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| author | Christoph Hellwig <hch@lst.de> | 2017-09-01 17:39:11 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-09-04 19:05:15 -0400 |
| commit | ac452acae1caa1a451142a30b4e1ea09cfac4410 (patch) | |
| tree | 93f24510cff66d776a610838a2285ffe1c6ac9ff /fs | |
| parent | 317d5a5f0f8fcc084d02c776c602c64a5b94e47b (diff) | |
| download | linux-ac452acae1caa1a451142a30b4e1ea09cfac4410.tar.gz linux-ac452acae1caa1a451142a30b4e1ea09cfac4410.tar.bz2 linux-ac452acae1caa1a451142a30b4e1ea09cfac4410.zip | |
fs: move kernel_write to fs/read_write.c
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/read_write.c | 17 | ||||
| -rw-r--r-- | fs/splice.c | 16 |
2 files changed, 16 insertions, 17 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 0cc7033aa413..417dbe199505 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -496,9 +496,24 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t inc_syscw(current); return ret; } - EXPORT_SYMBOL(__kernel_write); +ssize_t kernel_write(struct file *file, const char *buf, size_t count, + loff_t pos) +{ + mm_segment_t old_fs; + ssize_t res; + + old_fs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ + res = vfs_write(file, (__force const char __user *)buf, count, &pos); + set_fs(old_fs); + + return res; +} +EXPORT_SYMBOL(kernel_write); + ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) { ssize_t ret; diff --git a/fs/splice.c b/fs/splice.c index ae41201d0325..f3084cce0ea6 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -364,22 +364,6 @@ static ssize_t kernel_readv(struct file *file, const struct kvec *vec, return res; } -ssize_t kernel_write(struct file *file, const char *buf, size_t count, - loff_t pos) -{ - mm_segment_t old_fs; - ssize_t res; - - old_fs = get_fs(); - set_fs(get_ds()); - /* The cast to a user pointer is valid due to the set_fs() */ - res = vfs_write(file, (__force const char __user *)buf, count, &pos); - set_fs(old_fs); - - return res; -} -EXPORT_SYMBOL(kernel_write); - static ssize_t default_file_splice_read(struct file *in, loff_t *ppos, struct pipe_inode_info *pipe, size_t len, unsigned int flags) |