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[readdir] introduce iterate_dir() and dir_context

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iterate_dir(): new helper, replacing vfs_readdir().

struct dir_context: contains the readdir callback (and will get more stuff
in it), embedded into whatever data that callback wants to deal with;
eventually, we'll be passing it to ->readdir() replacement instead of
(data,filldir) pair.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2013-05-15 13:52:59 -04:00
parent 83a8761142
commit 5c0ba4e076
10 changed files with 53 additions and 20 deletions
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4
fs/ecryptfs/file.c
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@@ -68,6 +68,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
}
struct ecryptfs_getdents_callback {
struct dir_context ctx;
void *dirent;
struct dentry *dentry;
filldir_t filldir;
@@ -126,7 +127,8 @@ static int ecryptfs_readdir(struct file *file, void *dirent, filldir_t filldir)
buf.filldir = filldir;
buf.filldir_called = 0;
buf.entries_written = 0;
rc = vfs_readdir(lower_file, ecryptfs_filldir, (void *)&buf);
buf.ctx.actor = ecryptfs_filldir;
rc = iterate_dir(lower_file, &buf.ctx);
file->f_pos = lower_file->f_pos;
if (rc < 0)
goto out;