zfs/include
Brian Atkinson e4d3d77684
Fixing gang ABD child removal race condition
On linux the list debug code has been setting off a failure when
checking that the node->next->prev value is pointing back at the node.
At times this check evaluates to 0xdead. When removing a child from a
gang ABD we must acquire the child's abd_mtx to make sure that the
same ABD is not being added to another gang ABD while it is being
removed from a gang ABD. This fixes a race condition when checking
if an ABDs link is already active and part of another gang ABD before
adding it to a gang.

Added additional debug code for the gang ABD in abd_verify() to make
sure each child ABD has active links. Also check to make sure another
gang ABD is not added to a gang ABD.

Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Signed-off-by: Brian Atkinson <batkinson@lanl.gov>
Closes #10511
2020-07-14 11:04:35 -07:00
..
os Fixing gang ABD child removal race condition 2020-07-14 11:04:35 -07:00
sys Remove dependency on sharetab file and refactor sharing logic 2020-07-13 09:19:18 -07:00
.gitignore OpenZFS restructuring - move platform specific sources 2019-09-06 11:26:26 -07:00
Makefile.am Avoid installing kernel headers on FreeBSD 2020-06-27 17:40:14 -07:00
cityhash.h Compile cityhash code into libzfs 2020-03-27 09:11:22 -07:00
libnvpair.h Add JSON output support to channel programs 2018-03-19 12:40:58 -07:00
libuutil.h Correct cppcheck errors 2017-09-19 12:17:29 -07:00
libuutil_common.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libuutil_impl.h Support custom build directories and move includes 2010-09-08 12:38:56 -07:00
libzfs.h Remove dependency on sharetab file and refactor sharing logic 2020-07-13 09:19:18 -07:00
libzfs_core.h Add support for boot environment data to be stored in the label 2020-05-07 09:36:33 -07:00
libzfs_impl.h Remove dependency on sharetab file and refactor sharing logic 2020-07-13 09:19:18 -07:00
libzutil.h Add prototypes 2020-06-18 12:21:32 -07:00
thread_pool.h Add libtpool (thread pools) 2017-08-09 15:31:08 -07:00
zfeature_common.h Add device rebuild feature 2020-07-03 11:05:50 -07:00
zfs_comutil.h Fix "zpool add -n" for dedup, special and log devices 2020-01-06 15:40:06 -08:00
zfs_deleg.h Remove code for zfs remap 2019-06-24 16:44:01 -07:00
zfs_fletcher.h Add AVX512BW variant of fletcher 2019-10-30 12:26:14 -07:00
zfs_namecheck.h Implement bookmark copying 2020-02-11 13:19:12 -08:00
zfs_prop.h Add zfs module feature and property info to sysfs 2018-09-02 12:09:53 -07:00