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Commit 1463079f authored by Christoph Hellwig's avatar Christoph Hellwig
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[XFS] really kill the pagebuf vs xfs_buf confusion 

SGI Modid: xfs-linux:xfs-kern:167628a
parent b2d94fa0
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Showing with 132 additions and 141 deletions
fs/xfs/linux/xfs_buf.c
View file @ 1463079f
......@@ -36,7 +36,7 @@
* The page_buf module provides an abstract buffer cache model on top of
* the Linux page cache. Cached metadata blocks for a file system are
* hashed to the inode for the block device. The page_buf module
* assembles buffer (page_buf_t) objects on demand to aggregate such
* assembles buffer (xfs_buf_t) objects on demand to aggregate such
* cached pages for I/O.
*
*
......@@ -71,7 +71,7 @@
STATIC kmem_cache_t *pagebuf_cache;
STATIC void pagebuf_daemon_wakeup(void);
STATIC void pagebuf_delwri_queue(page_buf_t *, int);
STATIC void pagebuf_delwri_queue(xfs_buf_t *, int);
STATIC struct workqueue_struct *pagebuf_logio_workqueue;
STATIC struct workqueue_struct *pagebuf_dataio_workqueue;
......@@ -82,7 +82,7 @@ STATIC struct workqueue_struct *pagebuf_dataio_workqueue;
#ifdef PAGEBUF_TRACE
void
pagebuf_trace(
page_buf_t *pb,
xfs_buf_t *pb,
char *id,
void *data,
void *ra)
......@@ -169,7 +169,7 @@ _bhash(
* Mapping of multi-page buffers into contiguous virtual space
*/
STATIC void *pagebuf_mapout_locked(page_buf_t *);
STATIC void *pagebuf_mapout_locked(xfs_buf_t *);
typedef struct a_list {
void *vm_addr;
......@@ -229,8 +229,8 @@ purge_addresses(void)
STATIC void
_pagebuf_initialize(
page_buf_t *pb,
pb_target_t *target,
xfs_buf_t *pb,
xfs_buftarg_t *target,
loff_t range_base,
size_t range_length,
page_buf_flags_t flags)
......@@ -240,7 +240,7 @@ _pagebuf_initialize(
*/
flags &= ~(PBF_LOCK|PBF_MAPPED|PBF_DONT_BLOCK|PBF_READ_AHEAD);
memset(pb, 0, sizeof(page_buf_t));
memset(pb, 0, sizeof(xfs_buf_t));
atomic_set(&pb->pb_hold, 1);
init_MUTEX_LOCKED(&pb->pb_iodonesema);
INIT_LIST_HEAD(&pb->pb_list);
......@@ -256,7 +256,7 @@ _pagebuf_initialize(
*/
pb->pb_buffer_length = pb->pb_count_desired = range_length;
pb->pb_flags = flags | PBF_NONE;
pb->pb_bn = PAGE_BUF_DADDR_NULL;
pb->pb_bn = XFS_BUF_DADDR_NULL;
atomic_set(&pb->pb_pin_count, 0);
init_waitqueue_head(&pb->pb_waiters);
......@@ -270,7 +270,7 @@ _pagebuf_initialize(
*/
STATIC int
_pagebuf_get_pages(
page_buf_t *pb,
xfs_buf_t *pb,
int page_count,
page_buf_flags_t flags)
{
......@@ -296,7 +296,7 @@ _pagebuf_get_pages(
*/
STATIC inline void
_pagebuf_freepages(
page_buf_t *pb)
xfs_buf_t *pb)
{
int buf_index;
......@@ -318,7 +318,7 @@ _pagebuf_freepages(
*/
void
pagebuf_free(
page_buf_t *pb)
xfs_buf_t *pb)
{
PB_TRACE(pb, "free", 0);
......@@ -367,7 +367,7 @@ pagebuf_free(
*/
STATIC int
_pagebuf_lookup_pages(
page_buf_t *pb,
xfs_buf_t *pb,
struct address_space *aspace,
page_buf_flags_t flags)
{
......@@ -531,20 +531,20 @@ _pagebuf_lookup_pages(
* which may imply that this call will block until those buffers
* are unlocked. No I/O is implied by this call.
