From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 15 May 2013 22:49:12 +0000 (-0400)
Subject: [readdir] introduce ->iterate(), ctx->pos, dir_emit()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~84^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bb6f619b3a49f940d7478112500da312d70866eb;p=pandora-kernel.git

[readdir] introduce ->iterate(), ctx->pos, dir_emit()

New method - ->iterate(file, ctx).  That's the replacement for ->readdir();
it takes callback from ctx->actor, uses ctx->pos instead of file->f_pos and
calls dir_emit(ctx, ...) instead of filldir(data, ...).  It does *not*
update file->f_pos (or look at it, for that matter); iterate_dir() does the
update.

Note that dir_emit() takes the offset from ctx->pos (and eventually
filldir_t will lose that argument).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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