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autofs4: use helper function for need mount check 

Define simple helper function for checking if we need to trigger a mount.

Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Sage Weil <sage@newdream.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Andreas Dilger <adilger@sun.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Yehuda Saheh <yehuda@newdream.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ian Kent 2009-12-15 16:45:44 -08:00 committed by Linus Torvalds
parent c4cd70b3e3
commit 36b6413ef3
1 changed files with 10 additions and 2 deletions
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12
fs/autofs4/root.c
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@ -104,6 +104,14 @@ static void autofs4_del_active(struct dentry *dentry)
return;
}
static unsigned int autofs4_need_mount(unsigned int flags)
{
unsigned int res = 0;
if (flags & (TRIGGER_FLAGS | TRIGGER_INTENTS))
res = 1;
return res;
}
static int autofs4_dir_open(struct inode *inode, struct file *file)
{
struct dentry *dentry = file->f_path.dentry;
@ -168,7 +176,7 @@ static int try_to_fill_dentry(struct dentry *dentry, int flags)
}
/* Trigger mount for path component or follow link */
} else if (dentry->d_flags & DCACHE_AUTOFS_PENDING ||
flags & (TRIGGER_FLAGS | TRIGGER_INTENTS) ||
autofs4_need_mount(flags) ||
current->link_count) {
DPRINTK("waiting for mount name=%.*s",
dentry->d_name.len, dentry->d_name.name);
@ -234,7 +242,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
autofs4_expire_wait(dentry);
/* We trigger a mount for almost all flags */
lookup_type = nd->flags & (TRIGGER_FLAGS | TRIGGER_INTENTS);
lookup_type = autofs4_need_mount(nd->flags);
if (!(lookup_type || dentry->d_flags & DCACHE_AUTOFS_PENDING))
goto follow;