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GFS2: decouple quota allocations from block allocations 

This patch separates the code pertaining to allocations into two
parts: quota-related information and block reservations.
This patch also moves all the block reservation structure allocations to
function gfs2_inplace_reserve to simplify the code, and moves
the frees to function gfs2_inplace_release.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Bob Peterson 2011-11-21 13:36:17 -05:00 committed by Steven Whitehouse
parent b3e47ca0c2
commit 564e12b115
13 changed files with 188 additions and 181 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
fs/gfs2/aops.c
View File

@ -615,7 +615,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
int alloc_required;
int error = 0;
struct gfs2_alloc *al = NULL;
struct gfs2_qadata *qa = NULL;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
struct page *page;
@ -639,8 +639,8 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
gfs2_write_calc_reserv(ip, len, &data_blocks, &ind_blocks);
if (alloc_required) {
al = gfs2_alloc_get(ip);
if (!al) {
qa = gfs2_qadata_get(ip);
if (!qa) {
error = -ENOMEM;
goto out_unlock;
}
@ -649,8 +649,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
if (error)
goto out_alloc_put;
al->al_requested = data_blocks + ind_blocks;
error = gfs2_inplace_reserve(ip);
error = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (error)
goto out_qunlock;
}
@ -711,7 +710,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
out_qunlock:
gfs2_quota_unlock(ip);
out_alloc_put:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
}
out_unlock:
if (&ip->i_inode == sdp->sd_rindex) {
@ -848,7 +847,7 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
struct buffer_head *dibh;
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_qadata *qa = ip->i_qadata;
unsigned int from = pos & (PAGE_CACHE_SIZE - 1);
unsigned int to = from + len;
int ret;
@ -880,10 +879,11 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
brelse(dibh);
failed:
gfs2_trans_end(sdp);
if (al) {
if (ip->i_res)
gfs2_inplace_release(ip);
if (qa) {
gfs2_quota_unlock(ip);
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
}
if (inode == sdp->sd_rindex) {
gfs2_glock_dq(&m_ip->i_gh);

19
fs/gfs2/bmap.c
View File

@ -1041,7 +1041,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;
find_metapath(sdp, lblock, &mp, ip->i_height);
if (!gfs2_alloc_get(ip))
if (!gfs2_qadata_get(ip))
return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@ -1061,7 +1061,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
gfs2_quota_unhold(ip);
out:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
return error;
}
@ -1163,21 +1163,20 @@ static int do_grow(struct inode *inode, u64 size)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct buffer_head *dibh;
struct gfs2_alloc *al = NULL;
struct gfs2_qadata *qa = NULL;
int error;
if (gfs2_is_stuffed(ip) &&
(size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) {
al = gfs2_alloc_get(ip);
if (al == NULL)
qa = gfs2_qadata_get(ip);
if (qa == NULL)
return -ENOMEM;
error = gfs2_quota_lock_check(ip);
if (error)
goto do_grow_alloc_put;
al->al_requested = 1;
error = gfs2_inplace_reserve(ip);
error = gfs2_inplace_reserve(ip, 1);
if (error)
goto do_grow_qunlock;
}
@ -1186,7 +1185,7 @@ static int do_grow(struct inode *inode, u64 size)
if (error)
goto do_grow_release;
if (al) {
if (qa) {
error = gfs2_unstuff_dinode(ip, NULL);
if (error)
goto do_end_trans;
@ -1205,12 +1204,12 @@ static int do_grow(struct inode *inode, u64 size)
do_end_trans:
gfs2_trans_end(sdp);
do_grow_release:
if (al) {
if (qa) {
gfs2_inplace_release(ip);
do_grow_qunlock:
gfs2_quota_unlock(ip);
do_grow_alloc_put:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
}
return error;
}

4
fs/gfs2/dir.c
View File

@ -1850,7 +1850,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
if (!ht)
return -ENOMEM;
if (!gfs2_alloc_get(dip)) {
if (!gfs2_qadata_get(dip)) {
error = -ENOMEM;
goto out;
}
@ -1939,7 +1939,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
gfs2_rlist_free(&rlist);
gfs2_quota_unhold(dip);
out_put:
gfs2_alloc_put(dip);
gfs2_qadata_put(dip);
out:
kfree(ht);
return error;

