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Akilesh Kailash 150bcbf7c6 libsnapshot: Flush data to scratch space only for overlapping regions 
When read-ahead thread caches the data from base device, flush the data
only if there are overlapping regions. If there is crash, subsequent
reboot will not recover the data from scratch space. Rather, data
will be re-constructed from base device.

Additionally, allow batch merge of blocks by the kernel even for
overlapping region given that we have the read-ahead thread
taking care of the overlapping blocks.

Bug: 183863613
Test: 1: Incremental OTA from build 7284758 to 7288239. Merge time
         reduces from ~6 minutes to ~2.5 minutes
      2: Reboot and crash kernel multiple times when merge was in
         progress
      3: Verify read-ahead thread re-constructs the data for overlapping
         region.
Signed-off-by: Akilesh Kailash <akailash@google.com>
Change-Id: I50e0d828f4fb36a23f0ca13b07a73229ba68874d
2021-04-30 06:46:47 +00:00
bootstat bootstat: Add Tj thermal shutdown 2021-03-17 08:56:06 +00:00
cli-test [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
code_coverage [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
cpio [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
debuggerd Merge "debuggerd: store commandline instead of process name." 2021-03-31 08:29:54 +00:00
diagnose_usb [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
fastboot Merge "Unable to mount filesystem in fastbootd mode on the user build." 2021-04-13 23:45:01 +00:00
fs_mgr libsnapshot: Flush data to scratch space only for overlapping regions 2021-04-30 06:46:47 +00:00
gatekeeperd Keystore 2.0: Remove references to Keystore 1.0 2021-03-18 15:32:19 -07:00
healthd [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
include Remove include/backtrace symlink. 2020-10-20 12:46:14 -07:00
init ueventd: Allow pattern matching to find external firmware handler 2021-04-16 13:35:10 -07:00
janitors Add the two best build system janitors. 2019-03-25 10:25:13 -07:00
libappfuse [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libasyncio [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libbinderwrapper [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libcrypto_utils [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libcutils Revert^2 "Expose AID_KEYSTORE" 2021-04-08 11:23:32 -07:00
libdiskconfig [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libgrallocusage [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libkeyutils Separate out libkeyutils and mini_keyctl. 2021-03-16 17:39:00 -07:00
libmodprobe libmodprobe: refactor blocklist functionality 2021-03-31 09:34:47 -07:00
libnetutils [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libpackagelistparser [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libprocessgroup Merge "task_profiles.json: use cgroup v2 uid/pid freezer" 2021-04-10 07:40:19 +00:00
libqtaguid [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsparse [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libstats [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-04-06 17:46:33 -07:00
libsuspend [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsync [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsystem [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libsysutils [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libusbhost [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
libutils Remove move dead code. 2021-04-15 15:18:54 -07:00
libvndksupport [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
llkd Merge "Add support for a hw_timeout_multiplier system property." 2021-03-17 18:18:51 +00:00
mini_keyctl Separate out libkeyutils and mini_keyctl. 2021-03-16 17:39:00 -07:00
property_service [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
qemu_pipe [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
reboot [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
rootdir Merge changes from topic "revert-1665499-revert-1660531-max-boot-level-crypto-KFMCEDKSIV-WPIHELCRFI" 2021-04-16 15:51:27 +00:00
run-as [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
sdcard [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
set-verity-state [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
shell_and_utilities [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
storaged [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
toolbox Update owners for modprobe.c 2021-04-01 12:42:21 -07:00
trusty Trusty: Move tipc fuzzer connection to end of iteration 2021-04-15 01:02:50 +00:00
usbd [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
watchdogd [LSC] Add LOCAL_LICENSE_KINDS to system/core 2021-02-19 12:59:05 -08:00
.clang-format Add a 2 width option of clang format. 2017-03-10 13:01:39 -08:00
.clang-format-2 Move clang-formats to build. 2019-01-18 14:26:33 -08:00
.clang-format-4 Move clang-formats to build. 2019-01-18 14:26:33 -08:00
.gitignore Ignore adb/*.pyc files 2015-08-11 12:59:58 -07:00
CleanSpec.mk snapshotctl don't auto-merge. 2020-03-03 13:19:49 -08:00
METADATA Add METADATA to system/core: Apache2+BSD=NOTICE 2020-04-29 13:16:41 -07:00
MODULE_LICENSE_APACHE2
OWNERS Remove baligh@ from owners. CodeShuffle done. 2020-10-17 00:28:10 +00:00
PREUPLOAD.cfg Add AOSP preupload hook. 2020-04-23 11:02:00 -07:00
TEST_MAPPING Clean up cc_test TEST_MAPPING after default update 2021-02-19 20:07:05 +00:00