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| author | Jeff Garzik <jgarzik@pretzel.yyz.us> | 2005-06-22 13:07:28 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-06-22 13:07:28 -0400 |
| commit | ff40c6d3d1437ecdf295b8e39adcb06c3d6021ef (patch) | |
| tree | 3666d029b4bd4df2909dbefd9c7a09e6042b7d32 /mm/filemap.c | |
| parent | 8bf62ecee58360749c5f0e68bc97d5e02a6816b1 (diff) | |
| parent | 2a5a68b840cbab31baab2d9b2e1e6de3b289ae1e (diff) | |
Merge upstream kernel changes into 'C/H/S support' branch of libata.
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 47263ac3e4ea..4a2fee2cb62b 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1004,7 +1004,7 @@ __generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, if (pos < size) { retval = generic_file_direct_IO(READ, iocb, iov, pos, nr_segs); - if (retval >= 0 && !is_sync_kiocb(iocb)) + if (retval > 0 && !is_sync_kiocb(iocb)) retval = -EIOCBQUEUED; if (retval > 0) *ppos = pos + retval; @@ -1968,6 +1968,7 @@ generic_file_buffered_write(struct kiocb *iocb, const struct iovec *iov, do { unsigned long index; unsigned long offset; + unsigned long maxlen; size_t copied; offset = (pos & (PAGE_CACHE_SIZE -1)); /* Within page */ @@ -1982,7 +1983,10 @@ generic_file_buffered_write(struct kiocb *iocb, const struct iovec *iov, * same page as we're writing to, without it being marked * up-to-date. */ - fault_in_pages_readable(buf, bytes); + maxlen = cur_iov->iov_len - iov_base; + if (maxlen > bytes) + maxlen = bytes; + fault_in_pages_readable(buf, maxlen); page = __grab_cache_page(mapping,index,&cached_page,&lru_pvec); if (!page) { @@ -2024,6 +2028,8 @@ generic_file_buffered_write(struct kiocb *iocb, const struct iovec *iov, filemap_set_next_iovec(&cur_iov, &iov_base, status); buf = cur_iov->iov_base + iov_base; + } else { + iov_base += status; } } } |