[GFS2] The core of GFS2

This patch contains all the core files for GFS2.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 1620 insertions, 0 deletions

diff --git a/fs/gfs2/eattr.c b/fs/gfs2/eattr.c
new file mode 100644
index 000000000000..63a5cf1e2472
--- /dev/null
+++ b/fs/gfs2/eattr.c
@@ -0,0 +1,1620 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
+ * Copyright (C) 2004-2005 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 v.2.
+ */
+
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/completion.h>
+#include <linux/buffer_head.h>
+#include <linux/xattr.h>
+#include <asm/semaphore.h>
+#include <asm/uaccess.h>
+
+#include "gfs2.h"
+#include "acl.h"
+#include "eaops.h"
+#include "eattr.h"
+#include "glock.h"
+#include "inode.h"
+#include "meta_io.h"
+#include "quota.h"
+#include "rgrp.h"
+#include "trans.h"
+
+/**
+ * ea_calc_size - returns the acutal number of bytes the request will take up
+ *                (not counting any unstuffed data blocks)
+ * @sdp:
+ * @er:
+ * @size:
+ *
+ * Returns: 1 if the EA should be stuffed
+ */
+
+static int ea_calc_size(struct gfs2_sbd *sdp, struct gfs2_ea_request *er,
+                        unsigned int *size)
+{
+        *size = GFS2_EAREQ_SIZE_STUFFED(er);
+        if (*size <= sdp->sd_jbsize)
+                return 1;
+
+        *size = GFS2_EAREQ_SIZE_UNSTUFFED(sdp, er);
+
+        return 0;
+}
+
+static int ea_check_size(struct gfs2_sbd *sdp, struct gfs2_ea_request *er)
+{
+        unsigned int size;
+
+        if (er->er_data_len > GFS2_EA_MAX_DATA_LEN)
+                return -ERANGE;
+
+        ea_calc_size(sdp, er, &size);
+
+        /* This can only happen with 512 byte blocks */
+        if (size > sdp->sd_jbsize)
+                return -ERANGE;
+
+        return 0;
+}
+
+typedef int (*ea_call_t) (struct gfs2_inode *ip,
+                          struct buffer_head *bh,
+                          struct gfs2_ea_header *ea,
+                          struct gfs2_ea_header *prev,
+                          void *private);
+
+static int ea_foreach_i(struct gfs2_inode *ip, struct buffer_head *bh,
+                        ea_call_t ea_call, void *data)
+{
+        struct gfs2_ea_header *ea, *prev = NULL;
+        int error = 0;
+
+        if (gfs2_metatype_check(ip->i_sbd, bh, GFS2_METATYPE_EA))
+                return -EIO;
+
+        for (ea = GFS2_EA_BH2FIRST(bh);; prev = ea, ea = GFS2_EA2NEXT(ea)) {
+                if (!GFS2_EA_REC_LEN(ea))
+                        goto fail;
+                if (!(bh->b_data <= (char *)ea &&
+                      (char *)GFS2_EA2NEXT(ea) <=
+                      bh->b_data + bh->b_size))
+                        goto fail;
+                if (!GFS2_EATYPE_VALID(ea->ea_type))
+                        goto fail;
+
+                error = ea_call(ip, bh, ea, prev, data);
+                if (error)
+                        return error;
+
+                if (GFS2_EA_IS_LAST(ea)) {
+                        if ((char *)GFS2_EA2NEXT(ea) !=
+                            bh->b_data + bh->b_size)
+                                goto fail;
+                        break;
+                }
+        }
+
+        return error;
+
+ fail:
+        gfs2_consist_inode(ip);
+        return -EIO;
+}
+
+static int ea_foreach(struct gfs2_inode *ip, ea_call_t ea_call, void *data)
+{
+        struct buffer_head *bh, *eabh;
+        uint64_t *eablk, *end;
+        int error;
+
+        error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr,
+                               DIO_START | DIO_WAIT, &bh);
+        if (error)
+                return error;
+
+        if (!(ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT)) {
+                error = ea_foreach_i(ip, bh, ea_call, data);
+                goto out;
+        }
+
+        if (gfs2_metatype_check(ip->i_sbd, bh, GFS2_METATYPE_IN)) {
+                error = -EIO;
+                goto out;
+        }
+
+        eablk = (uint64_t *)(bh->b_data + sizeof(struct gfs2_meta_header));
+        end = eablk + ip->i_sbd->sd_inptrs;
+
+        for (; eablk < end; eablk++) {
+                uint64_t bn;
+
+                if (!*eablk)
+                        break;
+                bn = be64_to_cpu(*eablk);
+
+                error = gfs2_meta_read(ip->i_gl, bn, DIO_START | DIO_WAIT,
+                                       &eabh);
+                if (error)
+                        break;
+                error = ea_foreach_i(ip, eabh, ea_call, data);
+                brelse(eabh);
+                if (error)
+                        break;
+        }
+ out:
+        brelse(bh);
+
+        return error;
+}
+
+struct ea_find {
+        struct gfs2_ea_request *ef_er;
+        struct gfs2_ea_location *ef_el;
+};
+
+static int ea_find_i(struct gfs2_inode *ip, struct buffer_head *bh,
+                     struct gfs2_ea_header *ea, struct gfs2_ea_header *prev,
+                     void *private)
+{
+        struct ea_find *ef = private;
+        struct gfs2_ea_request *er = ef->ef_er;
+
+        if (ea->ea_type == GFS2_EATYPE_UNUSED)
+                return 0;
+
+        if (ea->ea_type == er->er_type) {
+                if (ea->ea_name_len == er->er_name_len &&
+                    !memcmp(GFS2_EA2NAME(ea), er->er_name, ea->ea_name_len)) {
+                        struct gfs2_ea_location *el = ef->ef_el;
+                        get_bh(bh);
+                        el->el_bh = bh;
+                        el->el_ea = ea;
+                        el->el_prev = prev;
+                        return 1;
+                }
+        }
+
+#if 0
+        else if ((ip->i_di.di_flags & GFS2_DIF_EA_PACKED) &&
+                 er->er_type == GFS2_EATYPE_SYS)
+                return 1;
+#endif
+
+        return 0;
+}
+
+int gfs2_ea_find(struct gfs2_inode *ip, struct gfs2_ea_request *er,
+                 struct gfs2_ea_location *el)
+{
+        struct ea_find ef;
+        int error;
+
+        ef.ef_er = er;
+        ef.ef_el = el;
+
+        memset(el, 0, sizeof(struct gfs2_ea_location));
+
+        error = ea_foreach(ip, ea_find_i, &ef);
+        if (error > 0)
+                return 0;
+
+        return error;
+}
+
+/**
+ * ea_dealloc_unstuffed -
+ * @ip:
+ * @bh:
+ * @ea:
+ * @prev:
+ * @private:
+ *
+ * Take advantage of the fact that all unstuffed blocks are
+ * allocated from the same RG.  But watch, this may not always
+ * be true.
