GFS2: Rename eattr.[ch] as xattr.[ch]

Use the more conventional name for the extended attribute
support code. Update all the places which care.

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

1 files changed, 1558 insertions, 0 deletions

diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
new file mode 100644
index 000000000000..34ae9ba4c9fe
--- /dev/null
+++ b/fs/gfs2/xattr.c
@@ -0,0 +1,1558 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
+ * Copyright (C) 2004-2006 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/slab.h>
+#include <linux/spinlock.h>
+#include <linux/completion.h>
+#include <linux/buffer_head.h>
+#include <linux/xattr.h>
+#include <linux/gfs2_ondisk.h>
+#include <asm/uaccess.h>
+
+#include "gfs2.h"
+#include "incore.h"
+#include "acl.h"
+#include "xattr.h"
+#include "glock.h"
+#include "inode.h"
+#include "meta_io.h"
+#include "quota.h"
+#include "rgrp.h"
+#include "trans.h"
+#include "util.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, unsigned int nsize, size_t dsize,
+                        unsigned int *size)
+{
+        unsigned int jbsize = sdp->sd_jbsize;
+
+        /* Stuffed */
+        *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize + dsize, 8);
+
+        if (*size <= jbsize)
+                return 1;
+
+        /* Unstuffed */
+        *size = ALIGN(sizeof(struct gfs2_ea_header) + nsize +
+                      (sizeof(__be64) * DIV_ROUND_UP(dsize, jbsize)), 8);
+
+        return 0;
+}
+
+static int ea_check_size(struct gfs2_sbd *sdp, unsigned int nsize, size_t dsize)
+{
+        unsigned int size;
+
+        if (dsize > GFS2_EA_MAX_DATA_LEN)
+                return -ERANGE;
+
+        ea_calc_size(sdp, nsize, dsize, &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(GFS2_SB(&ip->i_inode), 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;
+        __be64 *eablk, *end;
+        int error;
+
+        error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT, &bh);
+        if (error)
+                return error;
+
+        if (!(ip->i_diskflags & GFS2_DIF_EA_INDIRECT)) {
+                error = ea_foreach_i(ip, bh, ea_call, data);
+                goto out;
+        }
+
+        if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), bh, GFS2_METATYPE_IN)) {
+                error = -EIO;
+                goto out;
+        }
+
+        eablk = (__be64 *)(bh->b_data + sizeof(struct gfs2_meta_header));
+        end = eablk + GFS2_SB(&ip->i_inode)->sd_inptrs;
+
+        for (; eablk < end; eablk++) {
+                u64 bn;
+
+                if (!*eablk)
+                        break;
+                bn = be64_to_cpu(*eablk);
+
+                error = gfs2_meta_read(ip->i_gl, bn, 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 {
+        int type;
+        const char *name;
+        size_t namel;
+        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;
+
+        if (ea->ea_type == GFS2_EATYPE_UNUSED)
+                return 0;
+
+        if (ea->ea_type == ef->type) {
+                if (ea->ea_name_len == ef->namel &&
+                    !memcmp(GFS2_EA2NAME(ea), ef->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;
+                }
+        }
+
+        return 0;
+}
+
+int gfs2_ea_find(struct gfs2_inode *ip, int type, const char *name,
+                 struct gfs2_ea_location *el)
+{
+        struct ea_find ef;
+        int error;
+
+        ef.type = type;
+        ef.name = name;
+        ef.namel = strlen(name);
+        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 = GFS2_SB(&ip->i_inode);
+        struct gfs2_rgrpd *rgd;
+        struct gfs2_holder rg_gh;
+        struct buffer_head *dibh;
+        __be64 *dataptrs;
+        u64 bn = 0;
+        u64 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_length + RES_DINODE +
+                                 RES_EATTR + RES_STATFS + RES_QUOTA, blks);
+        if (error)
+                goto out_gunlock;
+
+        gfs2_trans_add_bh(ip->i_gl, bh, 1);
+
+        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;
+                gfs2_add_inode_blocks(&ip->i_inode, -1);
+        }
+        if (bstart)
+                gfs2_free_meta(ip, bstart, blen);
+
+        if (prev && !leave) {
+                u32 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_inode.i_ctime = CURRENT_TIME;
+                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+                gfs2_dinode_out(ip, 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);
+        if (!al)
+                return -ENOMEM;
+
+        error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        if (error)
+                goto out_alloc;
+
+        error = gfs2_rindex_hold(GFS2_SB(&ip->i_inode), &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;
+}
+
+struct ea_list {
+        struct gfs2_ea_request *ei_er;