25
fs/gfs2/file.c
View File

@ -365,7 +365,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
u64 pos = page->index << PAGE_CACHE_SHIFT;
unsigned int data_blocks, ind_blocks, rblocks;
struct gfs2_holder gh;
struct gfs2_alloc *al;
struct gfs2_qadata *qa;
loff_t size;
int ret;
@ -393,16 +393,15 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
}
ret = -ENOMEM;
al = gfs2_alloc_get(ip);
if (al == NULL)
qa = gfs2_qadata_get(ip);
if (qa == NULL)
goto out_unlock;
ret = gfs2_quota_lock_check(ip);
if (ret)
goto out_alloc_put;
gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
al->al_requested = data_blocks + ind_blocks;
ret = gfs2_inplace_reserve(ip);
ret = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (ret)
goto out_quota_unlock;
@ -448,7 +447,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
out_quota_unlock:
gfs2_quota_unlock(ip);
out_alloc_put:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
out_unlock:
gfs2_glock_dq(&gh);
out:
@ -750,7 +749,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
struct gfs2_inode *ip = GFS2_I(inode);
unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
loff_t bytes, max_bytes;
struct gfs2_alloc *al;
struct gfs2_qadata *qa;
int error;
const loff_t pos = offset;
const loff_t count = len;
@ -784,8 +783,8 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
while (len > 0) {
if (len < bytes)
bytes = len;
al = gfs2_alloc_get(ip);
if (!al) {
qa = gfs2_qadata_get(ip);
if (!qa) {
error = -ENOMEM;
goto out_unlock;
}
@ -797,8 +796,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
retry:
gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);
al->al_requested = data_blocks + ind_blocks;
error = gfs2_inplace_reserve(ip);
error = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (error) {
if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) {
bytes >>= 1;
@ -812,7 +810,6 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
max_bytes = bytes;
calc_max_reserv(ip, (len > max_chunk_size)? max_chunk_size: len,
&max_bytes, &data_blocks, &ind_blocks);
al->al_requested = data_blocks + ind_blocks;
rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA +
RES_RG_HDR + gfs2_rg_blocks(ip);
@ -834,7 +831,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
offset += max_bytes;
gfs2_inplace_release(ip);
gfs2_quota_unlock(ip);
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
}
if (error == 0)
@ -846,7 +843,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
out_qunlock:
gfs2_quota_unlock(ip);
out_alloc_put:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
out_unlock:
gfs2_glock_dq(&ip->i_gh);
out_uninit:

19
fs/gfs2/incore.h
View File

@ -244,16 +244,16 @@ struct gfs2_glock {
#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
struct gfs2_alloc {
struct gfs2_qadata { /* quota allocation data */
/* Quota stuff */
struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
unsigned int al_qd_num;
struct gfs2_quota_data *qa_qd[2*MAXQUOTAS];
struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS];
unsigned int qa_qd_num;
};
u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
/* Filled in by gfs2_inplace_reserve() */
struct gfs2_holder al_rgd_gh;
struct gfs2_blkreserv {
u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */
struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */
};
enum {
@ -274,7 +274,8 @@ struct gfs2_inode {
struct gfs2_glock *i_gl; /* Move into i_gh? */
struct gfs2_holder i_iopen_gh;
struct gfs2_holder i_gh; /* for prepare/commit_write only */
struct gfs2_alloc *i_alloc;
struct gfs2_qadata *i_qadata; /* quota allocation data */
struct gfs2_blkreserv *i_res; /* resource group block reservation */
struct gfs2_rgrpd *i_rgd;
u64 i_goal; /* goal block for allocations */
struct rw_semaphore i_rw_mutex;

