From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Mon, 11 Apr 2016 20:15:10 +0000 (-0700)
Subject: f2fs: unset atomic/volatile flag in f2fs_release_file
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=26dc3d4424e9f4764d633bd8f9309a01e6f364dd;p=linux-beck.git

f2fs: unset atomic/volatile flag in f2fs_release_file

The atomic/volatile operation should be done in pair of start and commit
ioctl.
For example, if a killed process remains open-ended atomic operation, we should
drop its flag as well as its atomic data. Otherwise, if sqlite initiates another
operation which doesn't require atomic writes, it will lose every data, since
f2fs still treats with them as atomic writes; nobody will trigger its commit.

Reported-by: Miao Xie <miaoxie@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index e10eb61d9f62..ed389f6a37b4 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1266,6 +1266,7 @@ static int f2fs_release_file(struct inode *inode, struct file *filp)
 	if (f2fs_is_atomic_file(inode))
 		drop_inmem_pages(inode);
 	if (f2fs_is_volatile_file(inode)) {
+		clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
 		set_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
 		filemap_fdatawrite(inode->i_mapping);
 		clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE);
@@ -1449,10 +1450,8 @@ static int f2fs_ioc_abort_volatile_write(struct file *filp)
 	if (ret)
 		return ret;
 
-	if (f2fs_is_atomic_file(inode)) {
-		clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
+	if (f2fs_is_atomic_file(inode))
 		drop_inmem_pages(inode);
-	}
 	if (f2fs_is_volatile_file(inode)) {
 		clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
 		ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0);
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 540669d6978e..299c784f5b61 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -239,6 +239,8 @@ void drop_inmem_pages(struct inode *inode)
 {
 	struct f2fs_inode_info *fi = F2FS_I(inode);
 
+	clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
+
 	mutex_lock(&fi->inmem_lock);
 	__revoke_inmem_pages(inode, &fi->inmem_pages, true, false);
 	mutex_unlock(&fi->inmem_lock);