The patch titled
direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write fix fix
has been added to the -mm tree. Its filename is
direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write-fix-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write fix fix
From: Jeff Moyer <jmoyer@xxxxxxxxxx>
Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
Cc: Zach Brown <zach.brown@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/filemap.c | 11 ++++++++++-
1 files changed, 10 insertions(+), 1 deletion(-)
diff -puN mm/filemap.c~direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write-fix-fix mm/filemap.c
--- a/mm/filemap.c~direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write-fix-fix
+++ a/mm/filemap.c
@@ -2291,8 +2291,17 @@ __generic_file_aio_write_nolock(struct k
written_buffered = generic_file_buffered_write(iocb, iov,
nr_segs, pos, ppos, count,
written);
- if (written_buffered < 0 || written_buffered == written)
+ /*
+ * If generic_file_buffered_write() retuned a synchronous error
+ * then we want to return the number of bytes which were
+ * direct-written, or the error code if that was zero. Note
+ * that this differs from normal direct-io semantics, which
+ * will return -EFOO even if some bytes were written.
+ */
+ if (written_buffered < 0) {
+ err = written_buffered;
goto out;
+ }
/*
* We need to ensure that the page cache pages are written to
_
Patches currently in -mm which might be from jmoyer@xxxxxxxxxx are
direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write.patch
direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write-fix.patch
direct-io-sync-and-invalidate-file-region-when-falling-back-to-buffered-write-fix-fix.patch
dio-centralize-completion-in-dio_complete.patch
dio-call-blk_run_address_space-once-per-op.patch
dio-formalize-bio-counters-as-a-dio-reference-count.patch
dio-remove-duplicate-bio-wait-code.patch
dio-only-call-aio_complete-after-returning-eiocbqueued.patch
-
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