpp() OMAP: DSS2: move get_resolution() OMAP: DSS2: move enable/disable_channel to overlay manager OMAP: DSS2: move wait_vsync() OMAP: DSS2: move get/set_rotate() ...
| * OMAP: DSS2: Taal: Fix TE when resumingTomi Valkeinen2010-03-02
| | | | | | | | | | | | | | TE was not initialized properly on power on, which broke TE when resuming from suspend. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: Taal: Fix ESD checkTomi Valkeinen2010-03-01
| | | | | | | | | | | | Using taal_enable_te() when DSI bus was locked caused a deadlock. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: OMAPFB: Constify some function parametersVille Syrjälä2010-03-01
| | | | | | | | | | Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: OMAPFB: install omapfb.hVille Syrjälä2010-03-01
| | | | | | | | | | | | | | | | omapfb has several custom ioctls so user space needs the header in order to utilize them. Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: add error printsTomi Valkeinen2010-02-26
| | | | | | | | | | | | Add error printing for dsi_vc_dcs_write() and dsi_vc_dcs_read(). Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: TPO-TD03MTEA1: fix function namesTomi Valkeinen2010-02-26
| | | | | | | | | | | | | | Copy/paste had resulted in wrong function names in TPO TD043MTEA1 panel driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: add dsi_vc_dcs_read_2() helperTomi Valkeinen2010-02-25
| | | | | | | | | | | | | | Add dsi_vc_dcs_read_2() helper function to read two bytes from the DSI peripheral. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: OMAPFB: Remove FB_OMAP2_FORCE_AUTO_UPDATETomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | Remove the option for forcing auto-update. Auto-update for manual update displays is no more a DSS feature, so if a particular display devices does have auto-update mode, it should be in display's custom settings. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: remove external TE supportTomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | With the reworked model, DSI driver doesn't need to know anything about external TE lines. Thus we can remove ext_te support, and only leave the DSI TE trigger support. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move timing functionsTomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move check/set/get_timings() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move set/get_wss()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move set/get_wss() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move enable/disable/suspend/resumeTomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | | | Move enable/disable/suspend/resume from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move update() and sync()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | | | | | | | Move update() and sync() from omap_dss_device to omap_dss_driver. Also, update was hardcoded to use virtual channel 0. This patch adds a parameter that specifies the VC. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move set/get_update_mode()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move set/get_update_mode() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move enable/get_te()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move enable/get_te() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move get_recommended_bpp()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move get_recommended_bpp() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move get_resolution()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move get_resolution() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move enable/disable_channel to overlay managerTomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move enable/disable_channel() from omap_dss_device to overlay manager. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move wait_vsync()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move wait_vsync() from omap_dss_device to overlay manager. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move get/set_rotate()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move get/set_rotate() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move set/get_mirror()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move set/get_mirror() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move memory_read()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move memory_read() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: move run_test()Tomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | Move run_test() from omap_dss_device to omap_dss_driver. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: remove auto-update perf measurementTomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | | | | | Remove performance measurement for auto-update. Auto-update and thus performance measurement cannot be supported after the driver change where the control is moved to display drivers. This is part of a larger patch-set, which moves the control from omapdss driver to the display driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: change DSI bus_lock to semaphoreTomi Valkeinen2010-02-24
| | | | | | | | | | | | | | | | | | | | | | | | Physical DSI bus is protected by a mutex. This patch changed the mutex to a semaphore, so that we can lock and unlock the bus_lock from different threads. This is needed as the update process is started by user space program, and thus the lock is acquired in that context, but the lock can be released in different context, a work thread via irq. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: fix get_dsi/dispc_clk_source() usageTomi Valkeinen2010-02-23
| | | | | | | | | | | | | | After changing the selection of DSI and DISPC clock source the users of get_dsi/dispc_clk_source() functions were left unchanged. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: OMAPFB: fix cleanup on dssdev enable errorTomi Valkeinen2010-02-18
| | | | | | | | | | | | If enabling a dss device failed, omapfb didn't exit, leading to crash. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: OMAPFB: fix dssdev cleanup on errorTomi Valkeinen2010-02-18
| | | | | | | | | | | | | | If there was a dss device without a driver and thus omapfb probe failed, ref counts could be left to dss devices. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: fix driver probe error handlingTomi Valkeinen2010-02-18
| | | | | | | | | | | | If driver's probe failed, the uninit was not called. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: remove sub-panel systemTomi Valkeinen2010-02-18
| | | | | | | | | | | | | | | | | | | | | | | | The system to allow panel drivers to exists as attached to ctrl drivers did never work very well. It is not useed, and this patch removes it to make the driver cleaner. For now, controller drivers need to include also the panel driver code. In the future a proper mechanism for this should be developed, perhaps by creating busses for controllers. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: Check ctx loss count only when starting the first clockTomi Valkeinen2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | When OMAP PM layer is no-op/debug, the PM layer will increment context loss count with every call. This resulted DSS2 to restore context whenever a clock was enabled. This commit checks the context loss count only when the context actually could have been lost, ie. when enabling a clock when no clocks had been previously enabled. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: remove dsi_vc_print_status()Tomi Valkeinen2010-02-15
| | | | | | | | | | | | It was not used. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: configure all DSI VCsTomi Valkeinen2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of configuring only VC0 to be usable, configure all four VCs similarly. This is needed to utilize the other VCs. Setting the FIFO sizes evenly for all VCs, regardless of how many VCs are actually used, is not optimal. However, this affects only cases when larger amounts of data are written or read via L4, meaning that normal use cases are not affected. At some point this could be optimized better to suit different use cases. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: export dsi_vc_enable_hs()Tomi Valkeinen2010-02-15
| | | | | | | | | | | | | | Rename and export dsi_vc_enable_hs() so that the display drivers can control the mode of the DSI link. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: add helpers for DCS read/writeTomi Valkeinen2010-02-15
| | | | | | | | | | | | Add helper functions for most common DCS read and write operations. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: DSI: add dsi_bus_is_locked()Tomi Valkeinen2010-02-15
| | | | | | | | | | | | Helper function to clean up the checking of the bus lock. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
| * OMAP: DSS2: improve DSS clk src selectionTomi Valkeinen2010-02-15
| | | | | | | | | | | | | | | | | | | | | | | | dss_select_clk_source() was rather confusing. Selecting the source with enums is much clearer. The clk source selection is also stored into memory, so that we know what is the selected source, even when clocks are off. This is important during setup, as we need to what clocks to turn on before the clocks are turned on. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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