diff options
| author | J. Bruce Fields <bfields@citi.umich.edu> | 2008-07-03 16:24:06 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2008-07-03 16:24:06 -0400 |
| commit | e86322f611eef95aafaf726fd3965e5b211f1985 (patch) | |
| tree | 28547e26df4fc6ae671dc8cc6912a53717e4db08 /fs/splice.c | |
| parent | b001a1b6aa960949a24c2cdc28257dfcc9428d74 (diff) | |
| parent | 8948896c9e098c6fd31a6a698a598a7cbd7fa40e (diff) | |
Merge branch 'for-bfields' of git://linux-nfs.org/~tomtucker/xprt-switch-2.6 into for-2.6.27
Diffstat (limited to 'fs/splice.c')
| -rw-r--r-- | fs/splice.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/fs/splice.c b/fs/splice.c index 78150038b58..aa5f6f60b30 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -58,8 +58,8 @@ static int page_cache_pipe_buf_steal(struct pipe_inode_info *pipe, */ wait_on_page_writeback(page); - if (PagePrivate(page)) - try_to_release_page(page, GFP_KERNEL); + if (PagePrivate(page) && !try_to_release_page(page, GFP_KERNEL)) + goto out_unlock; /* * If we succeeded in removing the mapping, set LRU flag @@ -75,6 +75,7 @@ static int page_cache_pipe_buf_steal(struct pipe_inode_info *pipe, * Raced with truncate or failed to remove page from current * address space, unlock and return failure. */ +out_unlock: unlock_page(page); return 1; } @@ -983,7 +984,7 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd, while (len) { size_t read_len; - loff_t pos = sd->pos; + loff_t pos = sd->pos, prev_pos = pos; ret = do_splice_to(in, &pos, pipe, len, flags); if (unlikely(ret <= 0)) @@ -998,15 +999,19 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd, * could get stuck data in the internal pipe: */ ret = actor(pipe, sd); - if (unlikely(ret <= 0)) + if (unlikely(ret <= 0)) { + sd->pos = prev_pos; goto out_release; + } bytes += ret; len -= ret; sd->pos = pos; - if (ret < read_len) + if (ret < read_len) { + sd->pos = prev_pos + ret; goto out_release; + } } done: @@ -1072,7 +1077,7 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, ret = splice_direct_to_actor(in, &sd, direct_splice_actor); if (ret > 0) - *ppos += ret; + *ppos = sd.pos; return ret; } |