+        unsigned int ei_size;
+};
+
+static inline unsigned int gfs2_ea_strlen(struct gfs2_ea_header *ea)
+{
+        switch (ea->ea_type) {
+        case GFS2_EATYPE_USR:
+                return 5 + ea->ea_name_len + 1;
+        case GFS2_EATYPE_SYS:
+                return 7 + ea->ea_name_len + 1;
+        case GFS2_EATYPE_SECURITY:
+                return 9 + ea->ea_name_len + 1;
+        default:
+                return 0;
+        }
+}
+
+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 = NULL;
+                unsigned int l = 0;
+                char c = 0;
+
+                if (ei->ei_size + ea_size > er->er_data_len)
+                        return -ERANGE;
+
+                switch (ea->ea_type) {
+                case GFS2_EATYPE_USR:
+                        prefix = "user.";
+                        l = 5;
+                        break;
+                case GFS2_EATYPE_SYS:
+                        prefix = "system.";
+                        l = 7;
+                        break;
+                case GFS2_EATYPE_SECURITY:
+                        prefix = "security.";
+                        l = 9;
+                        break;
+                }
+
+                BUG_ON(l == 0);
+
+                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_listxattr - List gfs2 extended attributes
+ * @dentry: The dentry whose inode we are interested in
+ * @buffer: The buffer to write the results
+ * @size: The size of the buffer
+ *
+ * Returns: actual size of data on success, -errno on error
+ */
+
+ssize_t gfs2_listxattr(struct dentry *dentry, char *buffer, size_t size)
+{
+        struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
+        struct gfs2_ea_request er;
+        struct gfs2_holder i_gh;
+        int error;
+
+        memset(&er, 0, sizeof(struct gfs2_ea_request));
+        if (size) {
+                er.er_data = buffer;
+                er.er_data_len = size;
+        }
+
+        error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh);
+        if (error)
+                return error;
+
+        if (ip->i_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: The GFS2 inode
+ * @ea: The extended attribute header structure
+ * @data: The data to be copied
+ *
+ * Returns: errno
+ */
+
+static int ea_get_unstuffed(struct gfs2_inode *ip, struct gfs2_ea_header *ea,
+                            char *data)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+        struct buffer_head **bh;
+        unsigned int amount = GFS2_EA_DATA_LEN(ea);
+        unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize);
+        __be64 *dataptrs = GFS2_EA2DATAPTRS(ea);
+        unsigned int x;
+        int error = 0;
+
+        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS);
+        if (!bh)
+                return -ENOMEM;
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_read(ip->i_gl, be64_to_cpu(*dataptrs), 0,
+                                       bh + x);
+                if (error) {
+                        while (x--)
+                                brelse(bh[x]);
+                        goto out;
+                }
+                dataptrs++;
+        }
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_wait(sdp, bh[x]);
+                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, size_t size)
+{
+        int ret;
+        size_t len = GFS2_EA_DATA_LEN(el->el_ea);
+        if (len > size)
+                return -ERANGE;
+
+        if (GFS2_EA_IS_STUFFED(el->el_ea)) {
+                memcpy(data, GFS2_EA2DATA(el->el_ea), len);
+                return len;
+        }
+        ret = ea_get_unstuffed(ip, el->el_ea, data);
+        if (ret < 0)
+                return ret;
+        return len;
+}
+
+/**
+ * gfs2_xattr_get - Get a GFS2 extended attribute
+ * @inode: The inode
+ * @type: The type of extended attribute
+ * @name: The name of the extended attribute
+ * @buffer: The buffer to write the result into
+ * @size: The size of the buffer
+ *
+ * Returns: actual size of data on success, -errno on error
+ */
+
+int gfs2_xattr_get(struct inode *inode, int type, const char *name,
+                   void *buffer, size_t size)
+{
+        struct gfs2_inode *ip = GFS2_I(inode);
+        struct gfs2_ea_location el;
+        int error;
+
+        if (!ip->i_eattr)
+                return -ENODATA;
+        if (strlen(name) > GFS2_EA_MAX_NAME_LEN)
+                return -EINVAL;
+
+        error = gfs2_ea_find(ip, type, name, &el);
+        if (error)
+                return error;
+        if (!el.el_ea)
+                return -ENODATA;
+        if (size) 
+                error = gfs2_ea_get_copy(ip, &el, buffer, size);
+        else
+                error = GFS2_EA_DATA_LEN(el.el_ea);
+        brelse(el.el_bh);
+
+        return error;
+}
+
+/**
+ * ea_alloc_blk - allocates a new block for extended attributes.