*/
STATIC page_buf_t *
STATIC xfs_buf_t *
_pagebuf_find( /* find buffer for block */
pb_target_t *target,/* target for block */
xfs_buftarg_t *target,/* target for block */
loff_t ioff, /* starting offset of range */
size_t isize, /* length of range */
page_buf_flags_t flags, /* PBF_TRYLOCK */
page_buf_t *new_pb)/* newly allocated buffer */
xfs_buf_t *new_pb)/* newly allocated buffer */
{
loff_t range_base;
size_t range_length;
int hval;
pb_hash_t *h;
struct list_head *p;
page_buf_t *pb;
xfs_buf_t *pb;
int not_locked;
range_base = (ioff << BBSHIFT);
......@@ -561,7 +561,7 @@ _pagebuf_find( /* find buffer for block */
spin_lock(&h->pb_hash_lock);
list_for_each(p, &h->pb_hash) {
pb = list_entry(p, page_buf_t, pb_hash_list);
pb = list_entry(p, xfs_buf_t, pb_hash_list);
if (pb->pb_target == target &&
pb->pb_file_offset == range_base &&
......@@ -641,10 +641,10 @@ _pagebuf_find( /* find buffer for block */
* pages are present in the buffer, not all of every page may be
* valid.
*/
page_buf_t *
xfs_buf_t *
pagebuf_find( /* find buffer for block */
/* if the block is in memory */
pb_target_t *target,/* target for block */
xfs_buftarg_t *target,/* target for block */
loff_t ioff, /* starting offset of range */
size_t isize, /* length of range */
page_buf_flags_t flags) /* PBF_TRYLOCK */
......@@ -661,14 +661,14 @@ pagebuf_find( /* find buffer for block */
* although backing storage may not be. If PBF_READ is set in
* flags, pagebuf_iostart is called also.
*/
page_buf_t *
xfs_buf_t *
pagebuf_get( /* allocate a buffer */
pb_target_t *target,/* target for buffer */
xfs_buftarg_t *target,/* target for buffer */
loff_t ioff, /* starting offset of range */
size_t isize, /* length of range */
page_buf_flags_t flags) /* PBF_TRYLOCK */
{
page_buf_t *pb, *new_pb;
xfs_buf_t *pb, *new_pb;
int error;
new_pb = pagebuf_allocate(flags);
......@@ -732,14 +732,14 @@ pagebuf_get( /* allocate a buffer */
/*
* Create a skeletal pagebuf (no pages associated with it).
*/
page_buf_t *
xfs_buf_t *
pagebuf_lookup(
struct pb_target *target,
xfs_buftarg_t *target,
loff_t ioff,
size_t isize,
page_buf_flags_t flags)
{
page_buf_t *pb;
xfs_buf_t *pb;
pb = pagebuf_allocate(flags);
if (pb) {
......@@ -754,7 +754,7 @@ pagebuf_lookup(
*/
void
pagebuf_readahead(
pb_target_t *target,
xfs_buftarg_t *target,
loff_t ioff,
size_t isize,
page_buf_flags_t flags)
......@@ -771,12 +771,12 @@ pagebuf_readahead(
pagebuf_get(target, ioff, isize, flags);
}
page_buf_t *
xfs_buf_t *
pagebuf_get_empty(
size_t len,
pb_target_t *target)
xfs_buftarg_t *target)
{
page_buf_t *pb;
xfs_buf_t *pb;
pb = pagebuf_allocate(0);
if (pb)
......@@ -798,7 +798,7 @@ mem_to_page(
int
pagebuf_associate_memory(
page_buf_t *pb,
xfs_buf_t *pb,
void *mem,
size_t len)
{
......@@ -906,7 +906,7 @@ pagebuf_get_no_daddr(
*/
void
pagebuf_hold(
page_buf_t *pb)
xfs_buf_t *pb)
{
atomic_inc(&pb->pb_hold);
PB_TRACE(pb, "hold", 0);
......@@ -920,7 +920,7 @@ pagebuf_hold(
*/
void
pagebuf_rele(
page_buf_t *pb)
xfs_buf_t *pb)
{
pb_hash_t *hash = pb_hash(pb);
......@@ -979,7 +979,7 @@ pagebuf_rele(
int
pagebuf_cond_lock( /* lock buffer, if not locked */
/* returns -EBUSY if locked) */
page_buf_t *pb)
xfs_buf_t *pb)
{
int locked;
......@@ -998,7 +998,7 @@ pagebuf_cond_lock( /* lock buffer, if not locked */
*/
int
pagebuf_lock_value(
