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mount: Add comment to is_root_xxx checks

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Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov 2013-12-26 11:22:01 +04:00
parent a0049bfe6a
commit 08b893fd03
1 changed files with 9 additions and 0 deletions
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9
mount.c
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@ -50,11 +50,20 @@ static inline int is_root(char *p)
return p[0] == '/' && p[1] == '\0';
}
/* True for the root mount (the topmost one) */
static inline int is_root_mount(struct mount_info *mi)
{
return is_root(mi->mountpoint);
}
/*
* True if the mountpoint target is root on its FS.
*
* This is used to determine whether we need to postpone
* mounting. E.g. one can bind mount some subdir from a
* disk, and in this case we'll have to get the root disk
* mount first, then bind-mount it. See do_mount_one().
*/
static inline int fsroot_mounted(struct mount_info *mi)
{
return is_root(mi->root);