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nilfs2: convert metadata aops from writepage to writepages

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By implementing ->writepages instead of ->writepage, we remove a layer of
indirect function calls from the writeback path and the last use of struct
page in nilfs2.

[konishi.ryusuke@gmail.com: fixed panic by using buffer_migrate_folio_norefs]
Link: https://lkml.kernel.org/r/20241002150036.1339475-5-willy@infradead.org
Link: https://lkml.kernel.org/r/20241024092602.13395-13-konishi.ryusuke@gmail.com
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2024-10-24 18:25:46 +09:00 • committed by Andrew Morton
parent b18d78dec3
commit 013a07052a
1 changed files with 15 additions and 4 deletions
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19
fs/nilfs2/mdt.c
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@ -399,10 +399,9 @@ int nilfs_mdt_fetch_dirty(struct inode *inode)
return test_bit(NILFS_I_DIRTY, &ii->i_state);
}
static int
nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
static int nilfs_mdt_write_folio(struct folio *folio,
struct writeback_control *wbc)
{
struct folio *folio = page_folio(page);
struct inode *inode = folio->mapping->host;
struct super_block *sb;
int err = 0;
@ -435,11 +434,23 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
return err;
}
static int nilfs_mdt_writeback(struct address_space *mapping,
struct writeback_control *wbc)
{
struct folio *folio = NULL;
int error;
while ((folio = writeback_iter(mapping, wbc, folio, &error)))
error = nilfs_mdt_write_folio(folio, wbc);
return error;
}
static const struct address_space_operations def_mdt_aops = {
.dirty_folio = block_dirty_folio,
.invalidate_folio = block_invalidate_folio,
.writepage = nilfs_mdt_write_page,
.writepages = nilfs_mdt_writeback,
.migrate_folio = buffer_migrate_folio_norefs,
};
static const struct inode_operations def_mdt_iops;