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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
18#ifndef __XFS_INODE_H__
19#define __XFS_INODE_H__
20
Dave Chinner1fd71152013-08-12 20:49:35 +100021#include "xfs_inode_buf.h"
Dave Chinner5c4d97d2013-08-12 20:49:33 +100022#include "xfs_inode_fork.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24/*
Dave Chinner1fd71152013-08-12 20:49:35 +100025 * Kernel only inode definitions
Christoph Hellwig92bfc6e2008-11-28 14:23:41 +110026 */
Dave Chinner1fd71152013-08-12 20:49:35 +100027struct xfs_dinode;
28struct xfs_inode;
Barry Naujok847fff52008-10-30 17:05:38 +110029struct xfs_buf;
30struct xfs_bmap_free;
31struct xfs_bmbt_irec;
Barry Naujok847fff52008-10-30 17:05:38 +110032struct xfs_inode_log_item;
33struct xfs_mount;
34struct xfs_trans;
35struct xfs_dquot;
36
Linus Torvalds1da177e2005-04-16 15:20:36 -070037typedef struct xfs_inode {
38 /* Inode linking and identification information. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 struct xfs_mount *i_mount; /* fs mount struct ptr */
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 struct xfs_dquot *i_udquot; /* user dquot */
41 struct xfs_dquot *i_gdquot; /* group dquot */
Chandra Seetharaman92f8ff72013-07-11 00:00:40 -050042 struct xfs_dquot *i_pdquot; /* project dquot */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
44 /* Inode location stuff */
45 xfs_ino_t i_ino; /* inode number (agno/agino)*/
Christoph Hellwig92bfc6e2008-11-28 14:23:41 +110046 struct xfs_imap i_imap; /* location for xfs_imap() */
Linus Torvalds1da177e2005-04-16 15:20:36 -070047
48 /* Extent information. */
49 xfs_ifork_t *i_afp; /* attribute fork pointer */
50 xfs_ifork_t i_df; /* data fork */
51
Dave Chinner32c54832013-10-29 22:11:46 +110052 /* operations vectors */
53 const struct xfs_dir_ops *d_ops; /* directory ops vector */
54
Linus Torvalds1da177e2005-04-16 15:20:36 -070055 /* Transaction and locking information. */
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 struct xfs_inode_log_item *i_itemp; /* logging information */
57 mrlock_t i_lock; /* inode lock */
58 mrlock_t i_iolock; /* inode IO lock */
Dave Chinner653c60b2015-02-23 21:43:37 +110059 mrlock_t i_mmaplock; /* inode mmap IO lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 atomic_t i_pincount; /* inode pin count */
David Chinnerf273ab82006-09-28 11:06:03 +100061 spinlock_t i_flags_lock; /* inode i_flags lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 /* Miscellaneous state. */
Christoph Hellwig49e4c702011-12-18 20:00:08 +000063 unsigned long i_flags; /* see defined flags below */
Linus Torvalds1da177e2005-04-16 15:20:36 -070064 unsigned int i_delayed_blks; /* count of delay alloc blks */
65
Christoph Hellwig347d1c02007-08-28 13:57:51 +100066 xfs_icdinode_t i_d; /* most of ondisk inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -070067
David Chinnerbf904242008-10-30 17:36:14 +110068 /* VFS inode */
69 struct inode i_vnode; /* embedded VFS inode */
Linus Torvalds1da177e2005-04-16 15:20:36 -070070} xfs_inode_t;
71
David Chinner01651642008-08-13 15:45:15 +100072/* Convert from vfs inode to xfs inode */
73static inline struct xfs_inode *XFS_I(struct inode *inode)
74{
David Chinnerbf904242008-10-30 17:36:14 +110075 return container_of(inode, struct xfs_inode, i_vnode);
David Chinner01651642008-08-13 15:45:15 +100076}
77
David Chinner01651642008-08-13 15:45:15 +100078/* convert from xfs inode to vfs inode */
79static inline struct inode *VFS_I(struct xfs_inode *ip)
80{
David Chinnerbf904242008-10-30 17:36:14 +110081 return &ip->i_vnode;
David Chinner01651642008-08-13 15:45:15 +100082}
David Chinner01651642008-08-13 15:45:15 +100083
David Chinner7a18c382006-11-11 18:04:54 +110084/*
Christoph Hellwigce7ae1512011-12-18 20:00:11 +000085 * For regular files we only update the on-disk filesize when actually
86 * writing data back to disk. Until then only the copy in the VFS inode
87 * is uptodate.
