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path: root/fs/aufs/dinfo.c
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Diffstat (limited to 'fs/aufs/dinfo.c')
-rw-r--r--fs/aufs/dinfo.c124
1 files changed, 61 insertions, 63 deletions
diff --git a/fs/aufs/dinfo.c b/fs/aufs/dinfo.c
index ad6d045c4..b2eb8c2de 100644
--- a/fs/aufs/dinfo.c
+++ b/fs/aufs/dinfo.c
@@ -11,10 +11,8 @@
void au_di_init_once(void *_dinfo)
{
struct au_dinfo *dinfo = _dinfo;
- static struct lock_class_key aufs_di;
au_rw_init(&dinfo->di_rwsem);
- au_rw_class(&dinfo->di_rwsem, &aufs_di);
}
struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc)
@@ -26,14 +24,14 @@ struct au_dinfo *au_di_alloc(struct super_block *sb, unsigned int lsc)
if (unlikely(!dinfo))
goto out;
- nbr = au_sbend(sb) + 1;
+ nbr = au_sbbot(sb) + 1;
if (nbr <= 0)
nbr = 1;
dinfo->di_hdentry = kcalloc(nbr, sizeof(*dinfo->di_hdentry), GFP_NOFS);
if (dinfo->di_hdentry) {
au_rw_write_lock_nested(&dinfo->di_rwsem, lsc);
- dinfo->di_bstart = -1;
- dinfo->di_bend = -1;
+ dinfo->di_btop = -1;
+ dinfo->di_bbot = -1;
dinfo->di_bwh = -1;
dinfo->di_bdiropq = -1;
dinfo->di_tmpfile = 0;
@@ -52,14 +50,14 @@ out:
void au_di_free(struct au_dinfo *dinfo)
{
struct au_hdentry *p;
- aufs_bindex_t bend, bindex;
+ aufs_bindex_t bbot, bindex;
/* dentry may not be revalidated */
- bindex = dinfo->di_bstart;
+ bindex = dinfo->di_btop;
if (bindex >= 0) {
- bend = dinfo->di_bend;
+ bbot = dinfo->di_bbot;
p = dinfo->di_hdentry + bindex;
- while (bindex++ <= bend)
+ while (bindex++ <= bbot)
au_hdput(p++);
}
kfree(dinfo->di_hdentry);
@@ -82,8 +80,8 @@ void au_di_swap(struct au_dinfo *a, struct au_dinfo *b)
} while (0)
DiSwap(p, hdentry);
- DiSwap(bi, bstart);
- DiSwap(bi, bend);
+ DiSwap(bi, btop);
+ DiSwap(bi, bbot);
DiSwap(bi, bwh);
DiSwap(bi, bdiropq);
/* smp_mb(); */
@@ -96,8 +94,8 @@ void au_di_cp(struct au_dinfo *dst, struct au_dinfo *src)
AuRwMustWriteLock(&dst->di_rwsem);
AuRwMustWriteLock(&src->di_rwsem);
- dst->di_bstart = src->di_bstart;
- dst->di_bend = src->di_bend;
+ dst->di_btop = src->di_btop;
+ dst->di_bbot = src->di_bbot;
dst->di_bwh = src->di_bwh;
dst->di_bdiropq = src->di_bdiropq;
/* smp_mb(); */
@@ -139,7 +137,7 @@ int au_di_realloc(struct au_dinfo *dinfo, int nbr)
AuRwMustWriteLock(&dinfo->di_rwsem);
err = -ENOMEM;
- sz = sizeof(*hdp) * (dinfo->di_bend + 1);
+ sz = sizeof(*hdp) * (dinfo->di_bbot + 1);
if (!sz)
sz = sizeof(*hdp);
hdp = au_kzrealloc(dinfo->di_hdentry, sz, sizeof(*hdp) * nbr, GFP_NOFS);
@@ -307,7 +305,7 @@ struct dentry *au_h_dptr(struct dentry *dentry, aufs_bindex_t bindex)
DiMustAnyLock(dentry);