page_buf_t *pb)
xfs_buf_t *pb)
{
return(atomic_read(&pb->pb_sema.count));
}
......@@ -1013,7 +1013,7 @@ pagebuf_lock_value(
*/
int
pagebuf_lock(
page_buf_t *pb)
xfs_buf_t *pb)
{
PB_TRACE(pb, "lock", 0);
if (atomic_read(&pb->pb_io_remaining))
......@@ -1033,7 +1033,7 @@ pagebuf_lock(
*/
void
pagebuf_unlock( /* unlock buffer */
page_buf_t *pb) /* buffer to unlock */
xfs_buf_t *pb) /* buffer to unlock */
{
PB_CLEAR_OWNER(pb);
up(&pb->pb_sema);
......@@ -1061,7 +1061,7 @@ pagebuf_unlock( /* unlock buffer */
*/
void
pagebuf_pin(
page_buf_t *pb)
xfs_buf_t *pb)
{
atomic_inc(&pb->pb_pin_count);
PB_TRACE(pb, "pin", (long)pb->pb_pin_count.counter);
......@@ -1076,7 +1076,7 @@ pagebuf_pin(
*/
void
pagebuf_unpin(
page_buf_t *pb)
xfs_buf_t *pb)
{
if (atomic_dec_and_test(&pb->pb_pin_count)) {
wake_up_all(&pb->pb_waiters);
......@@ -1086,7 +1086,7 @@ pagebuf_unpin(
int
pagebuf_ispin(
page_buf_t *pb)
xfs_buf_t *pb)
{
return atomic_read(&pb->pb_pin_count);
}
......@@ -1100,7 +1100,7 @@ pagebuf_ispin(
*/
static inline void
_pagebuf_wait_unpin(
page_buf_t *pb)
xfs_buf_t *pb)
{
DECLARE_WAITQUEUE (wait, current);
......@@ -1135,7 +1135,7 @@ void
pagebuf_iodone_work(
void *v)
{
page_buf_t *pb = (page_buf_t *)v;
xfs_buf_t *pb = (xfs_buf_t *)v;
if (pb->pb_iodone) {
(*(pb->pb_iodone)) (pb);
......@@ -1151,7 +1151,7 @@ pagebuf_iodone_work(
void
pagebuf_iodone(
page_buf_t *pb,
xfs_buf_t *pb,
int dataio,
int schedule)
{
......@@ -1182,7 +1182,7 @@ pagebuf_iodone(
*/
void
pagebuf_ioerror( /* mark/clear buffer error flag */
page_buf_t *pb, /* buffer to mark */
xfs_buf_t *pb, /* buffer to mark */
unsigned int error) /* error to store (0 if none) */
{
pb->pb_error = error;
......@@ -1203,7 +1203,7 @@ pagebuf_ioerror( /* mark/clear buffer error flag */
*/
int
pagebuf_iostart( /* start I/O on a buffer */
page_buf_t *pb, /* buffer to start */
xfs_buf_t *pb, /* buffer to start */
page_buf_flags_t flags) /* PBF_LOCK, PBF_ASYNC, PBF_READ, */
/* PBF_WRITE, PBF_DELWRI, */
/* PBF_DONT_BLOCK */
......@@ -1224,7 +1224,7 @@ pagebuf_iostart( /* start I/O on a buffer */
pb->pb_flags |= flags & (PBF_READ | PBF_WRITE | PBF_ASYNC | \
PBF_READ_AHEAD | PBF_RUN_QUEUES);
BUG_ON(pb->pb_bn == PAGE_BUF_DADDR_NULL);
BUG_ON(pb->pb_bn == XFS_BUF_DADDR_NULL);
/* For writes allow an alternate strategy routine to precede
* the actual I/O request (which may not be issued at all in
......@@ -1250,7 +1250,7 @@ pagebuf_iostart( /* start I/O on a buffer */
STATIC __inline__ int
_pagebuf_iolocked(
page_buf_t *pb)
xfs_buf_t *pb)
{
ASSERT(pb->pb_flags & (PBF_READ|PBF_WRITE));
if (pb->pb_flags & PBF_READ)
......@@ -1260,7 +1260,7 @@ _pagebuf_iolocked(
STATIC __inline__ void
_pagebuf_iodone(
page_buf_t *pb,
xfs_buf_t *pb,
int schedule)
{
if (atomic_dec_and_test(&pb->pb_io_remaining) == 1) {
......@@ -1275,7 +1275,7 @@ bio_end_io_pagebuf(
unsigned int bytes_done,
int error)
{
page_buf_t *pb = (page_buf_t *)bio->bi_private;
xfs_buf_t *pb = (xfs_buf_t *)bio->bi_private;
unsigned int i, blocksize = pb->pb_target->pbr_bsize;
unsigned int sectorshift = pb->pb_target->pbr_sshift;
struct bio_vec *bvec = bio->bi_io_vec;
......@@ -1316,7 +1316,7 @@ bio_end_io_pagebuf(
void
_pagebuf_ioapply(
page_buf_t *pb)
xfs_buf_t *pb)
{
int i, map_i, total_nr_pages, nr_pages;
struct bio *bio;