+ * @ip: A pointer to the inode that's getting extended attributes
+ * @bhp: Pointer to pointer to a struct buffer_head
+ *
+ * Returns: errno
+ */
+
+static int ea_alloc_blk(struct gfs2_inode *ip, struct buffer_head **bhp)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+        struct gfs2_ea_header *ea;
+        unsigned int n = 1;
+        u64 block;
+        int error;
+
+        error = gfs2_alloc_block(ip, &block, &n);
+        if (error)
+                return error;
+        gfs2_trans_add_unrevoke(sdp, block, 1);
+        *bhp = gfs2_meta_new(ip->i_gl, block);
+        gfs2_trans_add_bh(ip->i_gl, *bhp, 1);
+        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;
+
+        gfs2_add_inode_blocks(&ip->i_inode, 1);
+
+        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 = GFS2_SB(&ip->i_inode);
+        int error;
+
+        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 {
+                __be64 *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_ROUND_UP(er->er_data_len, sdp->sd_jbsize);
+                for (x = 0; x < ea->ea_num_ptrs; x++) {
+                        struct buffer_head *bh;
+                        u64 block;
+                        int mh_size = sizeof(struct gfs2_meta_header);
+                        unsigned int n = 1;
+
+                        error = gfs2_alloc_block(ip, &block, &n);
+                        if (error)
+                                return error;
+                        gfs2_trans_add_unrevoke(sdp, block, 1);
+                        bh = gfs2_meta_new(ip->i_gl, block);
+                        gfs2_trans_add_bh(ip->i_gl, bh, 1);
+                        gfs2_metatype_set(bh, GFS2_METATYPE_ED, GFS2_FORMAT_ED);
+
+                        gfs2_add_inode_blocks(&ip->i_inode, 1);
+
+                        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(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);
+        if (!al)
+                return -ENOMEM;
+
+        error = gfs2_quota_lock_check(ip);
+        if (error)
+                goto out;
+
+        al->al_requested = blks;
+
+        error = gfs2_inplace_reserve(ip);
+        if (error)
+                goto out_gunlock_q;
+
+        error = gfs2_trans_begin(GFS2_SB(&ip->i_inode),
+                                 blks + al->al_rgd->rd_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) {
+                ip->i_inode.i_ctime = CURRENT_TIME;
+                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+                gfs2_dinode_out(ip, dibh->b_data);
+                brelse(dibh);
+        }
+
+out_end_trans:
+        gfs2_trans_end(GFS2_SB(&ip->i_inode));
+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_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, int type, const char *name,
+                   const void *data, size_t size)
+{
+        struct gfs2_ea_request er;
+        unsigned int jbsize = GFS2_SB(&ip->i_inode)->sd_jbsize;
+        unsigned int blks = 1;
+
+        er.er_type = type;
+        er.er_name = name;
+        er.er_name_len = strlen(name);
+        er.er_data = (void *)data;
+        er.er_data_len = size;
+
+        if (GFS2_EAREQ_SIZE_STUFFED(&er) > jbsize)
+                blks += DIV_ROUND_UP(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)
+{
+        u32 ea_size = GFS2_EA_SIZE(ea);
+        struct gfs2_ea_header *new = (struct gfs2_ea_header *)((char *)ea +
+                                     ea_size);
+        u32 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;
+        u32 len;
+
+        gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1);
+
+        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(GFS2_SB(&ip->i_inode), 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(GFS2_SB(&ip->i_inode), RES_DINODE + 2 * RES_EATTR, 0);
+        if (error)
+                return error;
+
+        gfs2_trans_add_bh(ip->i_gl, bh, 1);
+
+        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;
+        ip->i_inode.i_ctime = CURRENT_TIME;
+        gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+        gfs2_dinode_out(ip, dibh->b_data);
+        brelse(dibh);
+out:
+        gfs2_trans_end(GFS2_SB(&ip->i_inode));
