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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-02-25 19:54:48 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-04-10 15:08:27 -0700 |
| commit | b7f204cca4b7155f47e64555614b1f534a53737e (patch) | |
| tree | 060c9f91afe8d29702ae2c485916ab497a8623b6 /fs/f2fs | |
| parent | 2bca1e2388a8a9e8a3db0daf54fcc124516a3e83 (diff) | |
| download | op-kernel-dev-b7f204cca4b7155f47e64555614b1f534a53737e.zip op-kernel-dev-b7f204cca4b7155f47e64555614b1f534a53737e.tar.gz | |
f2fs: check its block allocation to avoid producing wrong dirty pages
If a page is cached but its block was deallocated, we don't need to make
the page dirty again by gc and truncate_partial_data_page.
In that case, it needs to check its block allocation all the time instead
of giving up-to-date page.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/data.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 62e31b2..389fda7 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -813,11 +813,19 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) .rw = sync ? READ_SYNC : READA, }; + /* + * If sync is false, it needs to check its block allocation. + * This is need and triggered by two flows: + * gc and truncate_partial_data_page. + */ + if (!sync) + goto search; + page = find_get_page(mapping, index); if (page && PageUptodate(page)) return page; f2fs_put_page(page, 0); - +search: if (f2fs_lookup_extent_cache(inode, index, &ei)) { dn.data_blkaddr = ei.blk + index - ei.fofs; goto got_it; |
