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f2fs: use PGP_LOCK to check its truncation 

Previously, after trylock_page is succeeded, it doesn't check its mapping.
In order to fix that, we can just give PGP_LOCK to pagecache_get_page.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
hifive-unleashed-5.1
Jaegeuk Kim 2016-03-30 11:25:31 -07:00
parent 675f10bde6
commit 4a6de50d54
1 changed files with 2 additions and 7 deletions
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9
fs/f2fs/node.c
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@ -1202,13 +1202,10 @@ static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
if (!inode)
return;
page = pagecache_get_page(inode->i_mapping, 0, FGP_NOWAIT, 0);
page = pagecache_get_page(inode->i_mapping, 0, FGP_LOCK|FGP_NOWAIT, 0);
if (!page)
goto iput_out;
if (!trylock_page(page))
goto release_out;
if (!PageUptodate(page))
goto page_out;
@ -1223,9 +1220,7 @@ static void flush_inline_data(struct f2fs_sb_info *sbi, nid_t ino)
else
set_page_dirty(page);
page_out:
unlock_page(page);
release_out:
f2fs_put_page(page, 0);
f2fs_put_page(page, 1);
iput_out:
iput(inode);
}