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-rw-r--r--fs/direct-io.c32
1 files changed, 14 insertions, 18 deletions
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 38484b08a39a..7ab90f5081ee 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -37,6 +37,7 @@
#include <linux/uio.h>
#include <linux/atomic.h>
#include <linux/prefetch.h>
+#include <linux/aio.h>
/*
* How many user pages to map in one call to get_user_pages(). This determines
@@ -672,12 +673,6 @@ static inline int dio_send_cur_page(struct dio *dio, struct dio_submit *sdio,
if (sdio->final_block_in_bio != sdio->cur_page_block ||
cur_offset != bio_next_offset)
dio_bio_submit(dio, sdio);
- /*
- * Submit now if the underlying fs is about to perform a
- * metadata read
- */
- else if (sdio->boundary)
- dio_bio_submit(dio, sdio);
}
if (sdio->bio == NULL) {
@@ -737,16 +732,6 @@ submit_page_section(struct dio *dio, struct dio_submit *sdio, struct page *page,
sdio->cur_page_block +
(sdio->cur_page_len >> sdio->blkbits) == blocknr) {
sdio->cur_page_len += len;
-
- /*
- * If sdio->boundary then we want to schedule the IO now to
- * avoid metadata seeks.
- */
- if (sdio->boundary) {
- ret = dio_send_cur_page(dio, sdio, map_bh);
- page_cache_release(sdio->cur_page);
- sdio->cur_page = NULL;
- }
goto out;
}
@@ -758,7 +743,7 @@ submit_page_section(struct dio *dio, struct dio_submit *sdio, struct page *page,
page_cache_release(sdio->cur_page);
sdio->cur_page = NULL;
if (ret)
- goto out;
+ return ret;
}
page_cache_get(page); /* It is in dio */
@@ -768,6 +753,16 @@ submit_page_section(struct dio *dio, struct dio_submit *sdio, struct page *page,
sdio->cur_page_block = blocknr;
sdio->cur_page_fs_offset = sdio->block_in_file << sdio->blkbits;
out:
+ /*
+ * If sdio->boundary then we want to schedule the IO now to
+ * avoid metadata seeks.
+ */
+ if (sdio->boundary) {
+ ret = dio_send_cur_page(dio, sdio, map_bh);
+ dio_bio_submit(dio, sdio);
+ page_cache_release(sdio->cur_page);
+ sdio->cur_page = NULL;
+ }
return ret;
}
@@ -969,7 +964,8 @@ do_holes:
this_chunk_bytes = this_chunk_blocks << blkbits;
BUG_ON(this_chunk_bytes == 0);
- sdio->boundary = buffer_boundary(map_bh);
+ if (this_chunk_blocks == sdio->blocks_available)
+ sdio->boundary = buffer_boundary(map_bh);
ret = submit_page_section(dio, sdio, page,
offset_in_page,
this_chunk_bytes,