linux-toradex.git/mm/folio-compat.c, branch v6.0-rc2

mm/folio-compat: Remove migration compatibility functions

2022-08-02T16:34:04+00:00

migrate_page_move_mapping(), migrate_page_copy() and migrate_page_states()
are all now unused after converting all the filesystems from
aops->migratepage() to aops->migrate_folio().

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig

fs: Remove aop flags parameter from grab_cache_page_write_begin()

2022-05-08T18:28:19+00:00

There are no more aop flags left, so remove the parameter.

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig

fs: Remove AOP_FLAG_NOFS

2022-05-08T18:28:19+00:00

With all users of this flag gone, we can stop testing whether it's set.

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig

mm/rmap: Convert rmap_walk() to take a folio

2022-03-21T17:01:35+00:00

This ripples all the way through to every calling and called function
from rmap.

Signed-off-by: Matthew Wilcox (Oracle)

mm/rmap: Turn page_lock_anon_vma_read() into folio_lock_anon_vma_read()

2022-03-21T17:01:35+00:00

Add back page_lock_anon_vma_read() as a wrapper.  This saves a few calls
to compound_head().  If any callers were passing a tail page before,
this would have failed to lock the anon VMA as page->mapping is not
valid for tail pages.

Signed-off-by: Matthew Wilcox (Oracle)

mm: Turn putback_lru_page() into folio_putback_lru()

2022-03-21T16:59:01+00:00

Add a putback_lru_page() wrapper.  Removes a couple of compound_head()
calls.

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig

mm: Turn isolate_lru_page() into folio_isolate_lru()

2022-03-21T16:56:36+00:00

Add isolate_lru_page() as a wrapper around isolate_lru_folio().
TestClearPageLRU() would have always failed on a tail page, so
returning -EBUSY is the same behaviour.

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig 
Reviewed-by: John Hubbard 
Reviewed-by: Jason Gunthorpe 
Reviewed-by: William Kucharski

filemap: Add filemap_release_folio()

2022-01-04T18:15:34+00:00

Reimplement try_to_release_page() as a wrapper around
filemap_release_folio().

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig 
Reviewed-by: William Kucharski

filemap: Add filemap_remove_folio and __filemap_remove_folio

2022-01-04T18:15:33+00:00

Reimplement __delete_from_page_cache() as a wrapper around
__filemap_remove_folio() and delete_from_page_cache() as a wrapper
around filemap_remove_folio().  Remove the EXPORT_SYMBOL as
delete_from_page_cache() was not used by any in-tree modules.
Convert page_cache_free_page() into filemap_free_folio().

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: Christoph Hellwig 
Reviewed-by: William Kucharski

mm/filemap: Add FGP_STABLE

2021-10-18T11:49:41+00:00

Allow filemap_get_folio() to wait for writeback to complete (if the
filesystem wants that behaviour).  This is the folio equivalent of
grab_cache_page_write_begin(), which is moved into the folio-compat
file as a reminder to migrate all the code using it.  This paves the
way for getting rid of AOP_FLAG_NOFS once grab_cache_page_write_begin()
is removed.

Kernel grows by 11 bytes.  filemap_get_folio() grows by 33 bytes but
grab_cache_page_write_begin() shrinks by 22 bytes to make up for it.

Signed-off-by: Matthew Wilcox (Oracle) 
Reviewed-by: David Howells 
Acked-by: Vlastimil Babka