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filemap: Handle AOP_TRUNCATED_PAGE in do_read_cache_folio()

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If the call to filler() returns AOP_TRUNCATED_PAGE, we need to
retry the page cache lookup.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-05-12 17:47:06 -04:00
parent 9bc3e86938
commit 1dfa24a4bf
1 changed files with 3 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

4
mm/filemap.c
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@ -3524,8 +3524,10 @@ static struct folio *do_read_cache_folio(struct address_space *mapping,
folio_clear_error(folio);
filler:
err = filler(file, folio);
if (err < 0) {
if (err) {
folio_put(folio);
if (err == AOP_TRUNCATED_PAGE)
goto repeat;
return ERR_PTR(err);
}