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authorMatthew Wilcox (Oracle) <willy@infradead.org>2022-06-06 19:55:08 +0300
committerMatthew Wilcox (Oracle) <willy@infradead.org>2022-08-02 19:34:04 +0300
commit2ec810d59602f0e08847f986ef8e16469722496f (patch)
tree9df23e6ae72487ce2a84dbaf1a95160c0a5accba
parent541846502f4fe826cd7c16e4784695ac90736585 (diff)
downloadlinux-2ec810d59602f0e08847f986ef8e16469722496f.tar.xz
mm/migrate: Add filemap_migrate_folio()
There is nothing iomap-specific about iomap_migratepage(), and it fits a pattern used by several other filesystems, so move it to mm/migrate.c, convert it to be filemap_migrate_folio() and convert the iomap filesystems to use it. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <djwong@kernel.org>
-rw-r--r--fs/gfs2/aops.c2
-rw-r--r--fs/iomap/buffered-io.c25
-rw-r--r--fs/xfs/xfs_aops.c2
-rw-r--r--fs/zonefs/super.c2
-rw-r--r--include/linux/iomap.h6
-rw-r--r--include/linux/pagemap.h6
-rw-r--r--mm/migrate.c20
7 files changed, 29 insertions, 34 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 106e90a36583..57ff883d432c 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -774,7 +774,7 @@ static const struct address_space_operations gfs2_aops = {
.invalidate_folio = iomap_invalidate_folio,
.bmap = gfs2_bmap,
.direct_IO = noop_direct_IO,
- .migratepage = iomap_migrate_page,
+ .migrate_folio = filemap_migrate_folio,
.is_partially_uptodate = iomap_is_partially_uptodate,
.error_remove_page = generic_error_remove_page,
};
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 66278a14bfa7..5a91aa1db945 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -489,31 +489,6 @@ void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len)
}
EXPORT_SYMBOL_GPL(iomap_invalidate_folio);
-#ifdef CONFIG_MIGRATION
-int
-iomap_migrate_page(struct address_space *mapping, struct page *newpage,
- struct page *page, enum migrate_mode mode)
-{
- struct folio *folio = page_folio(page);
- struct folio *newfolio = page_folio(newpage);
- int ret;
-
- ret = folio_migrate_mapping(mapping, newfolio, folio, 0);
- if (ret != MIGRATEPAGE_SUCCESS)
- return ret;
-
- if (folio_test_private(folio))
- folio_attach_private(newfolio, folio_detach_private(folio));
-
- if (mode != MIGRATE_SYNC_NO_COPY)
- folio_migrate_copy(newfolio, folio);
- else
- folio_migrate_flags(newfolio, folio);
- return MIGRATEPAGE_SUCCESS;
-}
-EXPORT_SYMBOL_GPL(iomap_migrate_page);
-#endif /* CONFIG_MIGRATION */
-
static void
iomap_write_failed(struct inode *inode, loff_t pos, unsigned len)
{
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 8ec38b25187b..5d1a995b15f8 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -570,7 +570,7 @@ const struct address_space_operations xfs_address_space_operations = {
.invalidate_folio = iomap_invalidate_folio,
.bmap = xfs_vm_bmap,
.direct_IO = noop_direct_IO,
- .migratepage = iomap_migrate_page,
+ .migrate_folio = filemap_migrate_folio,
.is_partially_uptodate = iomap_is_partially_uptodate,
.error_remove_page = generic_error_remove_page,
.swap_activate = xfs_iomap_swapfile_activate,
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index 053299758deb..cc6d4cf580ac 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -271,7 +271,7 @@ static const struct address_space_operations zonefs_file_aops = {
.dirty_folio = filemap_dirty_folio,
.release_folio = iomap_release_folio,
.invalidate_folio = iomap_invalidate_folio,
- .migratepage = iomap_migrate_page,
+ .migrate_folio = filemap_migrate_folio,
.is_partially_uptodate = iomap_is_partially_uptodate,
.error_remove_page = generic_error_remove_page,
.direct_IO = noop_direct_IO,
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index e552097c67e0..758a1125e72f 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -231,12 +231,6 @@ void iomap_readahead(struct readahead_control *, const struct iomap_ops *ops);
bool iomap_is_partially_uptodate(struct folio *, size_t from, size_t count);
bool iomap_release_folio(struct folio *folio, gfp_t gfp_flags);
void iomap_invalidate_folio(struct folio *folio, size_t offset, size_t len);
-#ifdef CONFIG_MIGRATION
-int iomap_migrate_page(struct address_space *mapping, struct page *newpage,
- struct page *page, enum migrate_mode mode);
-#else
-#define iomap_migrate_page NULL
-#endif
int iomap_file_unshare(struct inode *inode, loff_t pos, loff_t len,
const struct iomap_ops *ops);
int iomap_zero_range(struct inode *inode, loff_t pos, loff_t len,
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 87d4ea571240..cc9adbaddb59 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -1078,6 +1078,12 @@ static inline int __must_check write_one_page(struct page *page)
int __set_page_dirty_nobuffers(struct page *page);
bool noop_dirty_folio(struct address_space *mapping, struct folio *folio);
+#ifdef CONFIG_MIGRATION
+int filemap_migrate_folio(struct address_space *mapping, struct folio *dst,
+ struct folio *src, enum migrate_mode mode);
+#else
+#define filemap_migrate_folio NULL
+#endif
void page_endio(struct page *page, bool is_write, int err);
void folio_end_private_2(struct folio *folio);
diff --git a/mm/migrate.c b/mm/migrate.c
index 77aeb7e12f62..4ed8f0d53c77 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -784,6 +784,26 @@ int buffer_migrate_folio_norefs(struct address_space *mapping,
}
#endif
+int filemap_migrate_folio(struct address_space *mapping,
+ struct folio *dst, struct folio *src, enum migrate_mode mode)
+{
+ int ret;
+
+ ret = folio_migrate_mapping(mapping, dst, src, 0);
+ if (ret != MIGRATEPAGE_SUCCESS)
+ return ret;
+
+ if (folio_get_private(src))
+ folio_attach_private(dst, folio_detach_private(src));
+
+ if (mode != MIGRATE_SYNC_NO_COPY)
+ folio_migrate_copy(dst, src);
+ else
+ folio_migrate_flags(dst, src);
+ return MIGRATEPAGE_SUCCESS;
+}
+EXPORT_SYMBOL_GPL(filemap_migrate_folio);
+
/*
* Writeback a folio to clean the dirty state
*/