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iomap: Inline __iomap_zero_iter into its caller 

To make the merge easier, replicate the inlining of __iomap_zero_iter()
into iomap_zero_iter() that is currently in the nvdimm tree.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-12-20 19:03:46 -05:00
parent 6795801366
commit 4d7bd0eb72
1 changed files with 27 additions and 28 deletions
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55
fs/iomap/buffered-io.c
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@ -895,27 +895,6 @@ iomap_file_unshare(struct inode *inode, loff_t pos, loff_t len,
}
EXPORT_SYMBOL_GPL(iomap_file_unshare);
static s64 __iomap_zero_iter(struct iomap_iter *iter, loff_t pos, u64 length)
{
struct folio *folio;
int status;
size_t offset;
size_t bytes = min_t(u64, SIZE_MAX, length);
status = iomap_write_begin(iter, pos, bytes, &folio);
if (status)
return status;
offset = offset_in_folio(folio, pos);
if (bytes > folio_size(folio) - offset)
bytes = folio_size(folio) - offset;
folio_zero_range(folio, offset, bytes);
folio_mark_accessed(folio);
return iomap_write_end(iter, pos, bytes, bytes, folio);
}
static loff_t iomap_zero_iter(struct iomap_iter *iter, bool *did_zero)
{
struct iomap *iomap = &iter->iomap;
@ -929,14 +908,34 @@ static loff_t iomap_zero_iter(struct iomap_iter *iter, bool *did_zero)
return length;
do {
s64 bytes;
struct folio *folio;
int status;
size_t offset;
size_t bytes = min_t(u64, SIZE_MAX, length);
if (IS_DAX(iter->inode))
bytes = dax_iomap_zero(pos, length, iomap);
else
bytes = __iomap_zero_iter(iter, pos, length);
if (bytes < 0)
return bytes;
if (IS_DAX(iter->inode)) {
s64 tmp = dax_iomap_zero(pos, bytes, iomap);
if (tmp < 0)
return tmp;
bytes = tmp;
goto good;
}
status = iomap_write_begin(iter, pos, bytes, &folio);
if (status)
return status;
offset = offset_in_folio(folio, pos);
if (bytes > folio_size(folio) - offset)
bytes = folio_size(folio) - offset;
folio_zero_range(folio, offset, bytes);
folio_mark_accessed(folio);
bytes = iomap_write_end(iter, pos, bytes, bytes, folio);
good:
if (WARN_ON_ONCE(bytes == 0))
return -EIO;
pos += bytes;
length -= bytes;