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* ARM: dts: r8a7790: Add SCIF2 device nodeGeert Uytterhoeven2016-04-19
| | | | | Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: dts: r8a7790: Add SCIF2 clockGeert Uytterhoeven2016-04-19
| | | | | | | Based on Rev. 2.00 of the R-Car Gen2 datasheet. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
* ARM: dts: r8a7791: use fallback jpu compatibility stringSimon Horman2016-04-19
| | | | | | | Use recently added fallback compatibility string in r8a7791 device tree. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7790: use fallback jpu compatibility stringSimon Horman2016-04-19
| | | | | | | Use recently added fallback compatibility string in r8a7790 device trees. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: sh73a0: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. The clock-output-names property is left in place for the zb_clk which is thus treated as a special case as the MSTP clock driver (clk-mstp.c) explicitly looks for a clock with node name zb_clk for the r8a73a4 and sh73a0 SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a73a4: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. The clock-output-names property is left in place for the zb_clk which is thus treated as a special case as the MSTP clock driver (clk-mstp.c) explicitly looks for a clock with node name zb_clk for the r8a73a4 and sh73a0 SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: lager: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: porter: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: koelsch: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: gose: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7794: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7793: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7791: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7779: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7778: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7740: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r7s72100: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary update the node names. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: r8a7790: Remove unnecessary clock-output-names propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | | | | | * Fixed rate and fixed factor clocks do not require an clock-output-names property. * Since 07705583e920fef6 ("clk: shmobile: div6: Make clock-output-names optional") Renesas div6 clocks do not require a clock-output-names property. In the above cases there is only one clock output and its name is taken from that of the clock node. Accordingly, remove the unnecessary clock-output-names properties and as necessary the nodes. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: kzm9d: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the kzm9d device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: kzm9g: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the kzm9g device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: silk: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the silk device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: alt: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the alt device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: gose: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the gose device tree to use the generic Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: porter: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the porter device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: koelsch: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the koelsch device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: marzen: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the marzen device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: bockw: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the bockw device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: armadillo800eva: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the armadillo800eva device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: ape6evm: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the ape6evm device tree to use the generic properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
* ARM: dts: lager: use generic pinctrl propertiesSimon Horman2016-03-27
| | | | | | | | | | | | | Since 16ccaf5bb5a5 ("pinctrl: sh-pfc: Accept standard function, pins and groups properties") renesas pfc drivers accept generic "function", "pins" and "groups" properties. This patch updates the lager device tree to use the generic rather than renesas-specific properties. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Linux 4.6-rc1Linus Torvalds2016-03-26
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* Merge branch 'for-linus' of ↵Linus Torvalds2016-03-26
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "There is quite a bit here, including some overdue refactoring and cleanup on the mon_client and osd_client code from Ilya, scattered writeback support for CephFS and a pile of bug fixes from Zheng, and a few random cleanups and fixes from others" [ I already decided not to pull this because of it having been rebased recently, but ended up changing my mind after all. Next time I'll really hold people to it. Oh well. - Linus ] * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (34 commits) libceph: use KMEM_CACHE macro ceph: use kmem_cache_zalloc rbd: use KMEM_CACHE macro ceph: use lookup request to revalidate dentry ceph: kill ceph_get_dentry_parent_inode() ceph: fix security xattr deadlock ceph: don't request vxattrs from MDS ceph: fix mounting same fs multiple times ceph: remove unnecessary NULL check ceph: avoid updating directory inode's i_size accidentally ceph: fix race during filling readdir cache libceph: use sizeof_footer() more ceph: kill ceph_empty_snapc ceph: fix a wrong comparison ceph: replace CURRENT_TIME by current_fs_time() ceph: scattered page writeback libceph: add helper that duplicates last extent operation libceph: enable large, variable-sized OSD requests libceph: osdc->req_mempool should be backed by a slab pool libceph: make r_request msg_size calculation clearer ...