......@@ -1435,7 +1435,7 @@ _pagebuf_ioapply(
*/
int
pagebuf_iorequest( /* start real I/O */
page_buf_t *pb) /* buffer to convey to device */
xfs_buf_t *pb) /* buffer to convey to device */
{
PB_TRACE(pb, "iorequest", 0);
......@@ -1471,7 +1471,7 @@ pagebuf_iorequest( /* start real I/O */
*/
int
pagebuf_iowait(
page_buf_t *pb)
xfs_buf_t *pb)
{
PB_TRACE(pb, "iowait", 0);
if (atomic_read(&pb->pb_io_remaining))
......@@ -1483,7 +1483,7 @@ pagebuf_iowait(
STATIC void *
pagebuf_mapout_locked(
page_buf_t *pb)
xfs_buf_t *pb)
{
void *old_addr = NULL;
......@@ -1502,7 +1502,7 @@ pagebuf_mapout_locked(
caddr_t
pagebuf_offset(
page_buf_t *pb,
xfs_buf_t *pb,
size_t offset)
{
struct page *page;
......@@ -1520,7 +1520,7 @@ pagebuf_offset(
*/
void
pagebuf_iomove(
page_buf_t *pb, /* buffer to process */
xfs_buf_t *pb, /* buffer to process */
size_t boff, /* starting buffer offset */
size_t bsize, /* length to copy */
caddr_t data, /* data address */
......@@ -1564,7 +1564,7 @@ STATIC spinlock_t pbd_delwrite_lock = SPIN_LOCK_UNLOCKED;
STATIC void
pagebuf_delwri_queue(
page_buf_t *pb,
xfs_buf_t *pb,
int unlock)
{
PB_TRACE(pb, "delwri_q", (long)unlock);
......@@ -1587,7 +1587,7 @@ pagebuf_delwri_queue(
void
pagebuf_delwri_dequeue(
page_buf_t *pb)
xfs_buf_t *pb)
{
PB_TRACE(pb, "delwri_uq", 0);
spin_lock(&pbd_delwrite_lock);
......@@ -1621,7 +1621,7 @@ STATIC int
pagebuf_daemon(
void *data)
{
page_buf_t *pb;
xfs_buf_t *pb;
struct list_head *curr, *next, tmp;
/* Set up the thread */
......@@ -1644,7 +1644,7 @@ pagebuf_daemon(
spin_lock(&pbd_delwrite_lock);
list_for_each_safe(curr, next, &pbd_delwrite_queue) {
pb = list_entry(curr, page_buf_t, pb_list);
pb = list_entry(curr, xfs_buf_t, pb_list);
PB_TRACE(pb, "walkq1", (long)pagebuf_ispin(pb));
......@@ -1664,7 +1664,7 @@ pagebuf_daemon(
spin_unlock(&pbd_delwrite_lock);
while (!list_empty(&tmp)) {
pb = list_entry(tmp.next, page_buf_t, pb_list);
pb = list_entry(tmp.next, xfs_buf_t, pb_list);
list_del_init(&pb->pb_list);
pagebuf_iostrategy(pb);
......@@ -1682,11 +1682,11 @@ pagebuf_daemon(
void
pagebuf_delwri_flush(
pb_target_t *target,
xfs_buftarg_t *target,
u_long flags,
int *pinptr)
{
page_buf_t *pb;
xfs_buf_t *pb;
struct list_head *curr, *next, tmp;
int pincount = 0;
......@@ -1697,7 +1697,7 @@ pagebuf_delwri_flush(
INIT_LIST_HEAD(&tmp);
list_for_each_safe(curr, next, &pbd_delwrite_queue) {
pb = list_entry(curr, page_buf_t, pb_list);
pb = list_entry(curr, xfs_buf_t, pb_list);
/*
* Skip other targets, markers and in progress buffers
......@@ -1723,7 +1723,7 @@ pagebuf_delwri_flush(
spin_unlock(&pbd_delwrite_lock);
list_for_each_safe(curr, next, &tmp) {
pb = list_entry(curr, page_buf_t, pb_list);
pb = list_entry(curr, xfs_buf_t, pb_list);
if (flags & PBDF_WAIT)
pb->pb_flags &= ~PBF_ASYNC;
......@@ -1735,7 +1735,7 @@ pagebuf_delwri_flush(
}
while (!list_empty(&tmp)) {
pb = list_entry(tmp.next, page_buf_t, pb_list);
pb = list_entry(tmp.next, xfs_buf_t, pb_list);
list_del_init(&pb->pb_list);
pagebuf_iowait(pb);
......@@ -1800,7 +1800,7 @@ pagebuf_init(void)
{
int i;
pagebuf_cache = kmem_cache_create("page_buf_t", sizeof(page_buf_t), 0,
pagebuf_cache = kmem_cache_create("xfs_buf_t", sizeof(xfs_buf_t), 0,
SLAB_HWCACHE_ALIGN, NULL, NULL);
if (pagebuf_cache == NULL) {
printk("pagebuf: couldn't init pagebuf cache\n");
......
