Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 601 deletions

diff --git a/ANDROID_3.4.5/fs/gfs2/glops.c b/ANDROID_3.4.5/fs/gfs2/glops.c
deleted file mode 100644
index 1656df7a..00000000
--- a/ANDROID_3.4.5/fs/gfs2/glops.c
+++ /dev/null
@@ -1,601 +0,0 @@
-/*
- * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
- *
- * This copyrighted material is made available to anyone wishing to use,
- * modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License version 2.
- */
-
-#include <linux/spinlock.h>
-#include <linux/completion.h>
-#include <linux/buffer_head.h>
-#include <linux/gfs2_ondisk.h>
-#include <linux/bio.h>
-#include <linux/posix_acl.h>
-
-#include "gfs2.h"
-#include "incore.h"
-#include "bmap.h"
-#include "glock.h"
-#include "glops.h"
-#include "inode.h"
-#include "log.h"
-#include "meta_io.h"
-#include "recovery.h"
-#include "rgrp.h"
-#include "util.h"
-#include "trans.h"
-#include "dir.h"
-
-static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
-{
-	fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
-	       bh, (unsigned long long)bh->b_blocknr, bh->b_state,
-	       bh->b_page->mapping, bh->b_page->flags);
-	fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
-	       gl->gl_name.ln_type, gl->gl_name.ln_number,
-	       gfs2_glock2aspace(gl));
-	gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
-}
-
-/**
- * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
- * @gl: the glock
- * @fsync: set when called from fsync (not all buffers will be clean)
- *
- * None of the buffers should be dirty, locked, or pinned.
- */
-
-static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	struct list_head *head = &gl->gl_ail_list;
-	struct gfs2_bufdata *bd, *tmp;
-	struct buffer_head *bh;
-	const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
-	sector_t blocknr;
-
-	gfs2_log_lock(sdp);
-	spin_lock(&sdp->sd_ail_lock);
-	list_for_each_entry_safe(bd, tmp, head, bd_ail_gl_list) {
-		bh = bd->bd_bh;
-		if (bh->b_state & b_state) {
-			if (fsync)
-				continue;
-			gfs2_ail_error(gl, bh);
-		}
-		blocknr = bh->b_blocknr;
-		bh->b_private = NULL;
-		gfs2_remove_from_ail(bd); /* drops ref on bh */
-
-		bd->bd_bh = NULL;
-		bd->bd_blkno = blocknr;
-
-		gfs2_trans_add_revoke(sdp, bd);
-	}
-	BUG_ON(!fsync && atomic_read(&gl->gl_ail_count));
-	spin_unlock(&sdp->sd_ail_lock);
-	gfs2_log_unlock(sdp);
-}
-
-
-static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	struct gfs2_trans tr;
-
-	memset(&tr, 0, sizeof(tr));
-	tr.tr_revokes = atomic_read(&gl->gl_ail_count);
-
-	if (!tr.tr_revokes)
-		return;
-
-	/* A shortened, inline version of gfs2_trans_begin() */
-	tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
-	tr.tr_ip = (unsigned long)__builtin_return_address(0);
-	INIT_LIST_HEAD(&tr.tr_list_buf);
-	gfs2_log_reserve(sdp, tr.tr_reserved);
-	BUG_ON(current->journal_info);
-	current->journal_info = &tr;
-
-	__gfs2_ail_flush(gl, 0);
-
-	gfs2_trans_end(sdp);
-	gfs2_log_flush(sdp, NULL);
-}
-
-void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	unsigned int revokes = atomic_read(&gl->gl_ail_count);
-	int ret;
-
-	if (!revokes)
-		return;
-
-	ret = gfs2_trans_begin(sdp, 0, revokes);
-	if (ret)
-		return;
-	__gfs2_ail_flush(gl, fsync);
-	gfs2_trans_end(sdp);
-	gfs2_log_flush(sdp, NULL);
-}
-
-/**
- * rgrp_go_sync - sync out the metadata for this glock
- * @gl: the glock
- *
- * Called when demoting or unlocking an EX glock.  We must flush
- * to disk all dirty buffers/pages relating to this glock, and must not
- * not return to caller to demote/unlock the glock until I/O is complete.