- if (au_dbstart(dentry) < 0 || bindex < au_dbstart(dentry))
+ if (au_dbtop(dentry) < 0 || bindex < au_dbtop(dentry))
return NULL;
AuDebugOn(bindex < 0);
d = au_di(dentry)->di_hdentry[0 + bindex].hd_dentry;
@@ -328,8 +326,8 @@ struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex)
AuDebugOn(d_really_is_negative(dentry));
h_dentry = NULL;
- if (au_dbstart(dentry) <= bindex
- && bindex <= au_dbend(dentry))
+ if (au_dbtop(dentry) <= bindex
+ && bindex <= au_dbbot(dentry))
h_dentry = au_h_dptr(dentry, bindex);
if (h_dentry && !au_d_linkable(h_dentry)) {
dget(h_dentry);
@@ -337,8 +335,8 @@ struct dentry *au_h_d_alias(struct dentry *dentry, aufs_bindex_t bindex)
}
inode = d_inode(dentry);
- AuDebugOn(bindex < au_ibstart(inode));
- AuDebugOn(au_ibend(inode) < bindex);
+ AuDebugOn(bindex < au_ibtop(inode));
+ AuDebugOn(au_ibbot(inode) < bindex);
h_inode = au_h_iptr(inode, bindex);
h_dentry = d_find_alias(h_inode);
if (h_dentry) {
@@ -368,30 +366,30 @@ out:
aufs_bindex_t au_dbtail(struct dentry *dentry)
{
- aufs_bindex_t bend, bwh;
+ aufs_bindex_t bbot, bwh;
- bend = au_dbend(dentry);
- if (0 <= bend) {
+ bbot = au_dbbot(dentry);
+ if (0 <= bbot) {
bwh = au_dbwh(dentry);
if (!bwh)
return bwh;
- if (0 < bwh && bwh < bend)
+ if (0 < bwh && bwh < bbot)
return bwh - 1;
}
- return bend;
+ return bbot;
}
aufs_bindex_t au_dbtaildir(struct dentry *dentry)
{
- aufs_bindex_t bend, bopq;
+ aufs_bindex_t bbot, bopq;
- bend = au_dbtail(dentry);
- if (0 <= bend) {
+ bbot = au_dbtail(dentry);
+ if (0 <= bbot) {
bopq = au_dbdiropq(dentry);
- if (0 <= bopq && bopq < bend)
- bend = bopq;
+ if (0 <= bopq && bopq < bbot)
+ bbot = bopq;
}
- return bend;
+ return bbot;
}
/* ---------------------------------------------------------------------- */
@@ -415,16 +413,16 @@ void au_set_h_dptr(struct dentry *dentry, aufs_bindex_t bindex,
int au_dbrange_test(struct dentry *dentry)
{
int err;
- aufs_bindex_t bstart, bend;
+ aufs_bindex_t btop, bbot;
err = 0;
- bstart = au_dbstart(dentry);
- bend = au_dbend(dentry);
- if (bstart >= 0)
- AuDebugOn(bend < 0 && bstart > bend);
+ btop = au_dbtop(dentry);
+ bbot = au_dbbot(dentry);
+ if (btop >= 0)
+ AuDebugOn(bbot < 0 && btop > bbot);
else {
err = -EIO;
- AuDebugOn(bend >= 0);
+ AuDebugOn(bbot >= 0);
}
return err;
@@ -457,68 +455,68 @@ void au_update_dbrange(struct dentry *dentry, int do_put_zero)
DiMustWriteLock(dentry);
dinfo = au_di(dentry);
- if (!dinfo || dinfo->di_bstart < 0)
+ if (!dinfo || dinfo->di_btop < 0)
return;
hdp = dinfo->di_hdentry;
if (do_put_zero) {
- aufs_bindex_t bindex, bend;
+ aufs_bindex_t bindex, bbot;
- bend = dinfo->di_bend;