58
fs/gfs2/inode.c
View File

@ -391,11 +391,11 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
int error;
int dblocks = 0;
if (gfs2_alloc_get(dip) == NULL)
return -ENOMEM;
error = gfs2_rindex_update(sdp);
if (error)
fs_warn(sdp, "rindex update returns %d\n", error);
dip->i_alloc->al_requested = RES_DINODE;
error = gfs2_inplace_reserve(dip);
error = gfs2_inplace_reserve(dip, RES_DINODE);
if (error)
goto out;
@ -410,7 +410,6 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
out_ipreserv:
gfs2_inplace_release(dip);
out:
gfs2_alloc_put(dip);
return error;
}
@ -526,7 +525,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
int error;
munge_mode_uid_gid(dip, &mode, &uid, &gid);
if (!gfs2_alloc_get(dip))
if (!gfs2_qadata_get(dip))
return -ENOMEM;
error = gfs2_quota_lock(dip, uid, gid);
@ -548,7 +547,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
out_quota:
gfs2_quota_unlock(dip);
out:
gfs2_alloc_put(dip);
gfs2_qadata_put(dip);
return error;
}
@ -556,13 +555,13 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
struct gfs2_alloc *al;
struct gfs2_qadata *qa;
int alloc_required;
struct buffer_head *dibh;
int error;
al = gfs2_alloc_get(dip);
if (!al)
qa = gfs2_qadata_get(dip);
if (!qa)
return -ENOMEM;
error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@ -577,9 +576,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
if (error)
goto fail_quota_locks;
al->al_requested = sdp->sd_max_dirres;
error = gfs2_inplace_reserve(dip);
error = gfs2_inplace_reserve(dip, sdp->sd_max_dirres);
if (error)
goto fail_quota_locks;
@ -620,7 +617,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
gfs2_quota_unlock(dip);
fail:
gfs2_alloc_put(dip);
gfs2_qadata_put(dip);
return error;
}
@ -729,9 +726,12 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
brelse(bh);
gfs2_trans_end(sdp);
gfs2_inplace_release(dip);
/* Check if we reserved space in the rgrp. Function link_dinode may
not, depending on whether alloc is required. */
if (dip->i_res)
gfs2_inplace_release(dip);
gfs2_quota_unlock(dip);
gfs2_alloc_put(dip);
gfs2_qadata_put(dip);
mark_inode_dirty(inode);
gfs2_glock_dq_uninit_m(2, ghs);
d_instantiate(dentry, inode);
@ -876,8 +876,9 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
error = 0;
if (alloc_required) {
struct gfs2_alloc *al = gfs2_alloc_get(dip);
if (!al) {
struct gfs2_qadata *qa = gfs2_qadata_get(dip);
if (!qa) {
error = -ENOMEM;
goto out_gunlock;
}
@ -886,9 +887,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
if (error)
goto out_alloc;
al->al_requested = sdp->sd_max_dirres;
error = gfs2_inplace_reserve(dip);
error = gfs2_inplace_reserve(dip, sdp->sd_max_dirres);
if (error)
goto out_gunlock_q;
@ -931,7 +930,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
gfs2_quota_unlock(dip);
out_alloc:
if (alloc_required)
gfs2_alloc_put(dip);
gfs2_qadata_put(dip);
out_gunlock:
gfs2_glock_dq(ghs + 1);
out_child:
@ -1354,8 +1353,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
error = 0;
if (alloc_required) {
struct gfs2_alloc *al = gfs2_alloc_get(ndip);
if (!al) {
struct gfs2_qadata *qa = gfs2_qadata_get(ndip);
if (!qa) {
error = -ENOMEM;
goto out_gunlock;
}
@ -1364,9 +1364,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_alloc;
al->al_requested = sdp->sd_max_dirres;
error = gfs2_inplace_reserve(ndip);
error = gfs2_inplace_reserve(ndip, sdp->sd_max_dirres);
if (error)
goto out_gunlock_q;
@ -1427,7 +1425,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
gfs2_quota_unlock(ndip);
out_alloc:
if (alloc_required)
gfs2_alloc_put(ndip);
gfs2_qadata_put(ndip);
out_gunlock:
while (x--) {
gfs2_glock_dq(ghs + x);
@ -1588,7 +1586,7 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
ogid = ngid = NO_QUOTA_CHANGE;
if (!gfs2_alloc_get(ip))
if (!gfs2_qadata_get(ip))
return -ENOMEM;
error = gfs2_quota_lock(ip, nuid, ngid);
@ -1620,7 +1618,7 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
out_gunlock_q:
gfs2_quota_unlock(ip);
out_alloc:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
return error;
}