- */
-
-static void rgrp_go_sync(struct gfs2_glock *gl)
-{
-	struct address_space *metamapping = gfs2_glock2aspace(gl);
-	struct gfs2_rgrpd *rgd;
-	int error;
-
-	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
-		return;
-	BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
-
-	gfs2_log_flush(gl->gl_sbd, gl);
-	filemap_fdatawrite(metamapping);
-	error = filemap_fdatawait(metamapping);
-        mapping_set_error(metamapping, error);
-	gfs2_ail_empty_gl(gl);
-
-	spin_lock(&gl->gl_spin);
-	rgd = gl->gl_object;
-	if (rgd)
-		gfs2_free_clones(rgd);
-	spin_unlock(&gl->gl_spin);
-}
-
-/**
- * rgrp_go_inval - invalidate the metadata for this glock
- * @gl: the glock
- * @flags:
- *
- * We never used LM_ST_DEFERRED with resource groups, so that we
- * should always see the metadata flag set here.
- *
- */
-
-static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
-{
-	struct address_space *mapping = gfs2_glock2aspace(gl);
-
-	BUG_ON(!(flags & DIO_METADATA));
-	gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
-	truncate_inode_pages(mapping, 0);
-
-	if (gl->gl_object) {
-		struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
-		rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
-	}
-}
-
-/**
- * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
- * @gl: the glock protecting the inode
- *
- */
-
-static void inode_go_sync(struct gfs2_glock *gl)
-{
-	struct gfs2_inode *ip = gl->gl_object;
-	struct address_space *metamapping = gfs2_glock2aspace(gl);
-	int error;
-
-	if (ip && !S_ISREG(ip->i_inode.i_mode))
-		ip = NULL;
-	if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
-		unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
-	if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
-		return;
-
-	BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
-
-	gfs2_log_flush(gl->gl_sbd, gl);
-	filemap_fdatawrite(metamapping);
-	if (ip) {
-		struct address_space *mapping = ip->i_inode.i_mapping;
-		filemap_fdatawrite(mapping);
-		error = filemap_fdatawait(mapping);
-		mapping_set_error(mapping, error);
-	}
-	error = filemap_fdatawait(metamapping);
-	mapping_set_error(metamapping, error);
-	gfs2_ail_empty_gl(gl);
-	/*
-	 * Writeback of the data mapping may cause the dirty flag to be set
-	 * so we have to clear it again here.
-	 */
-	smp_mb__before_clear_bit();
-	clear_bit(GLF_DIRTY, &gl->gl_flags);
-}
-
-/**
- * inode_go_inval - prepare a inode glock to be released
- * @gl: the glock
- * @flags:
- * 
- * Normally we invlidate everything, but if we are moving into
- * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
- * can keep hold of the metadata, since it won't have changed.
- *
- */
-
-static void inode_go_inval(struct gfs2_glock *gl, int flags)
-{
-	struct gfs2_inode *ip = gl->gl_object;
-
-	gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
-
-	if (flags & DIO_METADATA) {
-		struct address_space *mapping = gfs2_glock2aspace(gl);
-		truncate_inode_pages(mapping, 0);
-		if (ip) {
-			set_bit(GIF_INVALID, &ip->i_flags);
-			forget_all_cached_acls(&ip->i_inode);
-			gfs2_dir_hash_inval(ip);
-		}
-	}
-
-	if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
-		gfs2_log_flush(gl->gl_sbd, NULL);
-		gl->gl_sbd->sd_rindex_uptodate = 0;
-	}
-	if (ip && S_ISREG(ip->i_inode.i_mode))
-		truncate_inode_pages(ip->i_inode.i_mapping, 0);
-}
-
-/**
- * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
- * @gl: the glock
- *
- * Returns: 1 if it's ok
- */
-
-static int inode_go_demote_ok(const struct gfs2_glock *gl)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	struct gfs2_holder *gh;
-
-	if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
-		return 0;
-
-	if (!list_empty(&gl->gl_holders)) {
-		gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
-		if (gh->gh_list.next != &gl->gl_holders)
-			return 0;
-	}
-
-	return 1;
-}
-
-/**
- * gfs2_set_nlink - Set the inode's link count based on on-disk info
- * @inode: The inode in question
- * @nlink: The link count
- *
- * If the link count has hit zero, it must never be raised, whatever the
- * on-disk inode might say. When new struct inodes are created the link
- * count is set to 1, so that we can safely use this test even when reading
- * in on disk information for the first time.
- */
-
-static void gfs2_set_nlink(struct inode *inode, u32 nlink)
-{
-	/*
-	 * We will need to review setting the nlink count here in the
-	 * light of the forthcoming ro bind mount work. This is a reminder
-	 * to do that.