88 */
89static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip)
90{
91 if (S_ISREG(ip->i_d.di_mode))
92 return i_size_read(VFS_I(ip));
93 return ip->i_d.di_size;
94}
95
96/*
Christoph Hellwig6923e682012-02-29 09:53:49 +000097 * If this I/O goes past the on-disk inode size update it unless it would
98 * be past the current in-core inode size.
99 */
100static inline xfs_fsize_t
101xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size)
102{
103 xfs_fsize_t i_size = i_size_read(VFS_I(ip));
104
Brian Fosterce57bcf2014-10-02 09:21:53 +1000105 if (new_size > i_size || new_size < 0)
Christoph Hellwig6923e682012-02-29 09:53:49 +0000106 new_size = i_size;
107 return new_size > ip->i_d.di_size ? new_size : 0;
108}
109
110/*
David Chinner7a18c382006-11-11 18:04:54 +1100111 * i_flags helper functions
112 */
113static inline void
114__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
115{
116 ip->i_flags |= flags;
117}
118
119static inline void
120xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
121{
122 spin_lock(&ip->i_flags_lock);
123 __xfs_iflags_set(ip, flags);
124 spin_unlock(&ip->i_flags_lock);
125}
126
127static inline void
128xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
129{
130 spin_lock(&ip->i_flags_lock);
131 ip->i_flags &= ~flags;
132 spin_unlock(&ip->i_flags_lock);
133}
134
135static inline int
136__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
137{
138 return (ip->i_flags & flags);
139}
140
141static inline int
142xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
143{
144 int ret;
145 spin_lock(&ip->i_flags_lock);
146 ret = __xfs_iflags_test(ip, flags);
147 spin_unlock(&ip->i_flags_lock);
148 return ret;
149}
Christoph Hellwig09262b42007-08-29 11:44:50 +1000150
151static inline int
152xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
153{
154 int ret;
155
156 spin_lock(&ip->i_flags_lock);
157 ret = ip->i_flags & flags;
158 if (ret)
159 ip->i_flags &= ~flags;
160 spin_unlock(&ip->i_flags_lock);
161 return ret;
162}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163
Christoph Hellwig474fce02011-12-18 20:00:09 +0000164static inline int
165xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short flags)
166{
167 int ret;
168
169 spin_lock(&ip->i_flags_lock);
170 ret = ip->i_flags & flags;
171 if (!ret)
172 ip->i_flags |= flags;
173 spin_unlock(&ip->i_flags_lock);
174 return ret;
175}
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177/*
Arkadiusz Mi?kiewicz67430992010-09-26 06:10:18 +0000178 * Project quota id helpers (previously projid was 16bit only
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300179 * and using two 16bit values to hold new 32bit projid was chosen
Arkadiusz Mi?kiewicz67430992010-09-26 06:10:18 +0000180 * to retain compatibility with "old" filesystems).
181 */
182static inline prid_t
183xfs_get_projid(struct xfs_inode *ip)
184{
185 return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo;
186}
187
188static inline void
189xfs_set_projid(struct xfs_inode *ip,
190 prid_t projid)
191{
192 ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16);
193 ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff);
194}
195
Zhi Yong Wu163467d2013-12-18 08:22:39 +0800196static inline prid_t
197xfs_get_initial_prid(struct xfs_inode *dp)
198{
199 if (dp->i_d.di_flags & XFS_DIFLAG_PROJINHERIT)
200 return xfs_get_projid(dp);
201
202 return XFS_PROJID_DEFAULT;
203}
204
Arkadiusz Mi?kiewicz67430992010-09-26 06:10:18 +0000205/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 * In-core inode flags.
207 */
Christoph Hellwig474fce02011-12-18 20:00:09 +0000208#define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */
209#define XFS_ISTALE (1 << 1) /* inode has been staled */
210#define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */
211#define XFS_INEW (1 << 3) /* inode has just been allocated */
Christoph Hellwig474fce02011-12-18 20:00:09 +0000212#define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */
213#define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */
214#define __XFS_IFLOCK_BIT 7 /* inode is being flushed right now */
215#define XFS_IFLOCK (1 << __XFS_IFLOCK_BIT)
Christoph Hellwigf392e632011-12-18 20:00:10 +0000216#define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */
217#define XFS_IPINNED (1 << __XFS_IPINNED_BIT)
Dave Chinner5132ba82012-03-22 05:15:10 +0000218#define XFS_IDONTCACHE (1 << 9) /* don't cache the inode long term */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
220/*
Dave Chinner778e24b2011-06-23 01:34:59 +0000221 * Per-lifetime flags need to be reset when re-using a reclaimable inode during
Dave Chinner5132ba82012-03-22 05:15:10 +0000222 * inode lookup. This prevents unintended behaviour on the new inode from
Dave Chinner778e24b2011-06-23 01:34:59 +0000223 * ocurring.
