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| author | Christoph Hellwig <hch@lst.de> | 2017-09-01 17:39:19 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-09-04 19:05:16 -0400 |
| commit | 8e93157bdd4a9718ce8e05c370ab9fe48debb4c2 (patch) | |
| tree | fc0bacd71782ae5830eb36f0cbf19c5e8bdebd4a /fs/btrfs | |
| parent | 670986ec01c1129db114b7720826a80756c7e899 (diff) | |
| download | linux-8e93157bdd4a9718ce8e05c370ab9fe48debb4c2.tar.gz linux-8e93157bdd4a9718ce8e05c370ab9fe48debb4c2.tar.bz2 linux-8e93157bdd4a9718ce8e05c370ab9fe48debb4c2.zip | |
btrfs: switch write_buf to kernel_write
Instead of playing with the addressing limits.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/send.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index b082210df9c8..24b989fd130c 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -539,33 +539,23 @@ static struct btrfs_path *alloc_path_for_send(void) static int write_buf(struct file *filp, const void *buf, u32 len, loff_t *off) { int ret; - mm_segment_t old_fs; u32 pos = 0; - old_fs = get_fs(); - set_fs(KERNEL_DS); - while (pos < len) { - ret = vfs_write(filp, (__force const char __user *)buf + pos, - len - pos, off); + ret = kernel_write(filp, buf + pos, len - pos, off); /* TODO handle that correctly */ /*if (ret == -ERESTARTSYS) { continue; }*/ if (ret < 0) - goto out; + return ret; if (ret == 0) { - ret = -EIO; - goto out; + return -EIO; } pos += ret; } - ret = 0; - -out: - set_fs(old_fs); - return ret; + return 0; } static int tlv_put(struct send_ctx *sctx, u16 attr, const void *data, int len) |