fs/xfs/linux/xfs_buf.h
View file @ 1463079f
......@@ -51,10 +51,7 @@
* Base types
*/
/* daddr must be signed since -1 is used for bmaps that are not yet allocated */
typedef loff_t page_buf_daddr_t;
#define PAGE_BUF_DADDR_NULL ((page_buf_daddr_t) (-1LL))
#define XFS_BUF_DADDR_NULL ((xfs_daddr_t) (-1LL))
#define page_buf_ctob(pp) ((pp) * PAGE_CACHE_SIZE)
#define page_buf_btoc(dd) (((dd) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT)
......@@ -103,17 +100,17 @@ typedef enum page_buf_flags_e { /* pb_flags values */
#define PBF_NOT_DONE(pb) (((pb)->pb_flags & (PBF_PARTIAL|PBF_NONE)) != 0)
#define PBF_DONE(pb) (((pb)->pb_flags & (PBF_PARTIAL|PBF_NONE)) == 0)
typedef struct pb_target {
typedef struct xfs_buftarg {
dev_t pbr_dev;
struct block_device *pbr_bdev;
struct address_space *pbr_mapping;
unsigned int pbr_bsize;
unsigned int pbr_sshift;
size_t pbr_smask;
} pb_target_t;
} xfs_buftarg_t;
/*
* page_buf_t: Buffer structure for page cache-based buffers
* xfs_buf_t: Buffer structure for page cache-based buffers
*
* This buffer structure is used by the page cache buffer management routines
* to refer to an assembly of pages forming a logical buffer. The actual
......@@ -128,16 +125,16 @@ typedef struct pb_target {
* to indicate which disk blocks in the page are not valid.
*/
struct page_buf_s;
typedef void (*page_buf_iodone_t)(struct page_buf_s *);
struct xfs_buf;
typedef void (*page_buf_iodone_t)(struct xfs_buf *);
/* call-back function on I/O completion */
typedef void (*page_buf_relse_t)(struct page_buf_s *);
typedef void (*page_buf_relse_t)(struct xfs_buf *);
/* call-back function on I/O completion */
typedef int (*page_buf_bdstrat_t)(struct page_buf_s *);
typedef int (*page_buf_bdstrat_t)(struct xfs_buf *);
#define PB_PAGES 4
typedef struct page_buf_s {
typedef struct xfs_buf {
struct semaphore pb_sema; /* semaphore for lockables */
unsigned long pb_flushtime; /* time to flush pagebuf */
atomic_t pb_pin_count; /* pin count */
......@@ -145,9 +142,9 @@ typedef struct page_buf_s {
struct list_head pb_list;
page_buf_flags_t pb_flags; /* status flags */
struct list_head pb_hash_list;
struct pb_target *pb_target; /* logical object */
xfs_buftarg_t *pb_target; /* logical object */
atomic_t pb_hold; /* reference count */
page_buf_daddr_t pb_bn; /* block number for I/O */
xfs_daddr_t pb_bn; /* block number for I/O */
loff_t pb_file_offset; /* offset in file */
size_t pb_buffer_length; /* size of buffer in bytes */
size_t pb_count_desired; /* desired transfer size */
......@@ -171,52 +168,52 @@ typedef struct page_buf_s {
#ifdef PAGEBUF_LOCK_TRACKING
int pb_last_holder;
#endif
} page_buf_t;
} xfs_buf_t;
/* Finding and Reading Buffers */
extern page_buf_t *pagebuf_find( /* find buffer for block if */
extern xfs_buf_t *pagebuf_find( /* find buffer for block if */
/* the block is in memory */
struct pb_target *, /* inode for block */
xfs_buftarg_t *, /* inode for block */
loff_t, /* starting offset of range */
size_t, /* length of range */
page_buf_flags_t); /* PBF_LOCK */
extern page_buf_t *pagebuf_get( /* allocate a buffer */
struct pb_target *, /* inode for buffer */
extern xfs_buf_t *pagebuf_get( /* allocate a buffer */
xfs_buftarg_t *, /* inode for buffer */
loff_t, /* starting offset of range */
size_t, /* length of range */
page_buf_flags_t); /* PBF_LOCK, PBF_READ, */
/* PBF_ASYNC */
extern page_buf_t *pagebuf_lookup(
struct pb_target *,
extern xfs_buf_t *pagebuf_lookup(
xfs_buftarg_t *,
loff_t, /* starting offset of range */
size_t, /* length of range */
page_buf_flags_t); /* PBF_READ, PBF_WRITE, */
/* PBF_FORCEIO, */
extern page_buf_t *pagebuf_get_empty( /* allocate pagebuf struct with */
