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init: add an init_mount helper

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Like do_mount, but takes a kernel pointer for the destination path.
Switch over the mounts in the init code and devtmpfs to it, which
just happen to work due to the implicit set_fs(KERNEL_DS) during early
init right now.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig
2020-07-21 11:12:08 +02:00
parent 09cbcec07b
commit c60166f042
9 changed files with 46 additions and 11 deletions
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2
fs/namespace.c
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@@ -3111,7 +3111,7 @@ char *copy_mount_string(const void __user *data)
* Therefore, if this magic number is present, it carries no information
* and must be discarded.
*/
static int path_mount(const char *dev_name, struct path *path,
int path_mount(const char *dev_name, struct path *path,
const char *type_page, unsigned long flags, void *data_page)
{
unsigned int mnt_flags = 0, sb_flags;