From: Goldwyn Rodrigues <rgoldwyn@suse.de>
To: linux-btrfs@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, jack@suse.cz, david@fromorbit.com,
willy@infradead.org, hch@lst.de, darrick.wong@oracle.com,
kilobyte@angband.pl, dsterba@suse.cz, nborisov@suse.com,
linux-nvdimm@lists.01.org, Goldwyn Rodrigues <rgoldwyn@suse.com>
Subject: [PATCH 17/18] btrfs: Disable dax-based defrag and send
Date: Tue, 16 Apr 2019 11:41:53 -0500 [thread overview]
Message-ID: <20190416164154.30390-18-rgoldwyn@suse.de> (raw)
In-Reply-To: <20190416164154.30390-1-rgoldwyn@suse.de>
From: Goldwyn Rodrigues <rgoldwyn@suse.com>
This is temporary, and a TODO.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
---
fs/btrfs/ioctl.c | 13 +++++++++++++
fs/btrfs/send.c | 4 ++++
2 files changed, 17 insertions(+)
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index cd590105bd78..8ac770fe00dc 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2990,6 +2990,12 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp)
goto out;
}
+ if (IS_DAX(inode)) {
+ btrfs_warn(root->fs_info, "File defrag is not supported with DAX");
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
if (argp) {
if (copy_from_user(range, argp,
sizeof(*range))) {
@@ -4653,6 +4659,10 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+ /* send can be on a directory, so check super block instead */
+ if (btrfs_test_opt(fs_info, DAX))
+ return -EOPNOTSUPP;
+
ret = mnt_want_write_file(file);
if (ret)
return ret;
@@ -5505,6 +5515,9 @@ static int _btrfs_ioctl_send(struct file *file, void __user *argp, bool compat)
struct btrfs_ioctl_send_args *arg;
int ret;
+ if (IS_DAX(file_inode(file)))
+ return -EOPNOTSUPP;
+
if (compat) {
#if defined(CONFIG_64BIT) && defined(CONFIG_COMPAT)
struct btrfs_ioctl_send_args_32 args32;
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 7ea2d6b1f170..9679fd54db86 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -6609,6 +6609,10 @@ long btrfs_ioctl_send(struct file *mnt_file, struct btrfs_ioctl_send_args *arg)
int sort_clone_roots = 0;
int index;
+ /* send can be on a directory, so check super block instead */
+ if (btrfs_test_opt(fs_info, DAX))
+ return -EOPNOTSUPP;
+
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
--
2.16.4
next prev parent reply other threads:[~2019-04-16 16:42 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-16 16:41 [PATCH v3 00/18] btrfs dax support Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 01/18] btrfs: create a mount option for dax Goldwyn Rodrigues
2019-04-16 16:52 ` Dan Williams
2019-04-16 16:41 ` [PATCH 02/18] btrfs: Carve out btrfs_get_extent_map_write() out of btrfs_get_blocks_write() Goldwyn Rodrigues
2019-04-16 23:45 ` Elliott, Robert (Servers)
2019-04-16 16:41 ` [PATCH 03/18] btrfs: basic dax read Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 04/18] dax: Introduce IOMAP_DAX_COW to CoW edges during writes Goldwyn Rodrigues
2019-04-17 16:46 ` Darrick J. Wong
2019-04-16 16:41 ` [PATCH 05/18] btrfs: return whether extent is nocow or not Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 06/18] btrfs: Rename __endio_write_update_ordered() to btrfs_update_ordered_extent() Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 07/18] btrfs: add dax write support Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 08/18] dax: memcpy page in case of IOMAP_DAX_COW for mmap faults Goldwyn Rodrigues
2019-04-17 16:52 ` Darrick J. Wong
2019-04-16 16:41 ` [PATCH 09/18] btrfs: Add dax specific address_space_operations Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 10/18] dax: replace mmap entry in case of CoW Goldwyn Rodrigues
2019-04-17 15:24 ` Darrick J. Wong
2019-04-16 16:41 ` [PATCH 11/18] btrfs: add dax mmap support Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 12/18] btrfs: allow MAP_SYNC mmap Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 13/18] fs: dedup file range to use a compare function Goldwyn Rodrigues
2019-04-17 15:36 ` Darrick J. Wong
2019-04-16 16:41 ` [PATCH 14/18] dax: memcpy before zeroing range Goldwyn Rodrigues
2019-04-17 15:45 ` Darrick J. Wong
2019-04-17 16:39 ` Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 15/18] btrfs: handle dax page zeroing Goldwyn Rodrigues
2019-04-16 16:41 ` [PATCH 16/18] btrfs: Writeprotect mmap pages on snapshot Goldwyn Rodrigues
2019-04-16 16:41 ` Goldwyn Rodrigues [this message]
2019-04-16 16:41 ` [PATCH 18/18] btrfs: trace functions for btrfs_iomap_begin/end Goldwyn Rodrigues
2019-04-17 16:49 ` [PATCH v3 00/18] btrfs dax support Adam Borowski
2019-04-29 17:26 [PATCH v4 " Goldwyn Rodrigues
2019-04-29 17:26 ` [PATCH 17/18] btrfs: Disable dax-based defrag and send Goldwyn Rodrigues
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