- for (bindex = dinfo->di_bstart; bindex <= bend; bindex++) {
+ bbot = dinfo->di_bbot;
+ for (bindex = dinfo->di_btop; bindex <= bbot; bindex++) {
h_d = hdp[0 + bindex].hd_dentry;
if (h_d && d_is_negative(h_d))
au_set_h_dptr(dentry, bindex, NULL);
}
}
- dinfo->di_bstart = -1;
- while (++dinfo->di_bstart <= dinfo->di_bend)
- if (hdp[0 + dinfo->di_bstart].hd_dentry)
+ dinfo->di_btop = -1;
+ while (++dinfo->di_btop <= dinfo->di_bbot)
+ if (hdp[0 + dinfo->di_btop].hd_dentry)
break;
- if (dinfo->di_bstart > dinfo->di_bend) {
- dinfo->di_bstart = -1;
- dinfo->di_bend = -1;
+ if (dinfo->di_btop > dinfo->di_bbot) {
+ dinfo->di_btop = -1;
+ dinfo->di_bbot = -1;
return;
}
- dinfo->di_bend++;
- while (0 <= --dinfo->di_bend)
- if (hdp[0 + dinfo->di_bend].hd_dentry)
+ dinfo->di_bbot++;
+ while (0 <= --dinfo->di_bbot)
+ if (hdp[0 + dinfo->di_bbot].hd_dentry)
break;
- AuDebugOn(dinfo->di_bstart > dinfo->di_bend || dinfo->di_bend < 0);
+ AuDebugOn(dinfo->di_btop > dinfo->di_bbot || dinfo->di_bbot < 0);
}
-void au_update_dbstart(struct dentry *dentry)
+void au_update_dbtop(struct dentry *dentry)
{
- aufs_bindex_t bindex, bend;
+ aufs_bindex_t bindex, bbot;
struct dentry *h_dentry;
- bend = au_dbend(dentry);
- for (bindex = au_dbstart(dentry); bindex <= bend; bindex++) {
+ bbot = au_dbbot(dentry);
+ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++) {
h_dentry = au_h_dptr(dentry, bindex);
if (!h_dentry)
continue;
if (d_is_positive(h_dentry)) {
- au_set_dbstart(dentry, bindex);
+ au_set_dbtop(dentry, bindex);
return;
}
au_set_h_dptr(dentry, bindex, NULL);
}
}
-void au_update_dbend(struct dentry *dentry)
+void au_update_dbbot(struct dentry *dentry)
{
- aufs_bindex_t bindex, bstart;
+ aufs_bindex_t bindex, btop;
struct dentry *h_dentry;
- bstart = au_dbstart(dentry);
- for (bindex = au_dbend(dentry); bindex >= bstart; bindex--) {
+ btop = au_dbtop(dentry);
+ for (bindex = au_dbbot(dentry); bindex >= btop; bindex--) {
h_dentry = au_h_dptr(dentry, bindex);
if (!h_dentry)
continue;
if (d_is_positive(h_dentry)) {
- au_set_dbend(dentry, bindex);
+ au_set_dbbot(dentry, bindex);
return;
}
au_set_h_dptr(dentry, bindex, NULL);
@@ -527,10 +525,10 @@ void au_update_dbend(struct dentry *dentry)
int au_find_dbindex(struct dentry *dentry, struct dentry *h_dentry)
{
- aufs_bindex_t bindex, bend;
+ aufs_bindex_t bindex, bbot;
- bend = au_dbend(dentry);
- for (bindex = au_dbstart(dentry); bindex <= bend; bindex++)
+ bbot = au_dbbot(dentry);
+ for (bindex = au_dbtop(dentry); bindex <= bbot; bindex++)
if (au_h_dptr(dentry, bindex) == h_dentry)
return bindex;
return -1;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 10:09:51 +0000