+ *
+ * Returns: errno
+ */
+
+static int ea_dealloc_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
+                                struct gfs2_ea_header *ea,
+                                struct gfs2_ea_header *prev, void *private)
+{
+        int *leave = private;
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct gfs2_rgrpd *rgd;
+        struct gfs2_holder rg_gh;
+        struct buffer_head *dibh;
+        uint64_t *dataptrs, bn = 0;
+        uint64_t bstart = 0;
+        unsigned int blen = 0;
+        unsigned int blks = 0;
+        unsigned int x;
+        int error;
+
+        if (GFS2_EA_IS_STUFFED(ea))
+                return 0;
+
+        dataptrs = GFS2_EA2DATAPTRS(ea);
+        for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++)
+                if (*dataptrs) {
+                        blks++;
+                        bn = be64_to_cpu(*dataptrs);
+                }
+        if (!blks)
+                return 0;
+
+        rgd = gfs2_blk2rgrpd(sdp, bn);
+        if (!rgd) {
+                gfs2_consist_inode(ip);
+                return -EIO;
+        }
+
+        error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &rg_gh);
+        if (error)
+                return error;
+
+        error = gfs2_trans_begin(sdp, rgd->rd_ri.ri_length +
+                                 RES_DINODE + RES_EATTR + RES_STATFS +
+                                 RES_QUOTA, blks);
+        if (error)
+                goto out_gunlock;
+
+        gfs2_trans_add_bh(ip->i_gl, bh);
+
+        dataptrs = GFS2_EA2DATAPTRS(ea);
+        for (x = 0; x < ea->ea_num_ptrs; x++, dataptrs++) {
+                if (!*dataptrs)
+                        break;
+                bn = be64_to_cpu(*dataptrs);
+
+                if (bstart + blen == bn)
+                        blen++;
+                else {
+                        if (bstart)
+                                gfs2_free_meta(ip, bstart, blen);
+                        bstart = bn;
+                        blen = 1;
+                }
+
+                *dataptrs = 0;
+                if (!ip->i_di.di_blocks)
+                        gfs2_consist_inode(ip);
+                ip->i_di.di_blocks--;
+        }
+        if (bstart)
+                gfs2_free_meta(ip, bstart, blen);
+
+        if (prev && !leave) {
+                uint32_t len;
+
+                len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea);
+                prev->ea_rec_len = cpu_to_be32(len);
+
+                if (GFS2_EA_IS_LAST(ea))
+                        prev->ea_flags |= GFS2_EAFLAG_LAST;
+        } else {
+                ea->ea_type = GFS2_EATYPE_UNUSED;
+                ea->ea_num_ptrs = 0;
+        }
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                ip->i_di.di_ctime = get_seconds();
+                gfs2_trans_add_bh(ip->i_gl, dibh);
+                gfs2_dinode_out(&ip->i_di, dibh->b_data);
+                brelse(dibh);
+        }
+
+        gfs2_trans_end(sdp);
+
+ out_gunlock:
+        gfs2_glock_dq_uninit(&rg_gh);
+
+        return error;
+}
+
+static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
+                               struct gfs2_ea_header *ea,
+                               struct gfs2_ea_header *prev, int leave)
+{
+        struct gfs2_alloc *al;
+        int error;
+
+        al = gfs2_alloc_get(ip);
+
+        error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        if (error)
+                goto out_alloc;
+
+        error = gfs2_rindex_hold(ip->i_sbd, &al->al_ri_gh);
+        if (error)
+                goto out_quota;
+
+        error = ea_dealloc_unstuffed(ip,
+                                     bh, ea, prev,
+                                     (leave) ? &error : NULL);
+
+        gfs2_glock_dq_uninit(&al->al_ri_gh);
+
+ out_quota:
+        gfs2_quota_unhold(ip);
+
+ out_alloc:
+        gfs2_alloc_put(ip);
+
+        return error;
+}
+
+/******************************************************************************/
+
+static int gfs2_ea_repack_i(struct gfs2_inode *ip)
+{
+        return -EOPNOTSUPP;
+}
+
+int gfs2_ea_repack(struct gfs2_inode *ip)
+{
+        struct gfs2_holder gh;
+        int error;
+
+        error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
+        if (error)
+                return error;
+
+        /* Some sort of permissions checking would be nice */
+
+        error = gfs2_ea_repack_i(ip);
+
+        gfs2_glock_dq_uninit(&gh);
+
+        return error;
+}
+
+struct ea_list {
+        struct gfs2_ea_request *ei_er;
+        unsigned int ei_size;
+};
+
+static int ea_list_i(struct gfs2_inode *ip, struct buffer_head *bh,
+                     struct gfs2_ea_header *ea, struct gfs2_ea_header *prev,
+                     void *private)
+{
+        struct ea_list *ei = private;
+        struct gfs2_ea_request *er = ei->ei_er;
+        unsigned int ea_size = GFS2_EA_STRLEN(ea);
+
+        if (ea->ea_type == GFS2_EATYPE_UNUSED)
+                return 0;
+
+        if (er->er_data_len) {
+                char *prefix;
+                unsigned int l;
+                char c = 0;
+
+                if (ei->ei_size + ea_size > er->er_data_len)
+                        return -ERANGE;
+
+                if (ea->ea_type == GFS2_EATYPE_USR) {
+                        prefix = "user.";
+                        l = 5;
+                } else {
