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From: Miklos Szeredi <mszeredi@redhat.com>
To: linux-unionfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [RFC PATCH 15/35] ovl: readd fallocate
Date: Thu, 12 Apr 2018 17:08:06 +0200	[thread overview]
Message-ID: <20180412150826.20988-16-mszeredi@redhat.com> (raw)
In-Reply-To: <20180412150826.20988-1-mszeredi@redhat.com>

Implement stacked fallocate.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
---
 fs/overlayfs/file.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/fs/overlayfs/file.c b/fs/overlayfs/file.c
index f1cc2fdc62c1..05e3e2f80b89 100644
--- a/fs/overlayfs/file.c
+++ b/fs/overlayfs/file.c
@@ -268,6 +268,29 @@ static int ovl_mmap(struct file *file, struct vm_area_struct *vma)
 	return ret;
 }
 
+long ovl_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
+{
+	struct inode *inode = file_inode(file);
+	struct fd real;
+	const struct cred *old_cred;
+	int ret;
+
+	ret = ovl_real_file(file, &real);
+	if (ret)
+		return ret;
+
+	old_cred = ovl_override_creds(file_inode(file)->i_sb);
+	ret = vfs_fallocate(real.file, mode, offset, len);
+	revert_creds(old_cred);
+
+	/* Update size */
+	ovl_copyattr(ovl_inode_real(inode), inode);
+
+	fdput(real);
+
+	return ret;
+}
+
 const struct file_operations ovl_file_operations = {
 	.open		= ovl_open,
 	.release	= ovl_release,
@@ -276,4 +299,5 @@ const struct file_operations ovl_file_operations = {
 	.write_iter	= ovl_write_iter,
 	.fsync		= ovl_fsync,
 	.mmap		= ovl_mmap,
+	.fallocate	= ovl_fallocate,
 };
-- 
2.14.3

  parent reply	other threads:[~2018-04-12 15:08 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-12 15:07 [RFC PATCH 00/35] overlayfs: stack file operations Miklos Szeredi
2018-04-12 15:07 ` [RFC PATCH 01/35] vfs: clean up dedup Miklos Szeredi
2018-04-12 16:25   ` Matthew Wilcox
2018-04-12 17:24     ` Miklos Szeredi
2018-04-12 15:07 ` [RFC PATCH 02/35] vfs: add path_open() Miklos Szeredi
2018-04-12 16:38   ` Matthew Wilcox
2018-04-12 15:07 ` [RFC PATCH 03/35] vfs: optionally don't account file in nr_files Miklos Szeredi
2018-04-12 15:07 ` [RFC PATCH 04/35] ovl: copy up times Miklos Szeredi
2018-04-13  8:25   ` Amir Goldstein
2018-04-13 14:23   ` Vivek Goyal
2018-04-12 15:07 ` [RFC PATCH 05/35] ovl: copy up inode flags Miklos Szeredi
2018-04-12 15:07 ` [RFC PATCH 06/35] Revert "Revert "ovl: get_write_access() in truncate"" Miklos Szeredi
2018-04-12 15:07 ` [RFC PATCH 07/35] ovl: copy up file size as well Miklos Szeredi
2018-04-24 18:10   ` Vivek Goyal
2018-04-12 15:07 ` [RFC PATCH 08/35] ovl: deal with overlay files in ovl_d_real() Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 09/35] ovl: stack file ops Miklos Szeredi
2018-04-26 14:13   ` Vivek Goyal
2018-04-26 14:43     ` Miklos Szeredi
2018-04-26 14:56       ` Vivek Goyal
2018-04-26 15:01         ` Miklos Szeredi
2018-04-26 15:13           ` Vivek Goyal
2018-04-26 15:21             ` Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 10/35] ovl: add helper to return real file Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 11/35] ovl: readd read_iter Miklos Szeredi
2018-04-13 13:35   ` Amir Goldstein
2018-04-12 15:08 ` [RFC PATCH 12/35] ovl: readd write_iter Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 13/35] ovl: readd fsync Miklos Szeredi
2018-04-23 13:36   ` Vivek Goyal
2018-04-23 13:39     ` Miklos Szeredi
2018-04-23 13:53       ` Vivek Goyal
2018-04-23 14:09         ` Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 14/35] ovl: readd mmap Miklos Szeredi
2018-04-12 15:08 ` Miklos Szeredi [this message]
2018-04-12 15:08 ` [RFC PATCH 16/35] ovl: readd lsattr/chattr support Miklos Szeredi
2018-04-13 14:48   ` Amir Goldstein
2018-04-17 19:51   ` Amir Goldstein
2018-04-22  8:35     ` Amir Goldstein
2018-04-22 15:18       ` Amir Goldstein
2018-04-23 10:21       ` Miklos Szeredi
2018-04-23 10:28         ` Miklos Szeredi
2018-04-23  6:11   ` Ritesh Harjani
2018-04-12 15:08 ` [RFC PATCH 17/35] ovl: readd fiemap Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 18/35] ovl: readd O_DIRECT support Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 19/35] ovl: readd reflink/copyfile/dedup support Miklos Szeredi
2018-04-17 20:31   ` Amir Goldstein
2018-04-18  8:39     ` Amir Goldstein
2018-05-03 16:04     ` Miklos Szeredi
2018-05-03 19:48       ` Amir Goldstein
2018-04-12 15:08 ` [RFC PATCH 20/35] vfs: don't open real Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 21/35] vfs: add f_op->pre_mmap() Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 22/35] ovl: copy-up on MAP_SHARED Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 23/35] vfs: simplify dentry_open() Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 24/35] Revert "ovl: fix relatime for directories" Miklos Szeredi
2018-04-13 14:02   ` Amir Goldstein
2018-04-13 15:55   ` Vivek Goyal
2018-04-12 15:08 ` [RFC PATCH 25/35] Revert "vfs: update ovl inode before relatime check" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 26/35] Revert "ovl: fix may_write_real() for overlayfs directories" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 27/35] Revert "ovl: don't allow writing ioctl on lower layer" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 28/35] Revert "vfs: add flags to d_real()" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 29/35] Revert "vfs: do get_write_access() on upper layer of overlayfs" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 30/35] Revert "vfs: make argument of d_real_inode() const" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 31/35] Revert "vfs: add d_real_inode() helper" Miklos Szeredi
2018-04-18  8:19   ` Amir Goldstein
2018-04-18 11:42     ` Miklos Szeredi
2018-04-18 13:38       ` Steven Rostedt
2018-04-18 13:49         ` Miklos Szeredi
2018-04-18 13:56           ` Steven Rostedt
2018-04-19 19:54           ` Vivek Goyal
2018-04-20  9:14             ` Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 32/35] Partially revert "locks: fix file locking on overlayfs" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 33/35] Revert "fsnotify: support overlayfs" Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 34/35] vfs: simplify d_op->d_real() Miklos Szeredi
2018-04-12 15:08 ` [RFC PATCH 35/35] ovl: fix documentation of non-standard behavior Miklos Szeredi
2018-04-13 11:23   ` Amir Goldstein
2018-04-25 14:49 ` [RFC PATCH 00/35] overlayfs: stack file operations J. R. Okajima
2018-04-25 19:44   ` Miklos Szeredi
2018-05-04 15:23 ` Miklos Szeredi
2018-05-05 16:37   ` Amir Goldstein
2018-05-08 14:25     ` Miklos Szeredi

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