[PATCH v1 11/11] fs: aio: add explicit check for large folio in aio_migrate_folio()
Kefeng Wang <[email protected]>
| Newsgroups | gmane.linux.kernel.aio.general,gmane.linux.kernel.mm,gmane.linux.file-systems |
|---|---|
| Message-ID | <[email protected]> |
Since large folio copy could spend lots of time and it is involved with a cond_resched(), the aio couldn't support migrate large folio as it takes a spin lock when folio copy, add explicit check for large folio and return err directly. Signed-off-by: Kefeng Wang <[email protected]> --- fs/aio.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/aio.c b/fs/aio.c index 9783bb5d81e7..0391ef58c564 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -411,6 +411,10 @@ static int aio_migrate_folio(struct address_space *mapping, struct folio *dst, pgoff_t idx; int rc = 0; + /* Large folios aren't supported */ + if (folio_test_large(src)) + return -EINVAL; + /* mapping->i_private_lock here protects against the kioctx teardown. */ spin_lock(&mapping->i_private_lock); ctx = mapping->i_private_data; -- 2.27.0 -- To unsubscribe, send a message with 'unsubscribe linux-aio' in the body to [email protected]. For more info on Linux AIO, see: http://www.kvack.org/aio/ Don't email: <a href=mailto:"[email protected]">[email protected]</a>