+                        prefix = "system.";
+                        l = 7;
+                }
+
+                memcpy(er->er_data + ei->ei_size,
+                       prefix, l);
+                memcpy(er->er_data + ei->ei_size + l,
+                       GFS2_EA2NAME(ea),
+                       ea->ea_name_len);
+                memcpy(er->er_data + ei->ei_size +
+                       ea_size - 1,
+                       &c, 1);
+        }
+
+        ei->ei_size += ea_size;
+
+        return 0;
+}
+
+/**
+ * gfs2_ea_list -
+ * @ip:
+ * @er:
+ *
+ * Returns: actual size of data on success, -errno on error
+ */
+
+int gfs2_ea_list(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_holder i_gh;
+        int error;
+
+        if (!er->er_data || !er->er_data_len) {
+                er->er_data = NULL;
+                er->er_data_len = 0;
+        }
+
+        error = gfs2_glock_nq_init(ip->i_gl,
+                                  LM_ST_SHARED, LM_FLAG_ANY,
+                                  &i_gh);
+        if (error)
+                return error;
+
+        if (ip->i_di.di_eattr) {
+                struct ea_list ei = { .ei_er = er, .ei_size = 0 };
+
+                error = ea_foreach(ip, ea_list_i, &ei);
+                if (!error)
+                        error = ei.ei_size;
+        }
+
+        gfs2_glock_dq_uninit(&i_gh);
+
+        return error;
+}
+
+/**
+ * ea_get_unstuffed - actually copies the unstuffed data into the
+ *                    request buffer
+ * @ip:
+ * @ea:
+ * @data:
+ *
+ * Returns: errno
+ */
+
+static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea,
+                            char *data)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct buffer_head **bh;
+        unsigned int amount = GFS2_EA_DATA_LEN(ea);
+        unsigned int nptrs = DIV_RU(amount, sdp->sd_jbsize);
+        uint64_t *dataptrs = GFS2_EA2DATAPTRS(ea);
+        unsigned int x;
+        int error = 0;
+
+        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_KERNEL);
+        if (!bh)
+                return -ENOMEM;
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs),
+                                       DIO_START, bh + x);
+                if (error) {
+                        while (x--)
+                                brelse(bh[x]);
+                        goto out;
+                }
+                dataptrs++;
+        }
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_reread(sdp, bh[x], DIO_WAIT);
+                if (error) {
+                        for (; x < nptrs; x++)
+                                brelse(bh[x]);
+                        goto out;
+                }
+                if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) {
+                        for (; x < nptrs; x++)
+                                brelse(bh[x]);
+                        error = -EIO;
+                        goto out;
+                }
+
+                memcpy(data,
+                       bh[x]->b_data + sizeof(struct gfs2_meta_header),
+                       (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize);
+
+                amount -= sdp->sd_jbsize;
+                data += sdp->sd_jbsize;
+
+                brelse(bh[x]);
+        }
+
+ out:
+        kfree(bh);
+
+        return error;
+}
+
+int gfs2_ea_get_copy(struct gfs2_inode *ip, struct gfs2_ea_location *el,
+                     char *data)
+{
+        if (GFS2_EA_IS_STUFFED(el->el_ea)) {
+                memcpy(data,
+                       GFS2_EA2DATA(el->el_ea),
+                       GFS2_EA_DATA_LEN(el->el_ea));
+                return 0;
+        } else
+                return ea_get_unstuffed(ip, el->el_ea, data);
+}
+
+/**
+ * gfs2_ea_get_i -
+ * @ip:
+ * @er:
+ *
+ * Returns: actual size of data on success, -errno on error
+ */
+
+int gfs2_ea_get_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_ea_location el;
+        int error;
+
+        if (!ip->i_di.di_eattr)
+                return -ENODATA;
+
+        error = gfs2_ea_find(ip, er, &el);
+        if (error)
+                return error;
+        if (!el.el_ea)
+                return -ENODATA;
+
+        if (er->er_data_len) {
+                if (GFS2_EA_DATA_LEN(el.el_ea) > er->er_data_len)
+                        error =  -ERANGE;
+                else
+                        error = gfs2_ea_get_copy(ip, &el, er->er_data);
+        }
+        if (!error)
+                error = GFS2_EA_DATA_LEN(el.el_ea);
+
+        brelse(el.el_bh);
+
+        return error;
+}
+
+/**
+ * gfs2_ea_get -
+ * @ip:
+ * @er:
+ *
+ * Returns: actual size of data on success, -errno on error
+ */
+
+int gfs2_ea_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_holder i_gh;
+        int error;
+
+        if (!er->er_name_len ||
+            er->er_name_len > GFS2_EA_MAX_NAME_LEN)
+                return -EINVAL;
+        if (!er->er_data || !er->er_data_len) {
+                er->er_data = NULL;
+                er->er_data_len = 0;
+        }
+
+        error = gfs2_glock_nq_init(ip->i_gl,
+                                  LM_ST_SHARED, LM_FLAG_ANY,
+                                  &i_gh);
+        if (error)
+                return error;
+
+        error = gfs2_ea_ops[er->er_type]->eo_get(ip, er);
+
+        gfs2_glock_dq_uninit(&i_gh);
+
+        return error;
+}
+
+/**
+ * ea_alloc_blk - allocates a new block for extended attributes.