extern xfs_buf_t *pagebuf_get_empty( /* allocate pagebuf struct with */
/* no memory or disk address */
size_t len,
struct pb_target *); /* mount point "fake" inode */
xfs_buftarg_t *); /* mount point "fake" inode */
extern page_buf_t *pagebuf_get_no_daddr(/* allocate pagebuf struct */
extern xfs_buf_t *pagebuf_get_no_daddr(/* allocate pagebuf struct */
/* without disk address */
size_t len,
struct pb_target *); /* mount point "fake" inode */
xfs_buftarg_t *); /* mount point "fake" inode */
extern int pagebuf_associate_memory(
page_buf_t *,
xfs_buf_t *,
void *,
size_t);
extern void pagebuf_hold( /* increment reference count */
page_buf_t *); /* buffer to hold */
xfs_buf_t *); /* buffer to hold */
extern void pagebuf_readahead( /* read ahead into cache */
struct pb_target *, /* target for buffer (or NULL) */
xfs_buftarg_t *, /* target for buffer (or NULL) */
loff_t, /* starting offset of range */
size_t, /* length of range */
page_buf_flags_t); /* additional read flags */
......@@ -224,63 +221,63 @@ extern void pagebuf_readahead( /* read ahead into cache */
/* Releasing Buffers */
extern void pagebuf_free( /* deallocate a buffer */
page_buf_t *); /* buffer to deallocate */
xfs_buf_t *); /* buffer to deallocate */
extern void pagebuf_rele( /* release hold on a buffer */
page_buf_t *); /* buffer to release */
xfs_buf_t *); /* buffer to release */
/* Locking and Unlocking Buffers */
extern int pagebuf_cond_lock( /* lock buffer, if not locked */
/* (returns -EBUSY if locked) */
page_buf_t *); /* buffer to lock */
xfs_buf_t *); /* buffer to lock */
extern int pagebuf_lock_value( /* return count on lock */
page_buf_t *); /* buffer to check */
xfs_buf_t *); /* buffer to check */
extern int pagebuf_lock( /* lock buffer */
page_buf_t *); /* buffer to lock */
xfs_buf_t *); /* buffer to lock */
extern void pagebuf_unlock( /* unlock buffer */
page_buf_t *); /* buffer to unlock */
xfs_buf_t *); /* buffer to unlock */
/* Buffer Read and Write Routines */
extern void pagebuf_iodone( /* mark buffer I/O complete */
page_buf_t *, /* buffer to mark */
xfs_buf_t *, /* buffer to mark */
int, /* use data/log helper thread. */
int); /* run completion locally, or in
* a helper thread. */
extern void pagebuf_ioerror( /* mark buffer in error (or not) */
page_buf_t *, /* buffer to mark */
xfs_buf_t *, /* buffer to mark */
unsigned int); /* error to store (0 if none) */
extern int pagebuf_iostart( /* start I/O on a buffer */
page_buf_t *, /* buffer to start */
xfs_buf_t *, /* buffer to start */
page_buf_flags_t); /* PBF_LOCK, PBF_ASYNC, */
/* PBF_READ, PBF_WRITE, */
/* PBF_DELWRI */
extern int pagebuf_iorequest( /* start real I/O */
page_buf_t *); /* buffer to convey to device */
xfs_buf_t *); /* buffer to convey to device */
extern int pagebuf_iowait( /* wait for buffer I/O done */
page_buf_t *); /* buffer to wait on */
xfs_buf_t *); /* buffer to wait on */
extern void pagebuf_iomove( /* move data in/out of pagebuf */
page_buf_t *, /* buffer to manipulate */
xfs_buf_t *, /* buffer to manipulate */
size_t, /* starting buffer offset */
size_t, /* length in buffer */
caddr_t, /* data pointer */
page_buf_rw_t); /* direction */
static inline int pagebuf_iostrategy(page_buf_t *pb)
static inline int pagebuf_iostrategy(xfs_buf_t *pb)
{
return pb->pb_strat ? pb->pb_strat(pb) : pagebuf_iorequest(pb);
}
static inline int pagebuf_geterror(page_buf_t *pb)
static inline int pagebuf_geterror(xfs_buf_t *pb)
{
return pb ? pb->pb_error : ENOMEM;
}
......@@ -288,30 +285,30 @@ static inline int pagebuf_geterror(page_buf_t *pb)
/* Buffer Utility Routines */
extern caddr_t pagebuf_offset( /* pointer at offset in buffer */
page_buf_t *, /* buffer to offset into */
xfs_buf_t *, /* buffer to offset into */