3
fs/gfs2/main.c
View File

@ -40,7 +40,8 @@ static void gfs2_init_inode_once(void *foo)
inode_init_once(&ip->i_inode);
init_rwsem(&ip->i_rw_mutex);
INIT_LIST_HEAD(&ip->i_trunc_list);
ip->i_alloc = NULL;
ip->i_qadata = NULL;
ip->i_res = NULL;
ip->i_hash_cache = NULL;
}

85
fs/gfs2/quota.c
View File

@ -494,11 +494,11 @@ static void qdsb_put(struct gfs2_quota_data *qd)
int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_quota_data **qd = al->al_qd;
struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data **qd = qa->qa_qd;
int error;
if (gfs2_assert_warn(sdp, !al->al_qd_num) ||
if (gfs2_assert_warn(sdp, !qa->qa_qd_num) ||
gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags)))
return -EIO;
@ -508,20 +508,20 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, qd);
if (error)
goto out;
al->al_qd_num++;
qa->qa_qd_num++;
qd++;
error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, qd);
if (error)
goto out;
al->al_qd_num++;
qa->qa_qd_num++;
qd++;
if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) {
error = qdsb_get(sdp, QUOTA_USER, uid, qd);
if (error)
goto out;
al->al_qd_num++;
qa->qa_qd_num++;
qd++;
}
@ -529,7 +529,7 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
error = qdsb_get(sdp, QUOTA_GROUP, gid, qd);
if (error)
goto out;
al->al_qd_num++;
qa->qa_qd_num++;
qd++;
}
@ -542,16 +542,16 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
void gfs2_quota_unhold(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_qadata *qa = ip->i_qadata;
unsigned int x;
gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags));
for (x = 0; x < al->al_qd_num; x++) {
qdsb_put(al->al_qd[x]);
al->al_qd[x] = NULL;
for (x = 0; x < qa->qa_qd_num; x++) {
qdsb_put(qa->qa_qd[x]);
qa->qa_qd[x] = NULL;
}
al->al_qd_num = 0;
qa->qa_qd_num = 0;
}
static int sort_qd(const void *a, const void *b)
@ -762,7 +762,6 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
struct gfs2_quota_data *qd;
loff_t offset;
unsigned int nalloc = 0, blocks;
struct gfs2_alloc *al = NULL;
int error;
gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
@ -792,26 +791,19 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
nalloc++;
}
al = gfs2_alloc_get(ip);
if (!al) {
error = -ENOMEM;
goto out_gunlock;
}
/*
* 1 blk for unstuffing inode if stuffed. We add this extra
* block to the reservation unconditionally. If the inode
* doesn't need unstuffing, the block will be released to the
* rgrp since it won't be allocated during the transaction
*/
al->al_requested = 1;
/* +3 in the end for unstuffing block, inode size update block
* and another block in case quota straddles page boundary and
* two blocks need to be updated instead of 1 */
blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3;
if (nalloc)
al->al_requested += nalloc * (data_blocks + ind_blocks);
error = gfs2_inplace_reserve(ip);
error = gfs2_inplace_reserve(ip, 1 +
(nalloc * (data_blocks + ind_blocks)));
if (error)
goto out_alloc;
@ -840,8 +832,6 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
out_ipres:
gfs2_inplace_release(ip);
out_alloc:
gfs2_alloc_put(ip);
out_gunlock:
gfs2_glock_dq_uninit(&i_gh);
out:
while (qx--)
@ -925,7 +915,7 @@ static int do_glock(struct gfs2_quota_data *qd, int force_refresh,
int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qd;
unsigned int x;
int error = 0;