+ * @ip: A pointer to the inode that's getting extended attributes
+ * @bhp:
+ *
+ * Returns: errno
+ */
+
+static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct gfs2_ea_header *ea;
+        uint64_t block;
+
+        block = gfs2_alloc_meta(ip);
+
+        *bhp = gfs2_meta_new(ip->i_gl, block);
+        gfs2_trans_add_bh(ip->i_gl, *bhp);
+        gfs2_metatype_set(*bhp, GFS2_METATYPE_EA, GFS2_FORMAT_EA);
+        gfs2_buffer_clear_tail(*bhp, sizeof(struct gfs2_meta_header));
+
+        ea = GFS2_EA_BH2FIRST(*bhp);
+        ea->ea_rec_len = cpu_to_be32(sdp->sd_jbsize);
+        ea->ea_type = GFS2_EATYPE_UNUSED;
+        ea->ea_flags = GFS2_EAFLAG_LAST;
+        ea->ea_num_ptrs = 0;
+
+        ip->i_di.di_blocks++;
+
+        return 0;
+}
+
+/**
+ * ea_write - writes the request info to an ea, creating new blocks if
+ *            necessary
+ * @ip:  inode that is being modified
+ * @ea:  the location of the new ea in a block
+ * @er: the write request
+ *
+ * Note: does not update ea_rec_len or the GFS2_EAFLAG_LAST bin of ea_flags
+ *
+ * returns : errno
+ */
+
+static int ea_write(struct gfs2_inode *ip, struct gfs2_ea_header *ea,
+                    struct gfs2_ea_request *er)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+
+        ea->ea_data_len = cpu_to_be32(er->er_data_len);
+        ea->ea_name_len = er->er_name_len;
+        ea->ea_type = er->er_type;
+        ea->__pad = 0;
+
+        memcpy(GFS2_EA2NAME(ea), er->er_name, er->er_name_len);
+
+        if (GFS2_EAREQ_SIZE_STUFFED(er) <= sdp->sd_jbsize) {
+                ea->ea_num_ptrs = 0;
+                memcpy(GFS2_EA2DATA(ea), er->er_data, er->er_data_len);
+        } else {
+                uint64_t *dataptr = GFS2_EA2DATAPTRS(ea);
+                const char *data = er->er_data;
+                unsigned int data_len = er->er_data_len;
+                unsigned int copy;
+                unsigned int x;
+
+                ea->ea_num_ptrs = DIV_RU(er->er_data_len, sdp->sd_jbsize);
+                for (x = 0; x < ea->ea_num_ptrs; x++) {
+                        struct buffer_head *bh;
+                        uint64_t block;
+                        int mh_size = sizeof(struct gfs2_meta_header);
+
+                        block = gfs2_alloc_meta(ip);
+
+                        bh = gfs2_meta_new(ip->i_gl, block);
+                        gfs2_trans_add_bh(ip->i_gl, bh);
+                        gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED);
+
+                        ip->i_di.di_blocks++;
+
+                        copy = (data_len > sdp->sd_jbsize) ? sdp->sd_jbsize :
+                                                             data_len;
+                        memcpy(bh->b_data + mh_size, data, copy);
+                        if (copy < sdp->sd_jbsize)
+                                memset(bh->b_data + mh_size + copy, 0,
+                                       sdp->sd_jbsize - copy);
+
+                        *dataptr++ = cpu_to_be64((uint64_t)bh->b_blocknr);
+                        data += copy;
+                        data_len -= copy;
+
+                        brelse(bh);
+                }
+
+                gfs2_assert_withdraw(sdp, !data_len);
+        }
+
+        return 0;
+}
+
+typedef int (*ea_skeleton_call_t) (struct gfs2_inode *ip,
+                                   struct gfs2_ea_request *er,
+                                   void *private);
+
+static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
+                             unsigned int blks,
+                             ea_skeleton_call_t skeleton_call,
+                             void *private)
+{
+        struct gfs2_alloc *al;
+        struct buffer_head *dibh;
+        int error;
+
+        al = gfs2_alloc_get(ip);
+
+        error = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        if (error)
+                goto out;
+
+        error = gfs2_quota_check(ip, ip->i_di.di_uid, ip->i_di.di_gid);
+        if (error)
+                goto out_gunlock_q;
+
+        al->al_requested = blks;
+
+        error = gfs2_inplace_reserve(ip);
+        if (error)
+                goto out_gunlock_q;
+
+        error = gfs2_trans_begin(ip->i_sbd,
+                                 blks + al->al_rgd->rd_ri.ri_length +
+                                 RES_DINODE + RES_STATFS + RES_QUOTA, 0);
+        if (error)
+                goto out_ipres;
+
+        error = skeleton_call(ip, er, private);
+        if (error)
+                goto out_end_trans;
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                if (er->er_flags & GFS2_ERF_MODE) {
+                        gfs2_assert_withdraw(ip->i_sbd,
+                                            (ip->i_di.di_mode & S_IFMT) ==
+                                            (er->er_mode & S_IFMT));
+                        ip->i_di.di_mode = er->er_mode;
+                }
+                ip->i_di.di_ctime = get_seconds();
+                gfs2_trans_add_bh(ip->i_gl, dibh);
+                gfs2_dinode_out(&ip->i_di, dibh->b_data);
+                brelse(dibh);
+        }
+
+ out_end_trans:
+        gfs2_trans_end(ip->i_sbd);
+
+ out_ipres:
+        gfs2_inplace_release(ip);
+
+ out_gunlock_q:
+        gfs2_quota_unlock(ip);
+
+ out:
+        gfs2_alloc_put(ip);
+
+        return error;
+}
+
+static int ea_init_i(struct gfs2_inode *ip, struct gfs2_ea_request *er,
+                     void *private)
+{
+        struct buffer_head *bh;
+        int error;
+
+        error = ea_alloc_blk(ip, &bh);
+        if (error)
+                return error;
+
+        ip->i_di.di_eattr = bh->b_blocknr;
+        error = ea_write(ip, GFS2_EA_BH2FIRST(bh), er);
+
+        brelse(bh);
+
+        return error;
+}
+
+/**
+ * ea_init - initializes a new eattr block
+ * @ip:
+ * @er:
+ *
+ * Returns: errno
+ */
+
+static int ea_init(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        unsigned int jbsize = ip->i_sbd->sd_jbsize;
