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authorAmit Pundir <amit.pundir@linaro.org>2018-06-11 16:48:21 +0530
committerAmit Pundir <amit.pundir@linaro.org>2018-06-11 16:48:21 +0530
commit3d5962249d52f8f5454cf9fab288a507cc3d3d07 (patch)
tree2f0d3c5afee4cc2478c7da3540adebadbb102ef9 /Documentation/device-mapper
parent6dd708f898dfef66f735e52484c7690d356db4dd (diff)
parenta794bca783fd36c5d3da00fc99a54deac92d4702 (diff)
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
* linux-linaro-lsk-v4.4: (361 commits) Linux 4.4.135 Revert "vti4: Don't override MTU passed on link creation via IFLA_MTU" Linux 4.4.134 s390/ftrace: use expoline for indirect branches kdb: make "mdr" command repeat Bluetooth: btusb: Add device ID for RTL8822BE ASoC: samsung: i2s: Ensure the RCLK rate is properly determined regulator: of: Add a missing 'of_node_put()' in an error handling path of 'of_regulator_match()' scsi: lpfc: Fix frequency of Release WQE CQEs scsi: lpfc: Fix soft lockup in lpfc worker thread during LIP testing scsi: lpfc: Fix issue_lip if link is disabled netlabel: If PF_INET6, check sk_buff ip header version selftests/net: fixes psock_fanout eBPF test case perf report: Fix memory corruption in --branch-history mode --branch-history perf tests: Use arch__compare_symbol_names to compare symbols x86/apic: Set up through-local-APIC mode on the boot CPU if 'noapic' specified drm/rockchip: Respect page offset for PRIME mmap calls MIPS: Octeon: Fix logging messages with spurious periods after newlines audit: return on memory error to avoid null pointer dereference crypto: sunxi-ss - Add MODULE_ALIAS to sun4i-ss ... Conflicts: arch/arm64/include/asm/assembler.h Rebase LTS commit 348f043ab6c6 ("arm64: Add work around for Arm Cortex-A55 Erratum 1024718"). fs/f2fs/namei.c Rebase LTS commit 03bb7588942a ("do d_instantiate/unlock_new_inode combinations safely") fs/proc/base.c Trivial typo. kernel/auditsc.c Rebase LTS commit 9bb698bedebf ("audit: move calcs after alloc and check when logging set loginuid"). kernel/time/timekeeping.c Rebase changes from AOSP commit 28850c79d071 ("BACKPORT: time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting"), and 1d35c0438678 ("BACKPORT: time: Clean up CLOCK_MONOTONIC_RAW time handling"). Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Diffstat (limited to 'Documentation/device-mapper')
-rw-r--r--Documentation/device-mapper/thin-provisioning.txt8
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/device-mapper/thin-provisioning.txt b/Documentation/device-mapper/thin-provisioning.txt
index 1699a55b7b70..ef639960b272 100644
--- a/Documentation/device-mapper/thin-provisioning.txt
+++ b/Documentation/device-mapper/thin-provisioning.txt
@@ -112,9 +112,11 @@ $low_water_mark is expressed in blocks of size $data_block_size. If
free space on the data device drops below this level then a dm event
will be triggered which a userspace daemon should catch allowing it to
extend the pool device. Only one such event will be sent.
-Resuming a device with a new table itself triggers an event so the
-userspace daemon can use this to detect a situation where a new table
-already exceeds the threshold.
+
+No special event is triggered if a just resumed device's free space is below
+the low water mark. However, resuming a device always triggers an
+event; a userspace daemon should verify that free space exceeds the low
+water mark when handling this event.
A low water mark for the metadata device is maintained in the kernel and
will trigger a dm event if free space on the metadata device drops below