diff options
| author | chrisrd <[email protected]> | 2018-02-24 03:50:06 +1100 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2018-02-23 08:50:06 -0800 |
| commit | e9a77290081b578144e9a911ad734f67274df82f (patch) | |
| tree | 29036268b80f1a2695867d079e2a4facf916a616 /config/kernel.m4 | |
| parent | 7088545d0166aa05b2c783f18aa821d95a1f023d (diff) | |
Fix free memory calculation on v3.14+
Provide infrastructure to auto-configure to enum and API changes in the
global page stats used for our free memory calculations.
arc_free_memory has been broken since an API change in Linux v3.14:
2016-07-28 v4.8 599d0c95 mm, vmscan: move LRU lists to node
2016-07-28 v4.8 75ef7184 mm, vmstat: add infrastructure for per-node
vmstats
These commits moved some of global_page_state() into
global_node_page_state(). The API change was particularly egregious as,
instead of breaking the old code, it silently did the wrong thing and we
continued using global_page_state() where we should have been using
global_node_page_state(), thus indexing into the wrong array via
NR_SLAB_RECLAIMABLE et al.
There have been further API changes along the way:
2017-07-06 v4.13 385386cf mm: vmstat: move slab statistics from zone to
node counters
2017-09-06 v4.14 c41f012a mm: rename global_page_state to
global_zone_page_state
...and various (incomplete, as it turns out) attempts to accomodate
these changes in ZoL:
2017-08-24 2209e409 Linux 4.8+ compatibility fix for vm stats
2017-09-16 787acae0 Linux 3.14 compat: IO acct, global_page_state, etc
2017-09-19 661907e6 Linux 4.14 compat: IO acct, global_page_state, etc
The config infrastructure provided here resolves these issues going back
to the original API change in v3.14 and is robust against further Linux
changes in this area.
Reviewed-by: Giuseppe Di Natale <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Signed-off-by: Chris Dunlop <[email protected]>
Closes #7170
Diffstat (limited to 'config/kernel.m4')
| -rw-r--r-- | config/kernel.m4 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/config/kernel.m4 b/config/kernel.m4 index 9b11dc179..a1bbbc2de 100644 --- a/config/kernel.m4 +++ b/config/kernel.m4 @@ -123,7 +123,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [ ZFS_AC_KERNEL_RENAME_WANTS_FLAGS ZFS_AC_KERNEL_HAVE_GENERIC_SETXATTR ZFS_AC_KERNEL_CURRENT_TIME - ZFS_AC_KERNEL_VM_NODE_STAT + ZFS_AC_KERNEL_GLOBAL_PAGE_STATE ZFS_AC_KERNEL_ACL_HAS_REFCOUNT AS_IF([test "$LINUX_OBJ" != "$LINUX"], [ |