+        unsigned int blks = 1;
+
+        if (GFS2_EAREQ_SIZE_STUFFED(er) > jbsize)
+                blks += DIV_RU(er->er_data_len, jbsize);
+
+        return ea_alloc_skeleton(ip, er, blks, ea_init_i, NULL);
+}
+
+static struct gfs2_ea_header *ea_split_ea(struct gfs2_ea_header *ea)
+{
+        uint32_t ea_size = GFS2_EA_SIZE(ea);
+        struct gfs2_ea_header *new = (struct gfs2_ea_header *)((char *)ea + ea_size);
+        uint32_t new_size = GFS2_EA_REC_LEN(ea) - ea_size;
+        int last = ea->ea_flags & GFS2_EAFLAG_LAST;
+
+        ea->ea_rec_len = cpu_to_be32(ea_size);
+        ea->ea_flags ^= last;
+
+        new->ea_rec_len = cpu_to_be32(new_size);
+        new->ea_flags = last;
+
+        return new;
+}
+
+static void ea_set_remove_stuffed(struct gfs2_inode *ip,
+                                  struct gfs2_ea_location *el)
+{
+        struct gfs2_ea_header *ea = el->el_ea;
+        struct gfs2_ea_header *prev = el->el_prev;
+        uint32_t len;
+
+        gfs2_trans_add_bh(ip->i_gl, el->el_bh);
+
+        if (!prev || !GFS2_EA_IS_STUFFED(ea)) {
+                ea->ea_type = GFS2_EATYPE_UNUSED;
+                return;
+        } else if (GFS2_EA2NEXT(prev) != ea) {
+                prev = GFS2_EA2NEXT(prev);
+                gfs2_assert_withdraw(ip->i_sbd, GFS2_EA2NEXT(prev) == ea);
+        }
+
+        len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea);
+        prev->ea_rec_len = cpu_to_be32(len);
+
+        if (GFS2_EA_IS_LAST(ea))
+                prev->ea_flags |= GFS2_EAFLAG_LAST;
+}
+
+struct ea_set {
+        int ea_split;
+
+        struct gfs2_ea_request *es_er;
+        struct gfs2_ea_location *es_el;
+
+        struct buffer_head *es_bh;
+        struct gfs2_ea_header *es_ea;
+};
+
+static int ea_set_simple_noalloc(struct gfs2_inode *ip, struct buffer_head *bh,
+                                 struct gfs2_ea_header *ea, struct ea_set *es)
+{
+        struct gfs2_ea_request *er = es->es_er;
+        struct buffer_head *dibh;
+        int error;
+
+        error = gfs2_trans_begin(ip->i_sbd, RES_DINODE + 2 * RES_EATTR, 0);
+        if (error)
+                return error;
+
+        gfs2_trans_add_bh(ip->i_gl, bh);
+
+        if (es->ea_split)
+                ea = ea_split_ea(ea);
+
+        ea_write(ip, ea, er);
+
+        if (es->es_el)
+                ea_set_remove_stuffed(ip, es->es_el);
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (error)
+                goto out;
+
+        if (er->er_flags & GFS2_ERF_MODE) {
+                gfs2_assert_withdraw(ip->i_sbd,
+                        (ip->i_di.di_mode & S_IFMT) == (er->er_mode & S_IFMT));
+                ip->i_di.di_mode = er->er_mode;
+        }
+        ip->i_di.di_ctime = get_seconds();
+        gfs2_trans_add_bh(ip->i_gl, dibh);
+        gfs2_dinode_out(&ip->i_di, dibh->b_data);
+        brelse(dibh);
+ out:
+        gfs2_trans_end(ip->i_sbd);
+
+        return error;
+}
+
+static int ea_set_simple_alloc(struct gfs2_inode *ip,
+                               struct gfs2_ea_request *er, void *private)
+{
+        struct ea_set *es = private;
+        struct gfs2_ea_header *ea = es->es_ea;
+        int error;
+
+        gfs2_trans_add_bh(ip->i_gl, es->es_bh);
+
+        if (es->ea_split)
+                ea = ea_split_ea(ea);
+
+        error = ea_write(ip, ea, er);
+        if (error)
+                return error;
+
+        if (es->es_el)
+                ea_set_remove_stuffed(ip, es->es_el);
+
+        return 0;
+}
+
+static int ea_set_simple(struct gfs2_inode *ip, struct buffer_head *bh,
+                         struct gfs2_ea_header *ea, struct gfs2_ea_header *prev,
+                         void *private)
+{
+        struct ea_set *es = private;
+        unsigned int size;
+        int stuffed;
+        int error;
+
+        stuffed = ea_calc_size(ip->i_sbd, es->es_er, &size);
+
+        if (ea->ea_type == GFS2_EATYPE_UNUSED) {
+                if (GFS2_EA_REC_LEN(ea) < size)
+                        return 0;
+                if (!GFS2_EA_IS_STUFFED(ea)) {
+                        error = ea_remove_unstuffed(ip, bh, ea, prev, 1);
+                        if (error)
+                                return error;
+                }
+                es->ea_split = 0;
+        } else if (GFS2_EA_REC_LEN(ea) - GFS2_EA_SIZE(ea) >= size)
+                es->ea_split = 1;
+        else
+                return 0;
+
+        if (stuffed) {
+                error = ea_set_simple_noalloc(ip, bh, ea, es);
+                if (error)
+                        return error;
+        } else {
+                unsigned int blks;
+
+                es->es_bh = bh;
+                es->es_ea = ea;
+                blks = 2 + DIV_RU(es->es_er->er_data_len, ip->i_sbd->sd_jbsize);
+
+                error = ea_alloc_skeleton(ip, es->es_er, blks,
+                                          ea_set_simple_alloc, es);
+                if (error)
+                        return error;
+        }
+
+        return 1;
+}
+
+static int ea_set_block(struct gfs2_inode *ip, struct gfs2_ea_request *er,
+                        void *private)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct buffer_head *indbh, *newbh;
+        uint64_t *eablk;
+        int error;
+        int mh_size = sizeof(struct gfs2_meta_header);
+
+        if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) {
+                uint64_t *end;
+
+                error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr,
+                                       DIO_START | DIO_WAIT, &indbh);
+                if (error)
+                        return error;
+
+                if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) {
+                        error = -EIO;
+                        goto out;
+                }
+
+                eablk = (uint64_t *)(indbh->b_data + mh_size);
+                end = eablk + sdp->sd_inptrs;
+
+                for (; eablk < end; eablk++)