224 */
225#define XFS_IRECLAIM_RESET_FLAGS \
226 (XFS_IRECLAIMABLE | XFS_IRECLAIM | \
Christoph Hellwigf37211c2014-04-23 07:11:51 +1000227 XFS_IDIRTY_RELEASE | XFS_ITRUNCATED)
Dave Chinner778e24b2011-06-23 01:34:59 +0000228
229/*
Christoph Hellwig474fce02011-12-18 20:00:09 +0000230 * Synchronize processes attempting to flush the in-core inode back to disk.
231 */
232
233extern void __xfs_iflock(struct xfs_inode *ip);
234
235static inline int xfs_iflock_nowait(struct xfs_inode *ip)
236{
237 return !xfs_iflags_test_and_set(ip, XFS_IFLOCK);
238}
239
240static inline void xfs_iflock(struct xfs_inode *ip)
241{
242 if (!xfs_iflock_nowait(ip))
243 __xfs_iflock(ip);
244}
245
246static inline void xfs_ifunlock(struct xfs_inode *ip)
247{
248 xfs_iflags_clear(ip, XFS_IFLOCK);
Alex Elder311f08a2013-02-04 10:13:11 -0600249 smp_mb();
Christoph Hellwig474fce02011-12-18 20:00:09 +0000250 wake_up_bit(&ip->i_flags, __XFS_IFLOCK_BIT);
251}
252
253static inline int xfs_isiflocked(struct xfs_inode *ip)
254{
255 return xfs_iflags_test(ip, XFS_IFLOCK);
256}
257
258/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259 * Flags for inode locking.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000260 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
261 * 1<<16 - 1<<32-1 -- lockdep annotation (integers)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 */
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000263#define XFS_IOLOCK_EXCL (1<<0)
264#define XFS_IOLOCK_SHARED (1<<1)
265#define XFS_ILOCK_EXCL (1<<2)
266#define XFS_ILOCK_SHARED (1<<3)
Dave Chinner653c60b2015-02-23 21:43:37 +1100267#define XFS_MMAPLOCK_EXCL (1<<4)
268#define XFS_MMAPLOCK_SHARED (1<<5)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000270#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
Dave Chinner653c60b2015-02-23 21:43:37 +1100271 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \
272 | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000273
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000274#define XFS_LOCK_FLAGS \
275 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \
276 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \
277 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \
Dave Chinner653c60b2015-02-23 21:43:37 +1100278 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \
279 { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \
280 { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" }
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000281
282
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000283/*
284 * Flags for lockdep annotations.
285 *
Christoph Hellwig96811532011-01-25 09:06:21 +0000286 * XFS_LOCK_PARENT - for directory operations that require locking a
287 * parent directory inode and a child entry inode. The parent gets locked
288 * with this flag so it gets a lockdep subclass of 1 and the child entry
289 * lock will have a lockdep subclass of 0.
290 *
291 * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary
292 * inodes do not participate in the normal lock order, and thus have their
293 * own subclasses.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000294 *
David Chinner0f1145c2007-06-29 17:26:09 +1000295 * XFS_LOCK_INUMORDER - for locking several inodes at the some time
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000296 * with xfs_lock_inodes(). This flag is used as the starting subclass
297 * and each subsequent lock acquired will increment the subclass by one.
Christoph Hellwig96811532011-01-25 09:06:21 +0000298 * So the first lock acquired will have a lockdep subclass of 4, the
299 * second lock will have a lockdep subclass of 5, and so on. It is
David Chinner0f1145c2007-06-29 17:26:09 +1000300 * the responsibility of the class builder to shift this to the correct
301 * portion of the lock_mode lockdep mask.
