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authorRob Norris <[email protected]>2023-12-16 17:39:07 +1100
committerBrian Behlendorf <[email protected]>2023-12-21 11:03:08 -0800
commit18a9185165e2713e690e52347a37de1878e2a9fc (patch)
treedd9f4da2346d08614ed4ea597670b447ec771a21 /module/os/linux/zfs
parent3c13601a12b1739d09cec36eb5057b24141b4ae7 (diff)
linux 6.7 compat: handle superblock shrinker member change
In 6.7 the superblock shrinker member s_shrink has changed from being an embedded struct to a pointer. Detect this, and don't take a reference if it already is one. Signed-off-by: Rob Norris <[email protected]> Sponsored-by: https://github.com/sponsors/robn
Diffstat (limited to 'module/os/linux/zfs')
-rw-r--r--module/os/linux/zfs/zfs_vfsops.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/module/os/linux/zfs/zfs_vfsops.c b/module/os/linux/zfs/zfs_vfsops.c
index 2792bc027..2015c20d7 100644
--- a/module/os/linux/zfs/zfs_vfsops.c
+++ b/module/os/linux/zfs/zfs_vfsops.c
@@ -1240,12 +1240,18 @@ zfs_prune_aliases(zfsvfs_t *zfsvfs, unsigned long nr_to_scan)
* and inode caches. This can occur when the ARC needs to free meta data
* blocks but can't because they are all pinned by entries in these caches.
*/
+#if defined(HAVE_SUPER_BLOCK_S_SHRINK)
+#define S_SHRINK(sb) (&(sb)->s_shrink)
+#elif defined(HAVE_SUPER_BLOCK_S_SHRINK_PTR)
+#define S_SHRINK(sb) ((sb)->s_shrink)
+#endif
+
int
zfs_prune(struct super_block *sb, unsigned long nr_to_scan, int *objects)
{
zfsvfs_t *zfsvfs = sb->s_fs_info;
int error = 0;
- struct shrinker *shrinker = &sb->s_shrink;
+ struct shrinker *shrinker = S_SHRINK(sb);
struct shrink_control sc = {
.nr_to_scan = nr_to_scan,
.gfp_mask = GFP_KERNEL,
@@ -1257,7 +1263,7 @@ zfs_prune(struct super_block *sb, unsigned long nr_to_scan, int *objects)
#if defined(HAVE_SPLIT_SHRINKER_CALLBACK) && \
defined(SHRINK_CONTROL_HAS_NID) && \
defined(SHRINKER_NUMA_AWARE)
- if (sb->s_shrink.flags & SHRINKER_NUMA_AWARE) {
+ if (shrinker->flags & SHRINKER_NUMA_AWARE) {
*objects = 0;
for_each_online_node(sc.nid) {
*objects += (*shrinker->scan_objects)(shrinker, &sc);