+                        if (!*eablk)
+                                break;
+
+                if (eablk == end) {
+                        error = -ENOSPC;
+                        goto out;
+                }
+
+                gfs2_trans_add_bh(ip->i_gl, indbh);
+        } else {
+                uint64_t blk;
+
+                blk = gfs2_alloc_meta(ip);
+
+                indbh = gfs2_meta_new(ip->i_gl, blk);
+                gfs2_trans_add_bh(ip->i_gl, indbh);
+                gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN);
+                gfs2_buffer_clear_tail(indbh, mh_size);
+
+                eablk = (uint64_t *)(indbh->b_data + mh_size);
+                *eablk = cpu_to_be64(ip->i_di.di_eattr);
+                ip->i_di.di_eattr = blk;
+                ip->i_di.di_flags |= GFS2_DIF_EA_INDIRECT;
+                ip->i_di.di_blocks++;
+
+                eablk++;
+        }
+
+        error = ea_alloc_blk(ip, &newbh);
+        if (error)
+                goto out;
+
+        *eablk = cpu_to_be64((uint64_t)newbh->b_blocknr);
+        error = ea_write(ip, GFS2_EA_BH2FIRST(newbh), er);
+        brelse(newbh);
+        if (error)
+                goto out;
+
+        if (private)
+                ea_set_remove_stuffed(ip, (struct gfs2_ea_location *)private);
+
+ out:
+        brelse(indbh);
+
+        return error;
+}
+
+static int ea_set_i(struct gfs2_inode *ip, struct gfs2_ea_request *er,
+                    struct gfs2_ea_location *el)
+{
+        struct ea_set es;
+        unsigned int blks = 2;
+        int error;
+
+        memset(&es, 0, sizeof(struct ea_set));
+        es.es_er = er;
+        es.es_el = el;
+
+        error = ea_foreach(ip, ea_set_simple, &es);
+        if (error > 0)
+                return 0;
+        if (error)
+                return error;
+
+        if (!(ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT))
+                blks++;
+        if (GFS2_EAREQ_SIZE_STUFFED(er) > ip->i_sbd->sd_jbsize)
+                blks += DIV_RU(er->er_data_len, ip->i_sbd->sd_jbsize);
+
+        return ea_alloc_skeleton(ip, er, blks, ea_set_block, el);
+}
+
+static int ea_set_remove_unstuffed(struct gfs2_inode *ip,
+                                   struct gfs2_ea_location *el)
+{
+        if (el->el_prev && GFS2_EA2NEXT(el->el_prev) != el->el_ea) {
+                el->el_prev = GFS2_EA2NEXT(el->el_prev);
+                gfs2_assert_withdraw(ip->i_sbd,
+                                     GFS2_EA2NEXT(el->el_prev) == el->el_ea);
+        }
+
+        return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev,0);
+}
+
+int gfs2_ea_set_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_ea_location el;
+        int error;
+
+        if (!ip->i_di.di_eattr) {
+                if (er->er_flags & XATTR_REPLACE)
+                        return -ENODATA;
+                return ea_init(ip, er);
+        }
+
+        error = gfs2_ea_find(ip, er, &el);
+        if (error)
+                return error;
+
+        if (el.el_ea) {
+                if (ip->i_di.di_flags & GFS2_DIF_APPENDONLY) {
+                        brelse(el.el_bh);
+                        return -EPERM;
+                }
+
+                error = -EEXIST;
+                if (!(er->er_flags & XATTR_CREATE)) {
+                        int unstuffed = !GFS2_EA_IS_STUFFED(el.el_ea);
+                        error = ea_set_i(ip, er, &el);
+                        if (!error && unstuffed)
+                                ea_set_remove_unstuffed(ip, &el);
+                }
+
+                brelse(el.el_bh);
+        } else {
+                error = -ENODATA;
+                if (!(er->er_flags & XATTR_REPLACE))
+                        error = ea_set_i(ip, er, NULL);
+        }
+
+        return error;
+}
+
+int gfs2_ea_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_holder i_gh;
+        int error;
+
+        if (!er->er_name_len ||
+            er->er_name_len > GFS2_EA_MAX_NAME_LEN)
+                return -EINVAL;
+        if (!er->er_data || !er->er_data_len) {
+                er->er_data = NULL;
+                er->er_data_len = 0;
+        }
+        error = ea_check_size(ip->i_sbd, er);
+        if (error)
+                return error;
+
+        error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
+        if (error)
+                return error;
+
+        if (IS_IMMUTABLE(ip->i_vnode))
+                error = -EPERM;
+        else
+                error = gfs2_ea_ops[er->er_type]->eo_set(ip, er);
+
+        gfs2_glock_dq_uninit(&i_gh);
+
+        return error;
+}
+
+static int ea_remove_stuffed(struct gfs2_inode *ip, struct gfs2_ea_location *el)
+{
+        struct gfs2_ea_header *ea = el->el_ea;
+        struct gfs2_ea_header *prev = el->el_prev;
+        struct buffer_head *dibh;
+        int error;
+
+        error = gfs2_trans_begin(ip->i_sbd, RES_DINODE + RES_EATTR, 0);
+        if (error)
+                return error;
+
+        gfs2_trans_add_bh(ip->i_gl, el->el_bh);
+
+        if (prev) {
+                uint32_t len;
+
+                len = GFS2_EA_REC_LEN(prev) + GFS2_EA_REC_LEN(ea);
+                prev->ea_rec_len = cpu_to_be32(len);
+
+                if (GFS2_EA_IS_LAST(ea))
+                        prev->ea_flags |= GFS2_EAFLAG_LAST;
+        } else
+                ea->ea_type = GFS2_EATYPE_UNUSED;
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                ip->i_di.di_ctime = get_seconds();
+                gfs2_trans_add_bh(ip->i_gl, dibh);
+                gfs2_dinode_out(&ip->i_di, dibh->b_data);
+                brelse(dibh);
+        }       
+
+        gfs2_trans_end(ip->i_sbd);
+
+        return error;
+}
+
+int gfs2_ea_remove_i(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_ea_location el;
+        int error;
+
+        if (!ip->i_di.di_eattr)
+                return -ENODATA;
+
+        error = gfs2_ea_find(ip, er, &el);
+        if (error)
