1 #ifndef _VX_VS_DLIMIT_H
2 #define _VX_VS_DLIMIT_H
4 #include <linux/kernel.h>
5 #include <linux/rcupdate.h>
6 #include <linux/sched.h>
8 #include "vserver/context.h"
9 #include "vserver/dlimit.h"
10 #include "vserver/debug.h"
13 #define get_dl_info(i) __get_dl_info(i,__FILE__,__LINE__)
15 static inline struct dl_info *__get_dl_info(struct dl_info *dli,
16 const char *_file, int _line)
20 vxlprintk(VXD_CBIT(dlim, 4), "get_dl_info(%p[#%d.%d])",
21 dli, dli?dli->dl_xid:0, dli?atomic_read(&dli->dl_usecnt):0,
23 atomic_inc(&dli->dl_usecnt);
28 #define free_dl_info(i) \
29 call_rcu(&i->dl_rcu, rcu_free_dl_info);
31 #define put_dl_info(i) __put_dl_info(i,__FILE__,__LINE__)
33 static inline void __put_dl_info(struct dl_info *dli,
34 const char *_file, int _line)
38 vxlprintk(VXD_CBIT(dlim, 4), "put_dl_info(%p[#%d.%d])",
39 dli, dli?dli->dl_xid:0, dli?atomic_read(&dli->dl_usecnt):0,
41 if (atomic_dec_and_test(&dli->dl_usecnt))
46 #define __dlimit_char(d) ((d)?'*':' ')
48 static inline int __dl_alloc_space(struct super_block *sb,
49 xid_t xid, dlsize_t nr, const char *file, int line)
51 struct dl_info *dli = NULL;
56 dli = locate_dl_info(sb, xid);
60 spin_lock(&dli->dl_lock);
61 ret = (dli->dl_space_used + nr > dli->dl_space_total);
63 dli->dl_space_used += nr;
64 spin_unlock(&dli->dl_lock);
67 vxlprintk(VXD_CBIT(dlim, 1),
68 "ALLOC (%p,#%d)%c %lld bytes (%d)",
69 sb, xid, __dlimit_char(dli), (long long)nr,
74 static inline void __dl_free_space(struct super_block *sb,
75 xid_t xid, dlsize_t nr, const char *_file, int _line)
77 struct dl_info *dli = NULL;
81 dli = locate_dl_info(sb, xid);
85 spin_lock(&dli->dl_lock);
86 if (dli->dl_space_used > nr)
87 dli->dl_space_used -= nr;
89 dli->dl_space_used = 0;
90 spin_unlock(&dli->dl_lock);
93 vxlprintk(VXD_CBIT(dlim, 1),
94 "FREE (%p,#%d)%c %lld bytes",
95 sb, xid, __dlimit_char(dli), (long long)nr,
99 static inline int __dl_alloc_inode(struct super_block *sb,
100 xid_t xid, const char *_file, int _line)
105 dli = locate_dl_info(sb, xid);
109 spin_lock(&dli->dl_lock);
110 ret = (dli->dl_inodes_used >= dli->dl_inodes_total);
112 dli->dl_inodes_used++;
115 printk("VSW: DLIMIT hit (%p,#%d), inode %d>=%d @ %s:%d\n",
117 dli->dl_inodes_used, dli->dl_inodes_total,
120 spin_unlock(&dli->dl_lock);
123 vxlprintk(VXD_CBIT(dlim, 0),
124 "ALLOC (%p,#%d)%c inode (%d)",
125 sb, xid, __dlimit_char(dli), ret, _file, _line);
129 static inline void __dl_free_inode(struct super_block *sb,
130 xid_t xid, const char *_file, int _line)
134 dli = locate_dl_info(sb, xid);
138 spin_lock(&dli->dl_lock);
139 if (dli->dl_inodes_used > 1)
140 dli->dl_inodes_used--;
142 dli->dl_inodes_used = 0;
143 spin_unlock(&dli->dl_lock);
146 vxlprintk(VXD_CBIT(dlim, 0),
147 "FREE (%p,#%d)%c inode",
148 sb, xid, __dlimit_char(dli), _file, _line);
151 static inline void __dl_adjust_block(struct super_block *sb, xid_t xid,
152 unsigned int *free_blocks, unsigned int *root_blocks,
153 const char *_file, int _line)
156 uint64_t broot, bfree;
158 dli = locate_dl_info(sb, xid);
162 spin_lock(&dli->dl_lock);
163 broot = (dli->dl_space_total -
164 (dli->dl_space_total >> 10) * dli->dl_nrlmult)
165 >> sb->s_blocksize_bits;
166 bfree = (dli->dl_space_total - dli->dl_space_used)
167 >> sb->s_blocksize_bits;
168 spin_unlock(&dli->dl_lock);
170 vxlprintk(VXD_CBIT(dlim, 2),
171 "ADJUST: %lld,%lld on %d,%d [mult=%d]",
172 (long long)bfree, (long long)broot,
173 *free_blocks, *root_blocks, dli->dl_nrlmult,
176 if (*free_blocks > bfree)
177 *free_blocks = bfree;
180 if (*root_blocks > broot)
181 *root_blocks = broot;
187 #define DLIMIT_ALLOC_BLOCK(sb, xid, nr) \
188 __dl_alloc_space(sb, xid, \
189 ((dlsize_t)(nr)) << (sb)->s_blocksize_bits, \
192 #define DLIMIT_FREE_BLOCK(sb, xid, nr) \
193 __dl_free_space(sb, xid, \
194 ((dlsize_t)(nr)) << (sb)->s_blocksize_bits, \
197 #define DLIMIT_ALLOC_INODE(sb, xid) \
198 __dl_alloc_inode(sb, xid, __FILE__, __LINE__ )
200 #define DLIMIT_FREE_INODE(sb, xid) \
201 __dl_free_inode(sb, xid, __FILE__, __LINE__ )
204 #define DLIMIT_ADJUST_BLOCK(sb, xid, fb, rb) \
205 __dl_adjust_block(sb, xid, fb, rb, __FILE__, __LINE__ )
209 #warning duplicate inclusion