| * libceph: use KMEM_CACHE macroGeliang Tang2016-03-25
| | | | | | | | | | | | | | Use KMEM_CACHE() instead of kmem_cache_create() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: use kmem_cache_zallocGeliang Tang2016-03-25
| | | | | | | | | | | | | | Use kmem_cache_zalloc() instead of kmem_cache_alloc() with flag GFP_ZERO. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * rbd: use KMEM_CACHE macroGeliang Tang2016-03-25
| | | | | | | | | | | | | | Use KMEM_CACHE() instead of kmem_cache_create() to simplify the code. Signed-off-by: Geliang Tang <geliangtang@163.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * ceph: use lookup request to revalidate dentryYan, Zheng2016-03-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If dentry has no lease, ceph_d_revalidate() previously return 0. This causes VFS to invalidate the dentry and create a new dentry for later lookup. Invalidating a dentry also detach any underneath mount points. So mount point inside cephfs can disapear mystically (even the mount point is not modified by other hosts). The fix is using lookup request to revalidate dentry without lease. This can partly solve the mount points disapear issue (as long as the mount point is not modified by other hosts) Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: kill ceph_get_dentry_parent_inode()Yan, Zheng2016-03-25
| | | | | | | | | | | | use vfs helper dget_parent() instead Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: fix security xattr deadlockYan, Zheng2016-03-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When security is enabled, security module can call filesystem's getxattr/setxattr callbacks during d_instantiate(). For cephfs, d_instantiate() is usually called by MDS' dispatch thread, while handling MDS reply. If the MDS reply does not include xattrs and corresponding caps, getxattr/setxattr need to send a new request to MDS and waits for the reply. This makes MDS' dispatch sleep, nobody handles later MDS replies. The fix is make sure lookup/atomic_open reply include xattrs and corresponding caps. So getxattr can be handled by cached xattrs. This requires some modification to both MDS and request message. (Client tells MDS what caps it wants; MDS encodes proper caps in the reply) Smack security module may call setxattr during d_instantiate(). Unlike getxattr, we can't force MDS to issue CEPH_CAP_XATTR_EXCL to us. So just make setxattr return error when called by MDS' dispatch thread. Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: don't request vxattrs from MDSYan, Zheng2016-03-25
| | | | | | | | | | | | It's uselese because MDS reply does not carry any vxattr. Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: fix mounting same fs multiple timesYan, Zheng2016-03-25
| | | | | | | | | | | | | | Now __ceph_open_session() only accepts closed client. An opened client will tigger BUG_ON(). Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: remove unnecessary NULL checkYan, Zheng2016-03-25
| | | | | | | | | | | | | | | | If page->mapping is NULL, releasepage() callback does not get called. Remove the unnecessary NULL check to make static code analysis tool happy Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: avoid updating directory inode's i_size accidentallyYan, Zheng2016-03-25
| | | | | | | | | | | | Directory inode's i_size is used by readdir cache. Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: fix race during filling readdir cacheYan, Zheng2016-03-25
| | | | | | | | | | | | | | | | | | Readdir cache uses page cache to save dentry pointers. When adding dentry pointers to middle of a page, we need to make sure the page already exists. Otherwise the beginning part of the page will be invalid pointers. Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * libceph: use sizeof_footer() moreIlya Dryomov2016-03-25
| | | | | | | | | | | | | | | | | | Don't open-code sizeof_footer() in read_partial_message() and ceph_msg_revoke(). Also, after switching to sizeof_footer(), it's now possible to use con_out_kvec_add() in prepare_write_message_footer(). Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Alex Elder <elder@linaro.org>
| * ceph: kill ceph_empty_snapcIlya Dryomov2016-03-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ceph_empty_snapc->num_snaps == 0 at all times. Passing such a snapc to ceph_osdc_alloc_request() (possibly through ceph_osdc_new_request()) is equivalent to passing NULL, as ceph_osdc_alloc_request() uses it only for sizing the request message. Further, in all four cases the subsequent ceph_osdc_build_request() is passed NULL for snapc, meaning that 0 is encoded for seq and num_snaps and making ceph_empty_snapc entirely useless. The two cases where it actually mattered were removed in commits 860560904962 ("ceph: avoid sending unnessesary FLUSHSNAP message") and 23078637e054 ("ceph: fix queuing inode to mdsdir's snaprealm"). Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Yan, Zheng <zyan@redhat.com>
| * ceph: fix a wrong comparisonAnton Protopopov2016-03-25
| | | | | | | | | | | | | | | | A negative value rc compared to the positive value ENOENT in the finish_read() function. Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com> Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: replace CURRENT_TIME by current_fs_time()Deepa Dinamani2016-03-25
| | | | | | | | | | | | | | | | | | CURRENT_TIME macro is not appropriate for filesystems as it doesn't use the right granularity for filesystem timestamps. Use current_fs_time() instead. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * ceph: scattered page writebackYan, Zheng2016-03-25
| | | | | | | | | | | | | | | | | | | | This patch makes ceph_writepages_start() try using single OSD request to write all dirty pages within a strip unit. When a nonconsecutive dirty page is found, ceph_writepages_start() tries starting a new write operation to existing OSD request. If it succeeds, it uses the new operation to writeback the dirty page. Signed-off-by: Yan, Zheng <zyan@redhat.com>
| * libceph: add helper that duplicates last extent operationYan, Zheng2016-03-25
| | | | | | | | | | | | | | | | | | | | This helper duplicates last extent operation in OSD request, then adjusts the new extent operation's offset and length. The helper is for scatterd page writeback, which adds nonconsecutive dirty pages to single OSD request. Signed-off-by: Yan, Zheng <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| * libceph: enable large, variable-sized OSD requestsIlya Dryomov2016-03-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Turn r_ops into a flexible array member to enable large, consisting of up to 16 ops, OSD requests. The use case is scattered writeback in cephfs and, as far as the kernel client is concerned, 16 is just a made up number. r_ops had size 3 for copyup+hint+write, but copyup is really a special case - it can only happen once. ceph_osd_request_cache is therefore stuffed with num_ops=2 requests, anything bigger than that is allocated with kmalloc(). req_mempool is backed by ceph_osd_request_cache, which means either num_ops=1 or num_ops=2 for use_mempool=true - all existing users (ceph_writepages_start(), ceph_osdc_writepages()) are fine with that. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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