@ -938,15 +928,15 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
return 0;
sort(al->al_qd, al->al_qd_num, sizeof(struct gfs2_quota_data *),
sort(qa->qa_qd, qa->qa_qd_num, sizeof(struct gfs2_quota_data *),
sort_qd, NULL);
for (x = 0; x < al->al_qd_num; x++) {
for (x = 0; x < qa->qa_qd_num; x++) {
int force = NO_FORCE;
qd = al->al_qd[x];
qd = qa->qa_qd[x];
if (test_and_clear_bit(QDF_REFRESH, &qd->qd_flags))
force = FORCE;
error = do_glock(qd, force, &al->al_qd_ghs[x]);
error = do_glock(qd, force, &qa->qa_qd_ghs[x]);
if (error)
break;
}
@ -955,7 +945,7 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
set_bit(GIF_QD_LOCKED, &ip->i_flags);
else {
while (x--)
gfs2_glock_dq_uninit(&al->al_qd_ghs[x]);
gfs2_glock_dq_uninit(&qa->qa_qd_ghs[x]);
gfs2_quota_unhold(ip);
}
@ -1000,7 +990,7 @@ static int need_sync(struct gfs2_quota_data *qd)
void gfs2_quota_unlock(struct gfs2_inode *ip)
{
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qda[4];
unsigned int count = 0;
unsigned int x;
@ -1008,14 +998,14 @@ void gfs2_quota_unlock(struct gfs2_inode *ip)
if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags))
goto out;
for (x = 0; x < al->al_qd_num; x++) {
for (x = 0; x < qa->qa_qd_num; x++) {
struct gfs2_quota_data *qd;
int sync;
qd = al->al_qd[x];
qd = qa->qa_qd[x];
sync = need_sync(qd);
gfs2_glock_dq_uninit(&al->al_qd_ghs[x]);
gfs2_glock_dq_uninit(&qa->qa_qd_ghs[x]);
if (sync && qd_trylock(qd))
qda[count++] = qd;
@ -1048,7 +1038,7 @@ static int print_message(struct gfs2_quota_data *qd, char *type)
int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qd;
s64 value;
unsigned int x;
@ -1060,8 +1050,8 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
return 0;
for (x = 0; x < al->al_qd_num; x++) {
qd = al->al_qd[x];
for (x = 0; x < qa->qa_qd_num; x++) {
qd = qa->qa_qd[x];
if (!((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))))
@ -1099,7 +1089,7 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid)
{
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qd;
unsigned int x;
@ -1108,8 +1098,8 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
if (ip->i_diskflags & GFS2_DIF_SYSTEM)
return;
for (x = 0; x < al->al_qd_num; x++) {
qd = al->al_qd[x];
for (x = 0; x < qa->qa_qd_num; x++) {
qd = qa->qa_qd[x];
if ((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))) {
@ -1529,7 +1519,6 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
unsigned int data_blocks, ind_blocks;
unsigned int blocks = 0;
int alloc_required;
struct gfs2_alloc *al;
loff_t offset;
int error;
@ -1594,15 +1583,12 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
if (gfs2_is_stuffed(ip))
alloc_required = 1;
if (alloc_required) {
al = gfs2_alloc_get(ip);
if (al == NULL)
goto out_i;
gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
&data_blocks, &ind_blocks);
blocks = al->al_requested = 1 + data_blocks + ind_blocks;
error = gfs2_inplace_reserve(ip);
blocks = 1 + data_blocks + ind_blocks;
error = gfs2_inplace_reserve(ip, blocks);
if (error)
goto out_alloc;
goto out_i;
blocks += gfs2_rg_blocks(ip);
}
@ -1617,11 +1603,8 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
gfs2_trans_end(sdp);
out_release:
if (alloc_required) {
if (alloc_required)
gfs2_inplace_release(ip);
out_alloc:
gfs2_alloc_put(ip);
}
out_i:
gfs2_glock_dq_uninit(&i_gh);
out_q:

71
fs/gfs2/rgrp.c
View File

@ -860,22 +860,36 @@ void gfs2_rgrp_send_discards(struct gfs2_sbd *sdp, u64 offset,
}
/**
* gfs2_alloc_get - get the struct gfs2_alloc structure for an inode
* gfs2_qadata_get - get the struct gfs2_qadata structure for an inode
* @ip: the incore GFS2 inode structure
*
* Returns: the struct gfs2_alloc
* Returns: the struct gfs2_qadata
*/
struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
int error;
BUG_ON(ip->i_alloc != NULL);
ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_NOFS);
BUG_ON(ip->i_qadata != NULL);
ip->i_qadata = kzalloc(sizeof(struct gfs2_qadata), GFP_NOFS);
error = gfs2_rindex_update(sdp);
if (error)
fs_warn(sdp, "rindex update returns %d\n", error);
return ip->i_alloc;
return ip->i_qadata;
}
/**
* gfs2_blkrsv_get - get the struct gfs2_blkreserv structure for an inode
* @ip: the incore GFS2 inode structure
*
* Returns: the struct gfs2_qadata
*/
static struct gfs2_blkreserv *gfs2_blkrsv_get(struct gfs2_inode *ip)
{
BUG_ON(ip->i_res != NULL);
ip->i_res = kzalloc(sizeof(struct gfs2_blkreserv), GFP_NOFS);
return ip->i_res;
}
/**
@ -890,11 +904,11 @@ struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
static int try_rgrp_fit(const struct gfs2_rgrpd *rgd, const struct gfs2_inode *ip)
{
const struct gfs2_alloc *al = ip->i_alloc;
const struct gfs2_blkreserv *rs = ip->i_res;
if (rgd->rd_flags & (GFS2_RGF_NOALLOC | GFS2_RDF_ERROR))
return 0;
if (rgd->rd_free_clone >= al->al_requested)
if (rgd->rd_free_clone >= rs->rs_requested)
return 1;
return 0;
}
@ -982,7 +996,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *rgd, *begin = NULL;
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_blkreserv *rs = ip->i_res;
int error, rg_locked, flags = LM_FLAG_TRY;
int loops = 0;
@ -1002,7 +1016,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
error = 0;
} else {
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
flags, &al->al_rgd_gh);
flags, &rs->rs_rgd_gh);
}
switch (error) {
case 0:
@ -1013,7 +1027,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
if (rgd->rd_flags & GFS2_RDF_CHECK)
try_rgrp_unlink(rgd, last_unlinked, ip->i_no_addr);
if (!rg_locked)
gfs2_glock_dq_uninit(&al->al_rgd_gh);
gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
/* fall through */
case GLR_TRYFAILED:
rgd = gfs2_rgrpd_get_next(rgd);
@ -1030,6 +1044,13 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
return -ENOSPC;
}
static void gfs2_blkrsv_put(struct gfs2_inode *ip)
{
BUG_ON(ip->i_res == NULL);
kfree(ip->i_res);
ip->i_res = NULL;
}
/**
* gfs2_inplace_reserve - Reserve space in the filesystem
* @ip: the inode to reserve space for
@ -1037,16 +1058,23 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
* Returns: errno
*/
int gfs2_inplace_reserve(struct gfs2_inode *ip)
int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_blkreserv *rs;
int error = 0;
u64 last_unlinked = NO_BLOCK;
int tries = 0;
if (gfs2_assert_warn(sdp, al->al_requested))
return -EINVAL;
rs = gfs2_blkrsv_get(ip);
if (!rs)
return -ENOMEM;
rs->rs_requested = requested;
if (gfs2_assert_warn(sdp, requested)) {
error = -EINVAL;
goto out;
}
do {
error = get_local_rgrp(ip, &last_unlinked);
@ -1063,6 +1091,9 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip)
gfs2_log_flush(sdp, NULL);
} while (tries++ < 3);
out:
if (error)
gfs2_blkrsv_put(ip);
return error;
}
@ -1075,10 +1106,11 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip)
void gfs2_inplace_release(struct gfs2_inode *ip)
{
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_blkreserv *rs = ip->i_res;
if (al->al_rgd_gh.gh_gl)
gfs2_glock_dq_uninit(&al->al_rgd_gh);
gfs2_blkrsv_put(ip);
if (rs->rs_rgd_gh.gh_gl)
gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
}
/**
@ -1338,7 +1370,6 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *ndata,
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct buffer_head *dibh;
struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_rgrpd *rgd;
u32 goal, extlen, blk; /* block, within the rgrp scope */
u64 block; /* block, within the file system scope */
@ -1348,7 +1379,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *ndata,
/* Only happens if there is a bug in gfs2, return something distinctive
* to ensure that it is noticed.
*/
if (al == NULL)
if (ip->i_res == NULL)
return -ECANCELED;
rgd = ip->i_rgd;