+        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, 1);
+
+        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(GFS2_SB(&ip->i_inode), es->es_er->er_name_len,
+                               es->es_er->er_data_len, &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_ROUND_UP(es->es_er->er_data_len,
+                                        GFS2_SB(&ip->i_inode)->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 = GFS2_SB(&ip->i_inode);
+        struct buffer_head *indbh, *newbh;
+        __be64 *eablk;
+        int error;
+        int mh_size = sizeof(struct gfs2_meta_header);
+
+        if (ip->i_diskflags & GFS2_DIF_EA_INDIRECT) {
+                __be64 *end;
+
+                error = gfs2_meta_read(ip->i_gl, ip->i_eattr, DIO_WAIT,
+                                       &indbh);
+                if (error)
+                        return error;
+
+                if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) {
+                        error = -EIO;
+                        goto out;
+                }
+
+                eablk = (__be64 *)(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, 1);
+        } else {
+                u64 blk;
+                unsigned int n = 1;
+                error = gfs2_alloc_block(ip, &blk, &n);
+                if (error)
+                        return error;
+                gfs2_trans_add_unrevoke(sdp, blk, 1);
+                indbh = gfs2_meta_new(ip->i_gl, blk);
+                gfs2_trans_add_bh(ip->i_gl, indbh, 1);
+                gfs2_metatype_set(indbh, GFS2_METATYPE_IN, GFS2_FORMAT_IN);
+                gfs2_buffer_clear_tail(indbh, mh_size);
+
+                eablk = (__be64 *)(indbh->b_data + mh_size);
+                *eablk = cpu_to_be64(ip->i_eattr);
+                ip->i_eattr = blk;
+                ip->i_diskflags |= GFS2_DIF_EA_INDIRECT;
+                gfs2_add_inode_blocks(&ip->i_inode, 1);
+
+                eablk++;
+        }
+
+        error = ea_alloc_blk(ip, &newbh);
+        if (error)
+                goto out;
+
+        *eablk = cpu_to_be64((u64)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, private);
+
+out:
+        brelse(indbh);
+        return error;
+}
+
+static int ea_set_i(struct gfs2_inode *ip, int type, const char *name,
+                    const void *value, size_t size, struct gfs2_ea_location *el)
+{
+        struct gfs2_ea_request er;
+        struct ea_set es;
+        unsigned int blks = 2;
+        int error;
+
+        er.er_type = type;
+        er.er_name = name;
+        er.er_data = (void *)value;
+        er.er_name_len = strlen(name);
+        er.er_data_len = size;
+
+        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_diskflags & GFS2_DIF_EA_INDIRECT))
+                blks++;
+        if (GFS2_EAREQ_SIZE_STUFFED(&er) > GFS2_SB(&ip->i_inode)->sd_jbsize)
+                blks += DIV_ROUND_UP(er.er_data_len, GFS2_SB(&ip->i_inode)->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(GFS2_SB(&ip->i_inode),
+                                     GFS2_EA2NEXT(el->el_prev) == el->el_ea);
+        }
+
+        return ea_remove_unstuffed(ip, el->el_bh, el->el_ea, el->el_prev,0);
+}
+
+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(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0);
+        if (error)
+                return error;
+
+        gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1);
+
+        if (prev) {
+                u32 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_inode.i_ctime = CURRENT_TIME;
+                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+                gfs2_dinode_out(ip, dibh->b_data);
+                brelse(dibh);
+        }
+
+        gfs2_trans_end(GFS2_SB(&ip->i_inode));
+
+        return error;
+}
+
+/**
+ * gfs2_xattr_remove - Remove a GFS2 extended attribute
+ * @inode: The inode
+ * @type: The type of the extended attribute
+ * @name: The name of the extended attribute
+ *
+ * This is not called directly by the VFS since we use the (common)
+ * scheme of making a "set with NULL data" mean a remove request. Note
+ * that this is different from a set with zero length data.
