From: Jan Kara <jack@suse.cz>
To: <linux-fsdevel@vger.kernel.org>
Cc: <linux-mm@kvack.org>, <linux-xfs@vger.kernel.org>,
Amir Goldstein <amir73il@gmail.com>,
Boaz Harrosh <boaz@plexistor.com>, Jan Kara <jack@suse.cz>,
stable@vger.kernel.org
Subject: [PATCH 2/3] fs: Export generic_fadvise()
Date: Thu, 11 Jul 2019 16:00:11 +0200 [thread overview]
Message-ID: <20190711140012.1671-3-jack@suse.cz> (raw)
In-Reply-To: <20190711140012.1671-1-jack@suse.cz>
Filesystems will need to call this function from their fadvise handlers.
CC: stable@vger.kernel.org # Needed by "xfs: Fix stale data exposure when
readahead races with hole punch"
Signed-off-by: Jan Kara <jack@suse.cz>
---
include/linux/fs.h | 2 ++
mm/fadvise.c | 4 ++--
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f7fdfe93e25d..2666862ff00d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3536,6 +3536,8 @@ extern void inode_nohighmem(struct inode *inode);
/* mm/fadvise.c */
extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len,
int advice);
+extern int generic_fadvise(struct file *file, loff_t offset, loff_t len,
+ int advice);
#if defined(CONFIG_IO_URING)
extern struct sock *io_uring_get_socket(struct file *file);
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 467bcd032037..4f17c83db575 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -27,8 +27,7 @@
* deactivate the pages and clear PG_Referenced.
*/
-static int generic_fadvise(struct file *file, loff_t offset, loff_t len,
- int advice)
+int generic_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
{
struct inode *inode;
struct address_space *mapping;
@@ -178,6 +177,7 @@ static int generic_fadvise(struct file *file, loff_t offset, loff_t len,
}
return 0;
}
+EXPORT_SYMBOL(generic_fadvise);
int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
{
--
2.16.4
next prev parent reply other threads:[~2019-07-11 14:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-11 14:00 [PATCH 0/3] xfs: Fix races between readahead and hole punching Jan Kara
2019-07-11 14:00 ` [PATCH 1/3] mm: Handle MADV_WILLNEED through vfs_fadvise() Jan Kara
2019-07-12 17:50 ` Darrick J. Wong
2019-07-23 3:08 ` Boaz Harrosh
2019-07-11 14:00 ` Jan Kara [this message]
2019-07-12 17:50 ` [PATCH 2/3] fs: Export generic_fadvise() Darrick J. Wong
2019-07-11 14:00 ` [PATCH 3/3] xfs: Fix stale data exposure when readahead races with hole punch Jan Kara
2019-07-11 15:28 ` Amir Goldstein
2019-07-11 15:49 ` Darrick J. Wong
2019-07-12 12:00 ` Jan Kara
2019-07-12 17:56 ` Darrick J. Wong
2019-08-29 13:10 [PATCH 0/3 v2] xfs: Fix races between readahead and hole punching Jan Kara
2019-08-29 13:10 ` [PATCH 2/3] fs: Export generic_fadvise() Jan Kara
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