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000302 */
David Chinner0f1145c2007-06-29 17:26:09 +1000303#define XFS_LOCK_PARENT 1
Christoph Hellwig96811532011-01-25 09:06:21 +0000304#define XFS_LOCK_RTBITMAP 2
305#define XFS_LOCK_RTSUM 3
306#define XFS_LOCK_INUMORDER 4
David Chinner0f1145c2007-06-29 17:26:09 +1000307
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000308#define XFS_IOLOCK_SHIFT 16
David Chinner0f1145c2007-06-29 17:26:09 +1000309#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000310
Dave Chinner653c60b2015-02-23 21:43:37 +1100311#define XFS_MMAPLOCK_SHIFT 20
312
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000313#define XFS_ILOCK_SHIFT 24
David Chinner0f1145c2007-06-29 17:26:09 +1000314#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
Christoph Hellwig96811532011-01-25 09:06:21 +0000315#define XFS_ILOCK_RTBITMAP (XFS_LOCK_RTBITMAP << XFS_ILOCK_SHIFT)
316#define XFS_ILOCK_RTSUM (XFS_LOCK_RTSUM << XFS_ILOCK_SHIFT)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000317
Dave Chinner653c60b2015-02-23 21:43:37 +1100318#define XFS_IOLOCK_DEP_MASK 0x000f0000
319#define XFS_MMAPLOCK_DEP_MASK 0x00f00000
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000320#define XFS_ILOCK_DEP_MASK 0xff000000
Dave Chinner653c60b2015-02-23 21:43:37 +1100321#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | \
322 XFS_MMAPLOCK_DEP_MASK | \
323 XFS_ILOCK_DEP_MASK)
Lachlan McIlroyf7c66ce2007-05-08 13:50:19 +1000324
Dave Chinner653c60b2015-02-23 21:43:37 +1100325#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \
326 >> XFS_IOLOCK_SHIFT)
327#define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \
328 >> XFS_MMAPLOCK_SHIFT)
329#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \
330 >> XFS_ILOCK_SHIFT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331
332/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 * For multiple groups support: if S_ISGID bit is set in the parent
334 * directory, group of new file is set to that of the parent, and
335 * new subdirectory gets S_ISGID bit from parent.
336 */
Christoph Hellwigbd186aa2007-08-30 17:21:12 +1000337#define XFS_INHERIT_GID(pip) \
338 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
339 ((pip)->i_d.di_mode & S_ISGID))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Dave Chinnerc24b5df2013-08-12 20:49:45 +1000341int xfs_release(struct xfs_inode *ip);
Brian Foster74564fb2013-09-20 11:06:12 -0400342void xfs_inactive(struct xfs_inode *ip);
Dave Chinnerc24b5df2013-08-12 20:49:45 +1000343int xfs_lookup(struct xfs_inode *dp, struct xfs_name *name,
344 struct xfs_inode **ipp, struct xfs_name *ci_name);
345int xfs_create(struct xfs_inode *dp, struct xfs_name *name,
346 umode_t mode, xfs_dev_t rdev, struct xfs_inode **ipp);
Zhi Yong Wu99b64362013-12-18 08:22:40 +0800347int xfs_create_tmpfile(struct xfs_inode *dp, struct dentry *dentry,
Brian Foster330033d2014-04-17 08:15:30 +1000348 umode_t mode, struct xfs_inode **ipp);
Dave Chinnerc24b5df2013-08-12 20:49:45 +1000349int xfs_remove(struct xfs_inode *dp, struct xfs_name *name,
350 struct xfs_inode *ip);
351int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip,
352 struct xfs_name *target_name);
353int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name,
354 struct xfs_inode *src_ip, struct xfs_inode *target_dp,
355 struct xfs_name *target_name,
Carlos Maiolinod31a1822014-12-24 08:51:42 +1100356 struct xfs_inode *target_ip, unsigned int flags);
Dave Chinnerc24b5df2013-08-12 20:49:45 +1000357
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358void xfs_ilock(xfs_inode_t *, uint);
359int xfs_ilock_nowait(xfs_inode_t *, uint);
360void xfs_iunlock(xfs_inode_t *, uint);
361void xfs_ilock_demote(xfs_inode_t *, uint);
Christoph Hellwig579aa9c2008-04-22 17:34:00 +1000362int xfs_isilocked(xfs_inode_t *, uint);
Christoph Hellwig309ecac2013-12-06 12:30:09 -0800363uint xfs_ilock_data_map_shared(struct xfs_inode *);
Christoph Hellwigefa70be2013-12-18 02:14:39 -0800364uint xfs_ilock_attr_map_shared(struct xfs_inode *);
Al Viro576b1d62011-07-26 02:50:15 -0400365int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, umode_t,
Arkadiusz Mi?kiewicz67430992010-09-26 06:10:18 +0000366 xfs_nlink_t, xfs_dev_t, prid_t, int,