+ *
+ * Returns: 0, or errno on failure
+ */
+
+static int gfs2_xattr_remove(struct inode *inode, int type, const char *name)
+{
+        struct gfs2_inode *ip = GFS2_I(inode);
+        struct gfs2_ea_location el;
+        int error;
+
+        if (!ip->i_eattr)
+                return -ENODATA;
+
+        error = gfs2_ea_find(ip, type, name, &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_xattr_set - Set (or remove) a GFS2 extended attribute
+ * @inode: The inode
+ * @type: The type of the extended attribute
+ * @name: The name of the extended attribute
+ * @value: The value of the extended attribute (NULL for remove)
+ * @size: The size of the @value argument
+ * @flags: Create or Replace
+ *
+ * See gfs2_xattr_remove() for details of the removal of xattrs.
+ *
+ * Returns: 0 or errno on failure
+ */
+
+int gfs2_xattr_set(struct inode *inode, int type, const char *name,
+                   const void *value, size_t size, int flags)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(inode);
+        struct gfs2_inode *ip = GFS2_I(inode);
+        struct gfs2_ea_location el;
+        unsigned int namel = strlen(name);
+        int error;
+
+        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+                return -EPERM;
+        if (namel > GFS2_EA_MAX_NAME_LEN)
+                return -ERANGE;
+
+        if (value == NULL)
+                return gfs2_xattr_remove(inode, type, name);
+
+        if (ea_check_size(sdp, namel, size))
+                return -ERANGE;
+
+        if (!ip->i_eattr) {
+                if (flags & XATTR_REPLACE)
+                        return -ENODATA;
+                return ea_init(ip, type, name, value, size);
+        }
+
+        error = gfs2_ea_find(ip, type, name, &el);
+        if (error)
+                return error;
+
+        if (el.el_ea) {
+                if (ip->i_diskflags & GFS2_DIF_APPENDONLY) {
+                        brelse(el.el_bh);
+                        return -EPERM;
+                }
+
+                error = -EEXIST;
+                if (!(flags & XATTR_CREATE)) {
+                        int unstuffed = !GFS2_EA_IS_STUFFED(el.el_ea);
+                        error = ea_set_i(ip, type, name, value, size, &el);
+                        if (!error && unstuffed)
+                                ea_set_remove_unstuffed(ip, &el);
+                }
+
+                brelse(el.el_bh);
+                return error;
+        }
+
+        error = -ENODATA;
+        if (!(flags & XATTR_REPLACE))
+                error = ea_set_i(ip, type, name, value, size, NULL);
+
+        return error;
+}
+
+static int ea_acl_chmod_unstuffed(struct gfs2_inode *ip,
+                                  struct gfs2_ea_header *ea, char *data)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+        struct buffer_head **bh;
+        unsigned int amount = GFS2_EA_DATA_LEN(ea);
+        unsigned int nptrs = DIV_ROUND_UP(amount, sdp->sd_jbsize);
+        __be64 *dataptrs = GFS2_EA2DATAPTRS(ea);
+        unsigned int x;
+        int error;
+
+        bh = kcalloc(nptrs, sizeof(struct buffer_head *), GFP_NOFS);
+        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), 0,
+                                       bh + x);
+                if (error) {
+                        while (x--)
+                                brelse(bh[x]);
+                        goto fail;
+                }
+                dataptrs++;
+        }
+
+        for (x = 0; x < nptrs; x++) {
+                error = gfs2_meta_wait(sdp, bh[x]);
+                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], 1);
+
+                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(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0);
+                if (error)
+                        return error;
+
+                gfs2_trans_add_bh(ip->i_gl, el->el_bh, 1);
+                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_inode, attr);
+                gfs2_assert_warn(GFS2_SB(&ip->i_inode), !error);
+                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+                gfs2_dinode_out(ip, dibh->b_data);
+                brelse(dibh);
+        }
+
+        gfs2_trans_end(GFS2_SB(&ip->i_inode));
+
+        return error;
+}
+
+static int ea_dealloc_indirect(struct gfs2_inode *ip)
+{
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
+        struct gfs2_rgrp_list rlist;
+        struct buffer_head *indbh, *dibh;
