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| author | Jeff Garzik <jgarzik@pobox.com> | 2006-02-07 01:47:12 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-02-07 01:47:12 -0500 |
| commit | 3c9b3a8575b4f2551e3b5b74ffa1c3559c6338eb (patch) | |
| tree | 7f8d84353852401ec74e005f6f0b1eb958b9a70d /mm/swapfile.c | |
| parent | c0d3c0c0ce94d3db893577ae98e64414d92e49d8 (diff) | |
| parent | c03296a868ae7c91aa2d8b372184763b18f16d7a (diff) | |
| download | blackbird-obmc-linux-3c9b3a8575b4f2551e3b5b74ffa1c3559c6338eb.tar.gz blackbird-obmc-linux-3c9b3a8575b4f2551e3b5b74ffa1c3559c6338eb.zip | |
Merge branch 'master'
Diffstat (limited to 'mm/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index f1e69c30d203..1f9cf0d073b8 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -554,6 +554,15 @@ static int unuse_mm(struct mm_struct *mm, return 0; } +#ifdef CONFIG_MIGRATION +int remove_vma_swap(struct vm_area_struct *vma, struct page *page) +{ + swp_entry_t entry = { .val = page_private(page) }; + + return unuse_vma(vma, entry, page); +} +#endif + /* * Scan swap_map from current position to next entry still in use. * Recycle to start on reaching the end, returning 0 when empty. @@ -646,6 +655,7 @@ static int try_to_unuse(unsigned int type) */ swap_map = &si->swap_map[i]; entry = swp_entry(type, i); +again: page = read_swap_cache_async(entry, NULL, 0); if (!page) { /* @@ -680,6 +690,12 @@ static int try_to_unuse(unsigned int type) wait_on_page_locked(page); wait_on_page_writeback(page); lock_page(page); + if (!PageSwapCache(page)) { + /* Page migration has occured */ + unlock_page(page); + page_cache_release(page); + goto again; + } wait_on_page_writeback(page); /* |