-	 */
-	if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
-		if (nlink == 0)
-			clear_nlink(inode);
-		else
-			set_nlink(inode, nlink);
-	}
-}
-
-static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
-{
-	const struct gfs2_dinode *str = buf;
-	struct timespec atime;
-	u16 height, depth;
-
-	if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
-		goto corrupt;
-	ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
-	ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
-	ip->i_inode.i_rdev = 0;
-	switch (ip->i_inode.i_mode & S_IFMT) {
-	case S_IFBLK:
-	case S_IFCHR:
-		ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
-					   be32_to_cpu(str->di_minor));
-		break;
-	};
-
-	ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
-	ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
-	gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
-	i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
-	gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
-	atime.tv_sec = be64_to_cpu(str->di_atime);
-	atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
-	if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
-		ip->i_inode.i_atime = atime;
-	ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
-	ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
-	ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
-	ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
-
-	ip->i_goal = be64_to_cpu(str->di_goal_meta);
-	ip->i_generation = be64_to_cpu(str->di_generation);
-
-	ip->i_diskflags = be32_to_cpu(str->di_flags);
-	ip->i_eattr = be64_to_cpu(str->di_eattr);
-	/* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
-	gfs2_set_inode_flags(&ip->i_inode);
-	height = be16_to_cpu(str->di_height);
-	if (unlikely(height > GFS2_MAX_META_HEIGHT))
-		goto corrupt;
-	ip->i_height = (u8)height;
-
-	depth = be16_to_cpu(str->di_depth);
-	if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
-		goto corrupt;
-	ip->i_depth = (u8)depth;
-	ip->i_entries = be32_to_cpu(str->di_entries);
-
-	if (S_ISREG(ip->i_inode.i_mode))
-		gfs2_set_aops(&ip->i_inode);
-
-	return 0;
-corrupt:
-	gfs2_consist_inode(ip);
-	return -EIO;
-}
-
-/**
- * gfs2_inode_refresh - Refresh the incore copy of the dinode
- * @ip: The GFS2 inode
- *
- * Returns: errno
- */
-
-int gfs2_inode_refresh(struct gfs2_inode *ip)
-{
-	struct buffer_head *dibh;
-	int error;
-
-	error = gfs2_meta_inode_buffer(ip, &dibh);
-	if (error)
-		return error;
-
-	if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
-		brelse(dibh);
-		return -EIO;
-	}
-
-	error = gfs2_dinode_in(ip, dibh->b_data);
-	brelse(dibh);
-	clear_bit(GIF_INVALID, &ip->i_flags);
-
-	return error;
-}
-
-/**
- * inode_go_lock - operation done after an inode lock is locked by a process
- * @gl: the glock
- * @flags:
- *
- * Returns: errno
- */
-
-static int inode_go_lock(struct gfs2_holder *gh)
-{
-	struct gfs2_glock *gl = gh->gh_gl;
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	struct gfs2_inode *ip = gl->gl_object;
-	int error = 0;
-
-	if (!ip || (gh->gh_flags & GL_SKIP))
-		return 0;
-
-	if (test_bit(GIF_INVALID, &ip->i_flags)) {
-		error = gfs2_inode_refresh(ip);
-		if (error)
-			return error;
-	}
-
-	if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
-	    (gl->gl_state == LM_ST_EXCLUSIVE) &&
-	    (gh->gh_state == LM_ST_EXCLUSIVE)) {
-		spin_lock(&sdp->sd_trunc_lock);
-		if (list_empty(&ip->i_trunc_list))
-			list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
-		spin_unlock(&sdp->sd_trunc_lock);
-		wake_up(&sdp->sd_quota_wait);
-		return 1;
-	}
-
-	return error;
-}
-
-/**
- * inode_go_dump - print information about an inode
- * @seq: The iterator
- * @ip: the inode
- *
- * Returns: 0 on success, -ENOBUFS when we run out of space
- */
-
-static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
-{
-	const struct gfs2_inode *ip = gl->gl_object;
-	if (ip == NULL)
-		return 0;
-	gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
-		  (unsigned long long)ip->i_no_formal_ino,
