AuxXxilium/linux_dsm_epyc7002
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6e88e672b6
linux_dsm_epyc7002/drivers/infiniband/hw/qib
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Davidlohr Bueso 3a2a1e9056 drivers/IB,qib: optimize mmap_sem usage 
The driver uses mmap_sem for both pinned_vm accounting and
get_user_pages(). Because rdma drivers might want to use gup_longterm() in
the future we still need some sort of mmap_sem serialization (as opposed
to removing it entirely by using gup_fast()). Now that pinned_vm is atomic
the writer lock can therefore be converted to reader.

This also fixes a bug that __qib_get_user_pages was not taking into
account the current value of pinned_vm.

Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-07 12:54:02 -07:00
..
Kconfig IB: Move PCI dependency from root KConfig to HW's KConfigs 2017-09-27 08:54:19 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qib_6120_regs.h
qib_7220_regs.h
qib_7220.h Merge branch 'timer_setup' into for-next 2017-10-18 13:12:09 -04:00
qib_7322_regs.h IB/qib: Mask hardware error during link reset 2010-07-06 14:13:20 -07:00
qib_common.h IB/hfi1, qib, rdmavt: Move AETH credit functions into rdmavt 2017-02-19 09:18:38 -05:00
qib_debugfs.c infiniband: qib: no need to check return value of debugfs_create functions 2019-01-24 09:22:29 -07:00
qib_debugfs.h IB/qib: Convert opcode counters to per-context 2013-06-21 17:19:50 -07:00
qib_diag.c RDMA: Use u64_to_user_ptr everywhere 2018-03-29 13:42:29 -06:00
qib_driver.c IB/{hfi1, qib}: Fix a concurrency issue with device name in logging 2018-01-05 13:34:55 -05:00
qib_eeprom.c IB/{hfi1, qib}: Fix a concurrency issue with device name in logging 2018-01-05 13:34:55 -05:00
qib_file_ops.c Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
qib_fs.c fs: constify tree_descr arrays passed to simple_fill_super() 2017-04-26 23:54:06 -04:00
qib_iba6120.c RDMA/qib: Remove all occurrences of BUG_ON() 2018-11-29 15:59:40 -07:00
qib_iba7220.c RDMA/qib: Remove all occurrences of BUG_ON() 2018-11-29 15:59:40 -07:00
qib_iba7322.c RDMA/qib: Remove all occurrences of BUG_ON() 2018-11-29 15:59:40 -07:00
qib_init.c RDMA/qib: Remove all occurrences of BUG_ON() 2018-11-29 15:59:40 -07:00
qib_intr.c IB/qib: Convert timers to use timer_setup() 2017-10-09 12:19:41 -04:00
qib_mad.c RDMA: Mark if destroy address handle is in a sleepable context 2018-12-19 16:28:03 -07:00
qib_mad.h IB/core: Add core header changes needed for OPA 2015-08-28 22:54:50 -04:00
qib_pcie.c IB/qib: fix spelling mistake "colescing" -> "coalescing" 2018-11-26 16:45:06 -07:00
qib_pio_copy.c
qib_qp.c IB/{hfi1, qib, rdmavt}: Schedule multi RC/UC packets instead of posting 2018-09-11 09:55:02 -06:00
qib_qsfp.c IB/qib: Remove empty function 2017-01-24 16:20:37 -05:00
qib_qsfp.h IB/qib: Remove empty function 2017-01-24 16:20:37 -05:00
qib_rc.c IB/{hfi1, qib, rdmavt}: Move send completion logic to rdmavt 2018-10-03 16:38:28 -06:00
qib_ruc.c IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt 2018-10-03 16:38:28 -06:00
qib_sd7220.c Merge branch 'timer_setup' into for-next 2017-10-18 13:12:09 -04:00
qib_sdma.c IB/{hfi1, qib, rvt} Cleanup open coded sge usage 2019-01-30 14:22:32 -05:00
qib_sysfs.c RDMA: Introduce and use rdma_device_to_ibdev() 2019-01-14 13:12:03 -07:00
qib_twsi.c IB/qib: Add blank line after declaration 2015-02-20 09:04:12 -08:00
qib_tx.c Merge branch 'timer_setup' into for-next 2017-10-18 13:12:09 -04:00
qib_uc.c IB/{hfi1, qib, rdmavt}: Move send completion logic to rdmavt 2018-10-03 16:38:28 -06:00
qib_ud.c Linux 5.0-rc5 2019-02-04 14:53:42 -07:00
qib_user_pages.c drivers/IB,qib: optimize mmap_sem usage 2019-02-07 12:54:02 -07:00
qib_user_sdma.c RDMA/qib: Remove all occurrences of BUG_ON() 2018-11-29 15:59:40 -07:00
qib_user_sdma.h
qib_verbs.c IB/{hfi1,qib}: Cleanup open coded sge sizing 2019-01-30 14:22:32 -05:00
qib_verbs.h IB/{hfi1, qib, rdmavt}: Move send completion logic to rdmavt 2018-10-03 16:38:28 -06:00
qib_wc_ppc64.c
qib_wc_x86_64.c IB/qib: fix test of unsigned variable 2015-05-12 13:55:41 -04:00
qib.h RDMA/drivers: Use core provided API for registering device attributes 2018-10-17 03:45:01 -06:00