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>
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@ -104,6 +104,14 @@ static void autofs4_del_active(struct dentry *dentry)
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return;
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return;
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}
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}
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static unsigned int autofs4_need_mount(unsigned int flags)
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{
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unsigned int res = 0;
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if (flags & (TRIGGER_FLAGS | TRIGGER_INTENTS))
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res = 1;
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return res;
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}
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static int autofs4_dir_open(struct inode *inode, struct file *file)
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static int autofs4_dir_open(struct inode *inode, struct file *file)
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{
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{
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struct dentry *dentry = file->f_path.dentry;
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struct dentry *dentry = file->f_path.dentry;
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@ -168,7 +176,7 @@ static int try_to_fill_dentry(struct dentry *dentry, int flags)
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}
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}
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/* Trigger mount for path component or follow link */
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/* Trigger mount for path component or follow link */
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} else if (dentry->d_flags & DCACHE_AUTOFS_PENDING ||
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} else if (dentry->d_flags & DCACHE_AUTOFS_PENDING ||
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flags & (TRIGGER_FLAGS | TRIGGER_INTENTS) ||
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autofs4_need_mount(flags) ||
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current->link_count) {
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current->link_count) {
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DPRINTK("waiting for mount name=%.*s",
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DPRINTK("waiting for mount name=%.*s",
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dentry->d_name.len, dentry->d_name.name);
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dentry->d_name.len, dentry->d_name.name);
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@ -234,7 +242,7 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
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autofs4_expire_wait(dentry);
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autofs4_expire_wait(dentry);
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/* We trigger a mount for almost all flags */
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/* We trigger a mount for almost all flags */
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lookup_type = nd->flags & (TRIGGER_FLAGS | TRIGGER_INTENTS);
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lookup_type = autofs4_need_mount(nd->flags);
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if (!(lookup_type || dentry->d_flags & DCACHE_AUTOFS_PENDING))
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if (!(lookup_type || dentry->d_flags & DCACHE_AUTOFS_PENDING))
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goto follow;
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goto follow;
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