+                return error;
+        if (!el.el_ea)
+                return -ENODATA;
+
+        if (GFS2_EA_IS_STUFFED(el.el_ea))
+                error = ea_remove_stuffed(ip, &el);
+        else
+                error = ea_remove_unstuffed(ip, el.el_bh, el.el_ea, el.el_prev,
+                                            0);
+
+        brelse(el.el_bh);
+
+        return error;
+}
+
+/**
+ * gfs2_ea_remove - sets (or creates or replaces) an extended attribute
+ * @ip: pointer to the inode of the target file
+ * @er: request information
+ *
+ * Returns: errno
+ */
+
+int gfs2_ea_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+        struct gfs2_holder i_gh;
+        int error;
+
+        if (!er->er_name_len || er->er_name_len > GFS2_EA_MAX_NAME_LEN)
+                return -EINVAL;
+
+        error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &i_gh);
+        if (error)
+                return error;
+
+        if (IS_IMMUTABLE(ip->i_vnode) || IS_APPEND(ip->i_vnode))
+                error = -EPERM;
+        else
+                error = gfs2_ea_ops[er->er_type]->eo_remove(ip, er);
+
+        gfs2_glock_dq_uninit(&i_gh);
+
+        return error;
+}
+
+static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip,
+                                  struct gfs2_ea_header *ea, char *data)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct buffer_head **bh;
+        unsigned int amount = GFS2_EA_DATA_LEN(ea);
+        unsigned int nptrs = DIV_RU(amount, sdp->sd_jbsize);
+        uint64_t *dataptrs = GFS2_EA2DATAPTRS(ea);
+        unsigned int x;
+        int error;
+
+        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_KERNEL);
+        if (!bh)
+                return -ENOMEM;
+
+        error = gfs2_trans_begin(sdp, nptrs + RES_DINODE, 0);
+        if (error)
+                goto out;
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs),
+                                       DIO_START, bh + x);
+                if (error) {
+                        while (x--)
+                                brelse(bh[x]);
+                        goto fail;
+                }
+                dataptrs++;
+        }
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_reread(sdp, bh[x], DIO_WAIT);
+                if (error) {
+                        for (; x < nptrs; x++)
+                                brelse(bh[x]);
+                        goto fail;
+                }
+                if (gfs2_metatype_check(sdp, bh[x], GFS2_METATYPE_ED)) {
+                        for (; x < nptrs; x++)
+                                brelse(bh[x]);
+                        error = -EIO;
+                        goto fail;
+                }
+
+                gfs2_trans_add_bh(ip->i_gl, bh[x]);
+
+                memcpy(bh[x]->b_data + sizeof(struct gfs2_meta_header),
+                       data,
+                       (sdp->sd_jbsize > amount) ? amount : sdp->sd_jbsize);
+
+                amount -= sdp->sd_jbsize;
+                data += sdp->sd_jbsize;
+
+                brelse(bh[x]);
+        }
+
+ out:
+        kfree(bh);
+
+        return error;
+
+ fail:
+        gfs2_trans_end(sdp);
+        kfree(bh);
+
+        return error;
+}
+
+int gfs2_ea_acl_chmod(struct gfs2_inode *ip, struct gfs2_ea_location *el,
+                      struct iattr *attr, char *data)
+{
+        struct buffer_head *dibh;
+        int error;
+
+        if (GFS2_EA_IS_STUFFED(el->el_ea)) {
+                error = gfs2_trans_begin(ip->i_sbd, RES_DINODE + RES_EATTR, 0);
+                if (error)
+                        return error;
+
+                gfs2_trans_add_bh(ip->i_gl, el->el_bh);
+                memcpy(GFS2_EA2DATA(el->el_ea),
+                       data,
+                       GFS2_EA_DATA_LEN(el->el_ea));
+        } else
+                error = ea_acl_chmod_unstuffed(ip, el->el_ea, data);
+
+        if (error)
+                return error;
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                error = inode_setattr(ip->i_vnode, attr);
+                gfs2_assert_warn(ip->i_sbd, !error);
+                gfs2_inode_attr_out(ip);
+                gfs2_trans_add_bh(ip->i_gl, dibh);
+                gfs2_dinode_out(&ip->i_di, dibh->b_data);
+                brelse(dibh);
+        }
+
+        gfs2_trans_end(ip->i_sbd);
+
+        return error;
+}
+
+static int ea_dealloc_indirect(struct gfs2_inode *ip)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct gfs2_rgrp_list rlist;
+        struct buffer_head *indbh, *dibh;
+        uint64_t *eablk, *end;
+        unsigned int rg_blocks = 0;
+        uint64_t bstart = 0;
+        unsigned int blen = 0;
+        unsigned int blks = 0;
+        unsigned int x;
+        int error;
+
+        memset(&rlist, 0, sizeof(struct gfs2_rgrp_list));
+
+        error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr,
+                               DIO_START | DIO_WAIT, &indbh);
+        if (error)
+                return error;
+
+        if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) {
+                error = -EIO;
+                goto out;
+        }
+
+        eablk = (uint64_t *)(indbh->b_data + sizeof(struct gfs2_meta_header));
+        end = eablk + sdp->sd_inptrs;
+
+        for (; eablk < end; eablk++) {
+                uint64_t bn;
+
+                if (!*eablk)
+                        break;
+                bn = be64_to_cpu(*eablk);
+
+                if (bstart + blen == bn)
+                        blen++;
+                else {
+                        if (bstart)
+                                gfs2_rlist_add(sdp, &rlist, bstart);
+                        bstart = bn;
+                        blen = 1;
+                }
+                blks++;
+        }
+        if (bstart)
+                gfs2_rlist_add(sdp, &rlist, bstart);
+        else
+                goto out;
+
+        gfs2_rlist_alloc(&rlist, LM_ST_EXCLUSIVE, 0);
+
