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Merge patch series "iomap: cleanups ahead of adding fuse support"

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Darrick J. Wong <djwong@kernel.org> says:

In preparation for making fuse use the fs/iomap code for regular file
data IO, fix a few bugs in fuse and apply a couple of tweaks to iomap.
These patches can go in immediately.

* patches from https://lore.kernel.org/175803480273.966383.16598493355913871794.stgit@frogsfrogsfrogs:
  iomap: error out on file IO when there is no inline_data buffer
  iomap: trace iomap_zero_iter zeroing activities

Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner 2025-09-19 14:17:16 +02:00
commit c59c965292
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GPG Key ID: 91C61BC06578DCA2
3 changed files with 17 additions and 5 deletions
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18
fs/iomap/buffered-io.c
View File

@ -304,6 +304,9 @@ static int iomap_read_inline_data(const struct iomap_iter *iter,
size_t size = i_size_read(iter->inode) - iomap->offset;
size_t offset = offset_in_folio(folio, iomap->offset);
if (WARN_ON_ONCE(!iomap->inline_data))
return -EIO;
if (folio_test_uptodate(folio))
return 0;
@ -894,7 +897,7 @@ static bool __iomap_write_end(struct inode *inode, loff_t pos, size_t len,
return true;
}
static void iomap_write_end_inline(const struct iomap_iter *iter,
static bool iomap_write_end_inline(const struct iomap_iter *iter,
struct folio *folio, loff_t pos, size_t copied)
{
const struct iomap *iomap = &iter->iomap;
@ -903,12 +906,16 @@ static void iomap_write_end_inline(const struct iomap_iter *iter,
WARN_ON_ONCE(!folio_test_uptodate(folio));
BUG_ON(!iomap_inline_data_valid(iomap));
if (WARN_ON_ONCE(!iomap->inline_data))
return false;
flush_dcache_folio(folio);
addr = kmap_local_folio(folio, pos);
memcpy(iomap_inline_data(iomap, pos), addr, copied);
kunmap_local(addr);
mark_inode_dirty(iter->inode);
return true;
}
/*
@ -921,10 +928,8 @@ static bool iomap_write_end(struct iomap_iter *iter, size_t len, size_t copied,
const struct iomap *srcmap = iomap_iter_srcmap(iter);
loff_t pos = iter->pos;
if (srcmap->type == IOMAP_INLINE) {
iomap_write_end_inline(iter, folio, pos, copied);
return true;
}
if (srcmap->type == IOMAP_INLINE)
return iomap_write_end_inline(iter, folio, pos, copied);
if (srcmap->flags & IOMAP_F_BUFFER_HEAD) {
size_t bh_written;
@ -1396,6 +1401,9 @@ static int iomap_zero_iter(struct iomap_iter *iter, bool *did_zero,
/* warn about zeroing folios beyond eof that won't write back */
WARN_ON_ONCE(folio_pos(folio) > iter->inode->i_size);
trace_iomap_zero_iter(iter->inode, folio_pos(folio) + offset,
bytes);
folio_zero_range(folio, offset, bytes);
folio_mark_accessed(folio);

3
fs/iomap/direct-io.c
View File

@ -519,6 +519,9 @@ static int iomap_dio_inline_iter(struct iomap_iter *iomi, struct iomap_dio *dio)
loff_t pos = iomi->pos;
u64 copied;
if (WARN_ON_ONCE(!inline_data))
return -EIO;
if (WARN_ON_ONCE(!iomap_inline_data_valid(iomap)))
return -EIO;

1
fs/iomap/trace.h
View File

@ -84,6 +84,7 @@ DEFINE_RANGE_EVENT(iomap_release_folio);
DEFINE_RANGE_EVENT(iomap_invalidate_folio);
DEFINE_RANGE_EVENT(iomap_dio_invalidate_fail);
DEFINE_RANGE_EVENT(iomap_dio_rw_queued);
DEFINE_RANGE_EVENT(iomap_zero_iter);
#define IOMAP_TYPE_STRINGS \
{ IOMAP_HOLE, "HOLE" }, \