+        __be64 *eablk, *end;
+        unsigned int rg_blocks = 0;
+        u64 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_eattr, DIO_WAIT, &indbh);
+        if (error)
+                return error;
+
+        if (gfs2_metatype_check(sdp, indbh, GFS2_METATYPE_IN)) {
+                error = -EIO;
+                goto out;
+        }
+
+        eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header));
+        end = eablk + sdp->sd_inptrs;
+
+        for (; eablk < end; eablk++) {
+                u64 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);
+
+        for (x = 0; x < rlist.rl_rgrps; x++) {
+                struct gfs2_rgrpd *rgd;
+                rgd = rlist.rl_ghs[x].gh_gl->gl_object;
+                rg_blocks += rgd->rd_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, 1);
+
+        eablk = (__be64 *)(indbh->b_data + sizeof(struct gfs2_meta_header));
+        bstart = 0;
+        blen = 0;
+
+        for (; eablk < end; eablk++) {
+                u64 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;
+                gfs2_add_inode_blocks(&ip->i_inode, -1);
+        }
+        if (bstart)
+                gfs2_free_meta(ip, bstart, blen);
+
+        ip->i_diskflags &= ~GFS2_DIF_EA_INDIRECT;
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+                gfs2_dinode_out(ip, 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 = GFS2_SB(&ip->i_inode);
+        struct gfs2_alloc *al = ip->i_alloc;
+        struct gfs2_rgrpd *rgd;
+        struct buffer_head *dibh;
+        int error;
+
+        rgd = gfs2_blk2rgrpd(sdp, ip->i_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_eattr, 1);
+
+        ip->i_eattr = 0;
+        gfs2_add_inode_blocks(&ip->i_inode, -1);
+
+        error = gfs2_meta_inode_buffer(ip, &dibh);
+        if (!error) {
+                gfs2_trans_add_bh(ip->i_gl, dibh, 1);
+                gfs2_dinode_out(ip, 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);
+        if (!al)
+                return -ENOMEM;
+
+        error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
+        if (error)
+                goto out_alloc;
+
+        error = gfs2_rindex_hold(GFS2_SB(&ip->i_inode), &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_diskflags & 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;
+}
+
+static int gfs2_xattr_user_get(struct inode *inode, const char *name,
+                               void *buffer, size_t size)
+{
+        return gfs2_xattr_get(inode, GFS2_EATYPE_USR, name, buffer, size);
+}
+
+static int gfs2_xattr_user_set(struct inode *inode, const char *name,
+                               const void *value, size_t size, int flags)
+{
+        return gfs2_xattr_set(inode, GFS2_EATYPE_USR, name, value, size, flags);
+}
+
+static int gfs2_xattr_system_get(struct inode *inode, const char *name,
+                                 void *buffer, size_t size)
+{
+        return gfs2_xattr_get(inode, GFS2_EATYPE_SYS, name, buffer, size);
+}
+
+static int gfs2_xattr_system_set(struct inode *inode, const char *name,
+                                 const void *value, size_t size, int flags)
+{
+        return gfs2_xattr_set(inode, GFS2_EATYPE_SYS, name, value, size, flags);
+}
+
+static int gfs2_xattr_security_get(struct inode *inode, const char *name,
+                                   void *buffer, size_t size)
+{
+        return gfs2_xattr_get(inode, GFS2_EATYPE_SECURITY, name, buffer, size);
+}
+
+static int gfs2_xattr_security_set(struct inode *inode, const char *name,
+                                   const void *value, size_t size, int flags)
+{
+        return gfs2_xattr_set(inode, GFS2_EATYPE_SECURITY, name, value, size, flags);
+}
+
+static struct xattr_handler gfs2_xattr_user_handler = {
+        .prefix = XATTR_USER_PREFIX,
+        .get    = gfs2_xattr_user_get,
+        .set    = gfs2_xattr_user_set,
+};
+
+static struct xattr_handler gfs2_xattr_security_handler = {
+        .prefix = XATTR_SECURITY_PREFIX,
+        .get    = gfs2_xattr_security_get,
+        .set    = gfs2_xattr_security_set,
+};
+
+static struct xattr_handler gfs2_xattr_system_handler = {
+        .prefix = XATTR_SYSTEM_PREFIX,
+        .get    = gfs2_xattr_system_get,
+        .set    = gfs2_xattr_system_set,
+};
+
+struct xattr_handler *gfs2_xattr_handlers[] = {
+        &gfs2_xattr_user_handler,
+        &gfs2_xattr_security_handler,
+        &gfs2_xattr_system_handler,
+        NULL,
+};
+