size_t); /* offset */
/* Pinning Buffer Storage in Memory */
extern void pagebuf_pin( /* pin buffer in memory */
page_buf_t *); /* buffer to pin */
xfs_buf_t *); /* buffer to pin */
extern void pagebuf_unpin( /* unpin buffered data */
page_buf_t *); /* buffer to unpin */
xfs_buf_t *); /* buffer to unpin */
extern int pagebuf_ispin( /* check if buffer is pinned */
page_buf_t *); /* buffer to check */
xfs_buf_t *); /* buffer to check */
/* Delayed Write Buffer Routines */
#define PBDF_WAIT 0x01
extern void pagebuf_delwri_flush(
pb_target_t *,
xfs_buftarg_t *,
unsigned long,
int *);
extern void pagebuf_delwri_dequeue(
page_buf_t *);
xfs_buf_t *);
/* Buffer Daemon Setup Routines */
......@@ -322,7 +319,7 @@ extern void pagebuf_terminate(void);
#ifdef PAGEBUF_TRACE
extern ktrace_t *pagebuf_trace_buf;
extern void pagebuf_trace(
page_buf_t *, /* buffer being traced */
xfs_buf_t *, /* buffer being traced */
char *, /* description of operation */
void *, /* arbitrary diagnostic value */
void *); /* return address */
......@@ -369,7 +366,7 @@ extern void pagebuf_trace(
#define XFS_BUF_MANAGE PBF_FS_MANAGED
#define XFS_BUF_UNMANAGE(x) ((x)->pb_flags &= ~PBF_FS_MANAGED)
static inline void xfs_buf_undelay(page_buf_t *pb)
static inline void xfs_buf_undelay(xfs_buf_t *pb)
{
if (pb->pb_flags & PBF_DELWRI) {
if (pb->pb_list.next != &pb->pb_list) {
......@@ -423,12 +420,6 @@ static inline void xfs_buf_undelay(page_buf_t *pb)
#define XFS_BUF_BP_ISMAPPED(bp) 1
typedef struct page_buf_s xfs_buf_t;
#define xfs_buf page_buf_s
typedef struct pb_target xfs_buftarg_t;
#define xfs_buftarg pb_target
#define XFS_BUF_DATAIO(x) ((x)->pb_flags |= PBF_FS_DATAIOD)
#define XFS_BUF_UNDATAIO(x) ((x)->pb_flags &= ~PBF_FS_DATAIOD)
......@@ -461,7 +452,7 @@ typedef struct pb_target xfs_buftarg_t;
#define XFS_BUF_PTR(bp) (xfs_caddr_t)((bp)->pb_addr)
extern inline xfs_caddr_t xfs_buf_offset(page_buf_t *bp, size_t offset)
extern inline xfs_caddr_t xfs_buf_offset(xfs_buf_t *bp, size_t offset)
{
if (bp->pb_flags & PBF_MAPPED)
return XFS_BUF_PTR(bp) + offset;
......@@ -472,7 +463,7 @@ extern inline xfs_caddr_t xfs_buf_offset(page_buf_t *bp, size_t offset)
pagebuf_associate_memory(bp, val, count)
#define XFS_BUF_ADDR(bp) ((bp)->pb_bn)
#define XFS_BUF_SET_ADDR(bp, blk) \
((bp)->pb_bn = (page_buf_daddr_t)(blk))
((bp)->pb_bn = (blk))
#define XFS_BUF_OFFSET(bp) ((bp)->pb_file_offset)
#define XFS_BUF_SET_OFFSET(bp, off) \
((bp)->pb_file_offset = (off))
......@@ -517,7 +508,7 @@ extern inline xfs_caddr_t xfs_buf_offset(page_buf_t *bp, size_t offset)
#define xfs_buf_get_flags(target, blkno, len, flags) \
pagebuf_get((target), (blkno), (len), (flags))
static inline int xfs_bawrite(void *mp, page_buf_t *bp)
static inline int xfs_bawrite(void *mp, xfs_buf_t *bp)
{
bp->pb_fspriv3 = mp;
bp->pb_strat = xfs_bdstrat_cb;
......@@ -525,7 +516,7 @@ static inline int xfs_bawrite(void *mp, page_buf_t *bp)
return pagebuf_iostart(bp, PBF_WRITE | PBF_ASYNC | PBF_RUN_QUEUES);
}
static inline void xfs_buf_relse(page_buf_t *bp)
static inline void xfs_buf_relse(xfs_buf_t *bp)
{
if (!bp->pb_relse)
pagebuf_unlock(bp);
......@@ -553,7 +544,7 @@ static inline void xfs_buf_relse(page_buf_t *bp)
pagebuf_iomove((pb), (off), (len), NULL, PBRW_ZERO)
static inline int XFS_bwrite(page_buf_t *pb)
static inline int XFS_bwrite(xfs_buf_t *pb)
{
int iowait = (pb->pb_flags & PBF_ASYNC) == 0;
int error = 0;
......@@ -573,7 +564,7 @@ static inline int XFS_bwrite(page_buf_t *pb)
#define XFS_bdwrite(pb) \
pagebuf_iostart(pb, PBF_DELWRI | PBF_ASYNC)
static inline int xfs_bdwrite(void *mp, page_buf_t *bp)
static inline int xfs_bdwrite(void *mp, xfs_buf_t *bp)
{
bp->pb_strat = xfs_bdstrat_cb;
bp->pb_fspriv3 = mp;
......