-		  (unsigned long long)ip->i_no_addr,
-		  IF2DT(ip->i_inode.i_mode), ip->i_flags,
-		  (unsigned int)ip->i_diskflags,
-		  (unsigned long long)i_size_read(&ip->i_inode));
-	return 0;
-}
-
-/**
- * trans_go_sync - promote/demote the transaction glock
- * @gl: the glock
- * @state: the requested state
- * @flags:
- *
- */
-
-static void trans_go_sync(struct gfs2_glock *gl)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-
-	if (gl->gl_state != LM_ST_UNLOCKED &&
-	    test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
-		gfs2_meta_syncfs(sdp);
-		gfs2_log_shutdown(sdp);
-	}
-}
-
-/**
- * trans_go_xmote_bh - After promoting/demoting the transaction glock
- * @gl: the glock
- *
- */
-
-static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
-{
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-	struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
-	struct gfs2_glock *j_gl = ip->i_gl;
-	struct gfs2_log_header_host head;
-	int error;
-
-	if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
-		j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
-
-		error = gfs2_find_jhead(sdp->sd_jdesc, &head);
-		if (error)
-			gfs2_consist(sdp);
-		if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
-			gfs2_consist(sdp);
-
-		/*  Initialize some head of the log stuff  */
-		if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
-			sdp->sd_log_sequence = head.lh_sequence + 1;
-			gfs2_log_pointers_init(sdp, head.lh_blkno);
-		}
-	}
-	return 0;
-}
-
-/**
- * trans_go_demote_ok
- * @gl: the glock
- *
- * Always returns 0
- */
-
-static int trans_go_demote_ok(const struct gfs2_glock *gl)
-{
-	return 0;
-}
-
-/**
- * iopen_go_callback - schedule the dcache entry for the inode to be deleted
- * @gl: the glock
- *
- * gl_spin lock is held while calling this
- */
-static void iopen_go_callback(struct gfs2_glock *gl)
-{
-	struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
-	struct gfs2_sbd *sdp = gl->gl_sbd;
-
-	if (sdp->sd_vfs->s_flags & MS_RDONLY)
-		return;
-
-	if (gl->gl_demote_state == LM_ST_UNLOCKED &&
-	    gl->gl_state == LM_ST_SHARED && ip) {
-		gfs2_glock_hold(gl);
-		if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
-			gfs2_glock_put_nolock(gl);
-	}
-}
-
-const struct gfs2_glock_operations gfs2_meta_glops = {
-	.go_type = LM_TYPE_META,
-};
-
-const struct gfs2_glock_operations gfs2_inode_glops = {
-	.go_xmote_th = inode_go_sync,
-	.go_inval = inode_go_inval,
-	.go_demote_ok = inode_go_demote_ok,
-	.go_lock = inode_go_lock,
-	.go_dump = inode_go_dump,
-	.go_type = LM_TYPE_INODE,
-	.go_flags = GLOF_ASPACE,
-};
-
-const struct gfs2_glock_operations gfs2_rgrp_glops = {
-	.go_xmote_th = rgrp_go_sync,
-	.go_inval = rgrp_go_inval,
-	.go_lock = gfs2_rgrp_go_lock,
-	.go_unlock = gfs2_rgrp_go_unlock,
-	.go_dump = gfs2_rgrp_dump,
-	.go_type = LM_TYPE_RGRP,
-	.go_flags = GLOF_ASPACE,
-};
-
-const struct gfs2_glock_operations gfs2_trans_glops = {
-	.go_xmote_th = trans_go_sync,
-	.go_xmote_bh = trans_go_xmote_bh,
-	.go_demote_ok = trans_go_demote_ok,
-	.go_type = LM_TYPE_NONDISK,
-};
-
-const struct gfs2_glock_operations gfs2_iopen_glops = {
-	.go_type = LM_TYPE_IOPEN,
-	.go_callback = iopen_go_callback,
-};
-
-const struct gfs2_glock_operations gfs2_flock_glops = {
-	.go_type = LM_TYPE_FLOCK,
-};
-
-const struct gfs2_glock_operations gfs2_nondisk_glops = {
-	.go_type = LM_TYPE_NONDISK,
-};
-
-const struct gfs2_glock_operations gfs2_quota_glops = {
-	.go_type = LM_TYPE_QUOTA,
-};
-
-const struct gfs2_glock_operations gfs2_journal_glops = {
-	.go_type = LM_TYPE_JOURNAL,
-};
-
-const struct gfs2_glock_operations *gfs2_glops_list[] = {
-	[LM_TYPE_META] = &gfs2_meta_glops,
-	[LM_TYPE_INODE] = &gfs2_inode_glops,
-	[LM_TYPE_RGRP] = &gfs2_rgrp_glops,
-	[LM_TYPE_IOPEN] = &gfs2_iopen_glops,
-	[LM_TYPE_FLOCK] = &gfs2_flock_glops,
-	[LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
-	[LM_TYPE_QUOTA] = &gfs2_quota_glops,
-	[LM_TYPE_JOURNAL] = &gfs2_journal_glops,
-};
-