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| author | Dmitriy Monakhov <dmonakhov@sw.ru> | 2007-03-29 14:24:09 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2007-03-29 14:26:42 +0200 |
| commit | d9993c37ef87c758d4a6e63972395b1cf8a4cb7b (patch) | |
| tree | 0396a035c6905e71b038a24459edff73dcf8c53e /fs/splice.c | |
| parent | 190a4408ecb577391ea5fbd1f90148a6992a5756 (diff) | |
| download | linux-d9993c37ef87c758d4a6e63972395b1cf8a4cb7b.tar.gz linux-d9993c37ef87c758d4a6e63972395b1cf8a4cb7b.tar.bz2 linux-d9993c37ef87c758d4a6e63972395b1cf8a4cb7b.zip | |
[PATCH] splice: partial write fix
Currently if partial write has happened while ->commit_write() then page
wasn't marked as accessed and rebalanced.
Signed-off-by: Monakhov Dmitriy <dmonakhov@openvz.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'fs/splice.c')
| -rw-r--r-- | fs/splice.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/fs/splice.c b/fs/splice.c index 07f6556add0a..5428b0ff3b6f 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -627,18 +627,25 @@ find_page: } ret = mapping->a_ops->commit_write(file, page, offset, offset+this_len); - if (!ret) { + if (ret) { + if (ret == AOP_TRUNCATED_PAGE) { + page_cache_release(page); + goto find_page; + } + if (ret < 0) + goto out; /* - * Return the number of bytes written and mark page as - * accessed, we are now done! + * Partial write has happened, so 'ret' already initialized by + * number of bytes written, Where is nothing we have to do here. */ + } else ret = this_len; - mark_page_accessed(page); - balance_dirty_pages_ratelimited(mapping); - } else if (ret == AOP_TRUNCATED_PAGE) { - page_cache_release(page); - goto find_page; - } + /* + * Return the number of bytes written and mark page as + * accessed, we are now done! + */ + mark_page_accessed(page); + balance_dirty_pages_ratelimited(mapping); out: page_cache_release(page); unlock_page(page); |