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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2014-05-15 05:06:42 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-12-17 08:26:51 -0500 |
| commit | 50062175ffc844b8ff9664024c6416a37ad63c77 (patch) | |
| tree | acde5ad578854a34a31a97eea496cfd5e6e155ef /mm | |
| parent | new helper: iter_is_iovec() (diff) | |
| download | linux-dev-50062175ffc844b8ff9664024c6416a37ad63c77.tar.xz linux-dev-50062175ffc844b8ff9664024c6416a37ad63c77.zip | |
vm_area_operations: kill ->migrate()
the only instance this method has ever grown was one in kernfs -
one that call ->migrate() of another vm_ops if it exists.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/mempolicy.c | 5 | ||||
| -rw-r--r-- | mm/migrate.c | 21 |
2 files changed, 0 insertions, 26 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index e58725aff7e9..c1b273f1837b 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1047,10 +1047,6 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from, down_read(&mm->mmap_sem); - err = migrate_vmas(mm, from, to, flags); - if (err) - goto out; - /* * Find a 'source' bit set in 'tmp' whose corresponding 'dest' * bit in 'to' is not also set in 'tmp'. Clear the found 'source' @@ -1130,7 +1126,6 @@ int do_migrate_pages(struct mm_struct *mm, const nodemask_t *from, if (err < 0) break; } -out: up_read(&mm->mmap_sem); if (err < 0) return err; diff --git a/mm/migrate.c b/mm/migrate.c index b1d02127e1be..344cdf692fc8 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1536,27 +1536,6 @@ out: return err; } -/* - * Call migration functions in the vma_ops that may prepare - * memory in a vm for migration. migration functions may perform - * the migration for vmas that do not have an underlying page struct. - */ -int migrate_vmas(struct mm_struct *mm, const nodemask_t *to, - const nodemask_t *from, unsigned long flags) -{ - struct vm_area_struct *vma; - int err = 0; - - for (vma = mm->mmap; vma && !err; vma = vma->vm_next) { - if (vma->vm_ops && vma->vm_ops->migrate) { - err = vma->vm_ops->migrate(vma, to, from, flags); - if (err) - break; - } - } - return err; -} - #ifdef CONFIG_NUMA_BALANCING /* * Returns true if this is a safe migration target node for misplaced NUMA |