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authorRusty Russell <rusty@rustcorp.com.au>2007-07-19 01:48:08 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-19 10:04:44 -0700
commitcf914a7d656e62b9dd3e0dffe4f62b953ae6048d (patch)
treebaf7e79de006ca80eac426d2d1be4c52f5f19624 /mm/filemap.c
parentfe3cba17c49471e99d3421e675fc8b3deaaf0b70 (diff)
downloadlinux-cf914a7d656e62b9dd3e0dffe4f62b953ae6048d.tar.bz2
readahead: split ondemand readahead interface into two functions
Split ondemand readahead interface into two functions. I think this makes it a little clearer for non-readahead experts (like Rusty). Internally they both call ondemand_readahead(), but the page argument is changed to an obvious boolean flag. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 5eb0a6b9d607..49a6fe375d01 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -894,15 +894,15 @@ void do_generic_mapping_read(struct address_space *mapping,
find_page:
page = find_get_page(mapping, index);
if (!page) {
- page_cache_readahead_ondemand(mapping,
- &ra, filp, page,
+ page_cache_sync_readahead(mapping,
+ &ra, filp,
index, last_index - index);
page = find_get_page(mapping, index);
if (unlikely(page == NULL))
goto no_cached_page;
}
if (PageReadahead(page)) {
- page_cache_readahead_ondemand(mapping,
+ page_cache_async_readahead(mapping,
&ra, filp, page,
index, last_index - index);
}
@@ -1348,14 +1348,14 @@ retry_find:
*/
if (VM_SequentialReadHint(vma)) {
if (!page) {
- page_cache_readahead_ondemand(mapping, ra, file, page,
+ page_cache_sync_readahead(mapping, ra, file,
vmf->pgoff, 1);
page = find_lock_page(mapping, vmf->pgoff);
if (!page)
goto no_cached_page;
}
if (PageReadahead(page)) {
- page_cache_readahead_ondemand(mapping, ra, file, page,
+ page_cache_async_readahead(mapping, ra, file, page,
vmf->pgoff, 1);
}
}