linux-kernel - [PATCH 4/5] f2fs: release inmemory pages when the file was closed

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Message-Id: <1417895739-15251-4-git-send-email-jaegeuk@kernel.org>
Date:	Sat,  6 Dec 2014 11:55:38 -0800
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Cc:	Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 4/5] f2fs: release inmemory pages when the file was closed

If file is closed, let's drop inmemory pages.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/file.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 146e58a..b6f3fbf 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -901,6 +901,14 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
 	return f2fs_convert_inline_inode(inode);
 }
 
+static int f2fs_release_file(struct inode *inode, struct file *filp)
+{
+	/* some remained atomic pages should discarded */
+	if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode))
+		commit_inmem_pages(inode, true);
+	return 0;
+}
+
 static int f2fs_ioc_commit_atomic_write(struct file *filp)
 {
 	struct inode *inode = file_inode(filp);
@@ -1010,6 +1018,7 @@ const struct file_operations f2fs_file_operations = {
 	.read_iter	= generic_file_read_iter,
 	.write_iter	= generic_file_write_iter,
 	.open		= generic_file_open,
+	.release	= f2fs_release_file,
 	.mmap		= f2fs_file_mmap,
 	.fsync		= f2fs_sync_file,
 	.fallocate	= f2fs_fallocate,
-- 
2.1.1

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