12
fs/gfs2/rgrp.h
View File

@ -28,15 +28,15 @@ extern void gfs2_free_clones(struct gfs2_rgrpd *rgd);
extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh);
extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh);
extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
static inline void gfs2_alloc_put(struct gfs2_inode *ip)
extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip);
static inline void gfs2_qadata_put(struct gfs2_inode *ip)
{
BUG_ON(ip->i_alloc == NULL);
kfree(ip->i_alloc);
ip->i_alloc = NULL;
BUG_ON(ip->i_qadata == NULL);
kfree(ip->i_qadata);
ip->i_qadata = NULL;
}
extern int gfs2_inplace_reserve(struct gfs2_inode *ip);
extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested);
extern void gfs2_inplace_release(struct gfs2_inode *ip);
extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n,

14
fs/gfs2/super.c
View File

@ -1399,8 +1399,9 @@ static void gfs2_final_release_pages(struct gfs2_inode *ip)
static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_alloc *al;
struct gfs2_qadata *qa;
struct gfs2_rgrpd *rgd;
struct gfs2_holder gh;
int error;
if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
@ -1408,8 +1409,8 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
return -EIO;
}
al = gfs2_alloc_get(ip);
if (!al)
qa = gfs2_qadata_get(ip);
if (!qa)
return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@ -1423,8 +1424,7 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
goto out_qs;
}
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
&al->al_rgd_gh);
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (error)
goto out_qs;
@ -1440,11 +1440,11 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
gfs2_trans_end(sdp);
out_rg_gunlock:
gfs2_glock_dq_uninit(&al->al_rgd_gh);
gfs2_glock_dq_uninit(&gh);
out_qs:
gfs2_quota_unhold(ip);
out:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
return error;
}

6
fs/gfs2/trans.h
View File

@ -30,9 +30,9 @@ struct gfs2_glock;
* block, or all of the blocks in the rg, whichever is smaller */
static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip)
{
const struct gfs2_alloc *al = ip->i_alloc;
if (al->al_requested < ip->i_rgd->rd_length)
return al->al_requested + 1;
const struct gfs2_blkreserv *rs = ip->i_res;
if (rs->rs_requested < ip->i_rgd->rd_length)
return rs->rs_requested + 1;
return ip->i_rgd->rd_length;
}

35
fs/gfs2/xattr.c
View File

@ -321,11 +321,11 @@ 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;
struct gfs2_qadata *qa;
int error;
al = gfs2_alloc_get(ip);
if (!al)
qa = gfs2_qadata_get(ip);
if (!qa)
return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@ -336,7 +336,7 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
gfs2_quota_unhold(ip);
out_alloc:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
return error;
}
@ -709,21 +709,19 @@ 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 gfs2_qadata *qa;
struct buffer_head *dibh;
int error;
al = gfs2_alloc_get(ip);
if (!al)
qa = gfs2_qadata_get(ip);
if (!qa)
return -ENOMEM;
error = gfs2_quota_lock_check(ip);
if (error)
goto out;
al->al_requested = blks;
error = gfs2_inplace_reserve(ip);
error = gfs2_inplace_reserve(ip, blks);
if (error)
goto out_gunlock_q;
@ -752,7 +750,7 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
out_gunlock_q:
gfs2_quota_unlock(ip);
out:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
return error;
}
@ -1436,9 +1434,9 @@ static int ea_dealloc_indirect(struct gfs2_inode *ip)
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;
struct gfs2_holder gh;
int error;
rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr);
@ -1447,8 +1445,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
return -EIO;
}
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
&al->al_rgd_gh);
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (error)
return error;
@ -1472,7 +1469,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
gfs2_trans_end(sdp);
out_gunlock:
gfs2_glock_dq_uninit(&al->al_rgd_gh);
gfs2_glock_dq_uninit(&gh);
return error;
}
@ -1485,11 +1482,11 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
int gfs2_ea_dealloc(struct gfs2_inode *ip)
{
struct gfs2_alloc *al;
struct gfs2_qadata *qa;
int error;
al = gfs2_alloc_get(ip);
if (!al)
qa = gfs2_qadata_get(ip);
if (!qa)
return -ENOMEM;
error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@ -1511,7 +1508,7 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
out_quota:
gfs2_quota_unhold(ip);
out_alloc:
gfs2_alloc_put(ip);
gfs2_qadata_put(ip);
return error;
}