fs/xfs/linux/xfs_ioctl.c
View file @ 1463079f
......@@ -659,7 +659,7 @@ xfs_ioctl(
case XFS_IOC_DIOINFO: {
struct dioattr da;
pb_target_t *target =
xfs_buftarg_t *target =
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
......
fs/xfs/linux/xfs_lrw.c
View file @ 1463079f
......@@ -301,7 +301,7 @@ xfs_read(
/* END copy & waste from filemap.c */
if (ioflags & IO_ISDIRECT) {
pb_target_t *target =
xfs_buftarg_t *target =
(ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
if ((*offset & target->pbr_smask) ||
......@@ -689,7 +689,7 @@ xfs_write(
}
if (ioflags & IO_ISDIRECT) {
pb_target_t *target =
xfs_buftarg_t *target =
(xip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
mp->m_rtdev_targp : mp->m_ddev_targp;
......
fs/xfs/linux/xfs_lrw.h
View file @ 1463079f
......@@ -38,7 +38,7 @@ struct xfs_mount;
struct xfs_iocore;
struct xfs_inode;
struct xfs_bmbt_irec;
struct page_buf_s;
struct xfs_buf;
struct xfs_iomap;
#if defined(XFS_RW_TRACE)
......@@ -89,8 +89,8 @@ extern void xfs_inval_cached_trace(struct xfs_iocore *,
extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int,
struct xfs_iomap *, int *);
extern int xfsbdstrat(struct xfs_mount *, struct page_buf_s *);
extern int xfs_bdstrat_cb(struct page_buf_s *);
extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
extern int xfs_bdstrat_cb(struct xfs_buf *);
extern int xfs_zero_eof(struct vnode *, struct xfs_iocore *, xfs_off_t,
xfs_fsize_t, xfs_fsize_t);
......
fs/xfs/linux/xfs_super.h
View file @ 1463079f
......@@ -112,7 +112,7 @@ extern void xfs_qm_exit(void);
struct xfs_inode;
struct xfs_mount;
struct pb_target;
struct xfs_buftarg;
struct block_device;
extern __uint64_t xfs_max_file_offset(unsigned int);
......@@ -126,12 +126,12 @@ extern int xfs_blkdev_get(struct xfs_mount *, const char *,
struct block_device **);
extern void xfs_blkdev_put(struct block_device *);
extern struct pb_target *xfs_alloc_buftarg(struct block_device *);
extern void xfs_relse_buftarg(struct pb_target *);
extern void xfs_free_buftarg(struct pb_target *);
extern void xfs_flush_buftarg(struct pb_target *);
extern int xfs_readonly_buftarg(struct pb_target *);
extern void xfs_setsize_buftarg(struct pb_target *, unsigned int, unsigned int);
extern unsigned int xfs_getsize_buftarg(struct pb_target *);
extern struct xfs_buftarg *xfs_alloc_buftarg(struct block_device *);
extern void xfs_relse_buftarg(struct xfs_buftarg *);
extern void xfs_free_buftarg(struct xfs_buftarg *);
extern void xfs_flush_buftarg(struct xfs_buftarg *);
extern int xfs_readonly_buftarg(struct xfs_buftarg *);
extern void xfs_setsize_buftarg(struct xfs_buftarg *, unsigned int, unsigned int);
extern unsigned int xfs_getsize_buftarg(struct xfs_buftarg *);
#endif /* __XFS_SUPER_H__ */
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