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fat: remove ->writepage

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->writepage is a very inefficient method to write back data, and only
used through write_cache_pages or a a fallback when no ->migrate_folio
method is present.

Set ->migrate_folio to the generic buffer_head based helper, and remove
the ->writepage implementation.

Link: https://lkml.kernel.org/r/20221202102644.770505-3-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2022-12-02 11:26:39 +01:00 • committed by Andrew Morton
parent a117741221
commit ee649af0d9
1 changed files with 2 additions and 7 deletions
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9
fs/fat/inode.c
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@ -194,11 +194,6 @@ static int fat_get_block(struct inode *inode, sector_t iblock,
return 0; return 0;
} }
static int fat_writepage(struct page *page, struct writeback_control *wbc)
{
return block_write_full_page(page, fat_get_block, wbc);
}
static int fat_writepages(struct address_space *mapping, static int fat_writepages(struct address_space *mapping,
struct writeback_control *wbc) struct writeback_control *wbc)
{ {
@ -346,12 +341,12 @@ static const struct address_space_operations fat_aops = {
.invalidate_folio = block_invalidate_folio, .invalidate_folio = block_invalidate_folio,
.read_folio = fat_read_folio, .read_folio = fat_read_folio,
.readahead = fat_readahead, .readahead = fat_readahead,
.writepage = fat_writepage,
.writepages = fat_writepages, .writepages = fat_writepages,
.write_begin = fat_write_begin, .write_begin = fat_write_begin,
.write_end = fat_write_end, .write_end = fat_write_end,
.direct_IO = fat_direct_IO, .direct_IO = fat_direct_IO,
.bmap = _fat_bmap .bmap = _fat_bmap,
.migrate_folio = buffer_migrate_folio,
}; };
/* /*