+        for (x = 0; x < rlist.rl_rgrps; x++) {
+                struct gfs2_rgrpd *rgd;
+                rgd = get_gl2rgd(rlist.rl_ghs[x].gh_gl);
+                rg_blocks += rgd->rd_ri.ri_length;
+        }
+
+        error = gfs2_glock_nq_m(rlist.rl_rgrps, rlist.rl_ghs);
+        if (error)
+                goto out_rlist_free;
+
+        error = gfs2_trans_begin(sdp, rg_blocks + RES_DINODE +
+                                 RES_INDIRECT + RES_STATFS +
+                                 RES_QUOTA, blks);
+        if (error)
+                goto out_gunlock;
+
+        gfs2_trans_add_bh(ip->i_gl, indbh);
+
+        eablk = (uint64_t *)(indbh->b_data + sizeof(struct gfs2_meta_header));
+        bstart = 0;
+        blen = 0;
+
+        for (; eablk < end; eablk++) {
+                uint64_t bn;
+
+                if (!*eablk)
+                        break;
+                bn = be64_to_cpu(*eablk);
+
+                if (bstart + blen == bn)
+                        blen++;
+                else {
+                        if (bstart)
+                                gfs2_free_meta(ip, bstart, blen);
+                        bstart = bn;
+                        blen = 1;
+                }
+
+                *eablk = 0;
+                if (!ip->i_di.di_blocks)
+                        gfs2_consist_inode(ip);
+                ip->i_di.di_blocks--;
+        }
+        if (bstart)
+                gfs2_free_meta(ip, bstart, blen);
+
+        ip->i_di.di_flags &= ~GFS2_DIF_EA_INDIRECT;
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                gfs2_trans_add_bh(ip->i_gl, dibh);
+                gfs2_dinode_out(&ip->i_di, dibh->b_data);
+                brelse(dibh);
+        }
+
+        gfs2_trans_end(sdp);
+
+ out_gunlock:
+        gfs2_glock_dq_m(rlist.rl_rgrps, rlist.rl_ghs);
+
+ out_rlist_free:
+        gfs2_rlist_free(&rlist);
+
+ out:
+        brelse(indbh);
+
+        return error;
+}
+
+static int ea_dealloc_block(struct gfs2_inode *ip)
+{
+        struct gfs2_sbd *sdp = ip->i_sbd;
+        struct gfs2_alloc *al = &ip->i_alloc;
+        struct gfs2_rgrpd *rgd;
+        struct buffer_head *dibh;
+        int error;
+
+        rgd = gfs2_blk2rgrpd(sdp, ip->i_di.di_eattr);
+        if (!rgd) {
+                gfs2_consist_inode(ip);
+                return -EIO;
+        }
+
+        error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
+                                   &al->al_rgd_gh);
+        if (error)
+                return error;
+
+        error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_DINODE +
+                                 RES_STATFS + RES_QUOTA, 1);
+        if (error)
+                goto out_gunlock;
+
+        gfs2_free_meta(ip, ip->i_di.di_eattr, 1);
+
+        ip->i_di.di_eattr = 0;
+        if (!ip->i_di.di_blocks)
+                gfs2_consist_inode(ip);
+        ip->i_di.di_blocks--;
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                gfs2_trans_add_bh(ip->i_gl, dibh);
+                gfs2_dinode_out(&ip->i_di, dibh->b_data);
+                brelse(dibh);
+        }
+
+        gfs2_trans_end(sdp);
+
+ out_gunlock:
+        gfs2_glock_dq_uninit(&al->al_rgd_gh);
+
+        return error;
+}
+
+/**
+ * gfs2_ea_dealloc - deallocate the extended attribute fork
+ * @ip: the inode
+ *
+ * Returns: errno
+ */
+
+int gfs2_ea_dealloc(struct gfs2_inode *ip)
+{
+        struct gfs2_alloc *al;
+        int error;
+
+        al = gfs2_alloc_get(ip);
+
+        error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        if (error)
+                goto out_alloc;
+
+        error = gfs2_rindex_hold(ip->i_sbd, &al->al_ri_gh);
+        if (error)
+                goto out_quota;
+
+        error = ea_foreach(ip, ea_dealloc_unstuffed, NULL);
+        if (error)
+                goto out_rindex;
+
+        if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) {
+                error = ea_dealloc_indirect(ip);
+                if (error)
+                        goto out_rindex;
+        }
+
+        error = ea_dealloc_block(ip);
+
+ out_rindex:
+        gfs2_glock_dq_uninit(&al->al_ri_gh);
+
+ out_quota:
+        gfs2_quota_unhold(ip);
+
+ out_alloc:
+        gfs2_alloc_put(ip);
+
+        return error;
+}
+
+/**
+ * gfs2_get_eattr_meta - return all the eattr blocks of a file
+ * @dip: the directory
+ * @ub: the structure representing the user buffer to copy to
+ *
+ * Returns: errno
+ */
+
+int gfs2_get_eattr_meta(struct gfs2_inode *ip, struct gfs2_user_buffer *ub)
+{
+        struct buffer_head *bh;
+        int error;
+
+        error = gfs2_meta_read(ip->i_gl, ip->i_di.di_eattr,
+                               DIO_START | DIO_WAIT, &bh);
+        if (error)
+                return error;
+
+        gfs2_add_bh_to_ub(ub, bh);
+
+        if (ip->i_di.di_flags & GFS2_DIF_EA_INDIRECT) {
+                struct buffer_head *eabh;
+                uint64_t *eablk, *end;
+
+                if (gfs2_metatype_check(ip->i_sbd, bh, GFS2_METATYPE_IN)) {
+                        error = -EIO;
+                        goto out;
+                }
+
+                eablk = (uint64_t *)(bh->b_data +
+                                     sizeof(struct gfs2_meta_header));
+                end = eablk + ip->i_sbd->sd_inptrs;
+
+                for (; eablk < end; eablk++) {
+                        uint64_t bn;
+
+                        if (!*eablk)
+                                break;
+                        bn = be64_to_cpu(*eablk);
+
+                        error = gfs2_meta_read(ip->i_gl, bn,
+                                               DIO_START | DIO_WAIT, &eabh);
+                        if (error)
+                                break;
+                        gfs2_add_bh_to_ub(ub, eabh);
+                        brelse(eabh);
+                        if (error)
+                                break;
+                }
+        }
+
+ out:
+        brelse(bh);
+
+        return error;
+}
+