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split d_flags calculation out of d_set_d_op()

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Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2025-02-23 15:39:26 -05:00
parent 05fb0e6664
commit fcb1e72060
1 changed files with 30 additions and 23 deletions
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53
fs/dcache.c
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@ -1837,33 +1837,40 @@ struct dentry *d_alloc_name(struct dentry *parent, const char *name)
}
EXPORT_SYMBOL(d_alloc_name);
#define DCACHE_OP_FLAGS \
(DCACHE_OP_HASH | DCACHE_OP_COMPARE | DCACHE_OP_REVALIDATE | \
DCACHE_OP_WEAK_REVALIDATE | DCACHE_OP_DELETE | DCACHE_OP_REAL)
static unsigned int d_op_flags(const struct dentry_operations *op)
{
unsigned int flags = 0;
if (op) {
if (op->d_hash)
flags |= DCACHE_OP_HASH;
if (op->d_compare)
flags |= DCACHE_OP_COMPARE;
if (op->d_revalidate)
flags |= DCACHE_OP_REVALIDATE;
if (op->d_weak_revalidate)
flags |= DCACHE_OP_WEAK_REVALIDATE;
if (op->d_delete)
flags |= DCACHE_OP_DELETE;
if (op->d_prune)
flags |= DCACHE_OP_PRUNE;
if (op->d_real)
flags |= DCACHE_OP_REAL;
}
return flags;
}
void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op)
{
unsigned int flags = d_op_flags(op);
WARN_ON_ONCE(dentry->d_op);
WARN_ON_ONCE(dentry->d_flags & (DCACHE_OP_HASH |
DCACHE_OP_COMPARE |
DCACHE_OP_REVALIDATE |
DCACHE_OP_WEAK_REVALIDATE |
DCACHE_OP_DELETE |
DCACHE_OP_REAL));
WARN_ON_ONCE(dentry->d_flags & DCACHE_OP_FLAGS);
dentry->d_op = op;
if (!op)
return;
if (op->d_hash)
dentry->d_flags |= DCACHE_OP_HASH;
if (op->d_compare)
dentry->d_flags |= DCACHE_OP_COMPARE;
if (op->d_revalidate)
dentry->d_flags |= DCACHE_OP_REVALIDATE;
if (op->d_weak_revalidate)
dentry->d_flags |= DCACHE_OP_WEAK_REVALIDATE;
if (op->d_delete)
dentry->d_flags |= DCACHE_OP_DELETE;
if (op->d_prune)
dentry->d_flags |= DCACHE_OP_PRUNE;
if (op->d_real)
dentry->d_flags |= DCACHE_OP_REAL;
if (flags)
dentry->d_flags |= flags;
}
EXPORT_SYMBOL(d_set_d_op);