Christoph Hellwig08358902012-07-04 10:54:47 -0400367 struct xfs_buf **, xfs_inode_t **);
Christoph Hellwig347d1c02007-08-28 13:57:51 +1000368
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369uint xfs_ip2xflags(struct xfs_inode *);
Christoph Hellwig45ba5982007-12-07 14:07:20 +1100370uint xfs_dic2xflags(struct xfs_dinode *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
372 struct xfs_bmap_free *);
Christoph Hellwig8f04c472011-07-08 14:34:34 +0200373int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *,
374 int, xfs_fsize_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377void xfs_iext_realloc(xfs_inode_t *, int, int);
Dave Chinner1fd71152013-08-12 20:49:35 +1000378
Dave Chinner777df5a2010-02-06 12:37:26 +1100379void xfs_iunpin_wait(xfs_inode_t *);
Dave Chinner1fd71152013-08-12 20:49:35 +1000380#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
381
Christoph Hellwig4c468192012-04-23 15:58:36 +1000382int xfs_iflush(struct xfs_inode *, struct xfs_buf **);
Christoph Hellwigcfa853e2008-04-22 17:34:06 +1000383void xfs_lock_inodes(xfs_inode_t **, int, uint);
Christoph Hellwige1cccd92008-08-13 16:18:07 +1000384void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385
Dave Chinner2a0ec1d2012-04-23 15:59:02 +1000386xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip);
387
Dave Chinnere546cb72013-08-12 20:49:47 +1000388int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t,
389 xfs_nlink_t, xfs_dev_t, prid_t, int,
390 struct xfs_inode **, int *);
391int xfs_droplink(struct xfs_trans *, struct xfs_inode *);
392int xfs_bumplink(struct xfs_trans *, struct xfs_inode *);
Dave Chinnere546cb72013-08-12 20:49:47 +1000393
Dave Chinnerc24b5df2013-08-12 20:49:45 +1000394/* from xfs_file.c */
Christoph Hellwig8add71c2015-02-02 09:53:56 +1100395enum xfs_prealloc_flags {
396 XFS_PREALLOC_SET = (1 << 1),
397 XFS_PREALLOC_CLEAR = (1 << 2),
398 XFS_PREALLOC_SYNC = (1 << 3),
399 XFS_PREALLOC_INVISIBLE = (1 << 4),
400};
401
Dave Chinner5885ebd2015-02-23 22:37:08 +1100402int xfs_update_prealloc_flags(struct xfs_inode *ip,
403 enum xfs_prealloc_flags flags);
404int xfs_zero_eof(struct xfs_inode *ip, xfs_off_t offset,
405 xfs_fsize_t isize, bool *did_zeroing);
406int xfs_iozero(struct xfs_inode *ip, loff_t pos, size_t count);
Dave Chinnerc24b5df2013-08-12 20:49:45 +1000407
408
Dave Chinner58c90472015-02-23 22:38:08 +1100409/* from xfs_iops.c */
410/*
411 * When setting up a newly allocated inode, we need to call
412 * xfs_finish_inode_setup() once the inode is fully instantiated at
413 * the VFS level to prevent the rest of the world seeing the inode
414 * before we've completed instantiation. Otherwise we can do it
415 * the moment the inode lookup is complete.
416 */
417extern void xfs_setup_inode(struct xfs_inode *ip);
418static inline void xfs_finish_inode_setup(struct xfs_inode *ip)
419{
420 xfs_iflags_clear(ip, XFS_INEW);
421 barrier();
422 unlock_new_inode(VFS_I(ip));
423}
424
425static inline void xfs_setup_existing_inode(struct xfs_inode *ip)
426{
427 xfs_setup_inode(ip);
428 xfs_finish_inode_setup(ip);
429}
430
Christoph Hellwig5a8d0f32008-12-03 12:20:40 +0100431#define IHOLD(ip) \
432do { \
433 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
Al Viro7de9c6ee2010-10-23 11:11:40 -0400434 ihold(VFS_I(ip)); \
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000435 trace_xfs_ihold(ip, _THIS_IP_); \
Christoph Hellwig5a8d0f32008-12-03 12:20:40 +0100436} while (0)
437
438#define IRELE(ip) \
439do { \
Christoph Hellwig0b1b2132009-12-14 23:14:59 +0000440 trace_xfs_irele(ip, _THIS_IP_); \
Christoph Hellwig5a8d0f32008-12-03 12:20:40 +0100441 iput(VFS_I(ip)); \
442} while (0)
443
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444extern struct kmem_zone *xfs_inode_zone;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445
Dave Chinnerb92cc59f62014-08-04 13:28:20 +1000446/*
447 * Flags for read/write calls
448 */
449#define XFS_IO_ISDIRECT 0x00001 /* bypass page cache */
450#define XFS_IO_INVIS 0x00002 /* don't update inode timestamps */
451
452#define XFS_IO_FLAGS \
453 { XFS_IO_ISDIRECT, "DIRECT" }, \
454 { XFS_IO_INVIS, "INVIS"}
455
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456#endif /* __XFS_INODE_H__ */