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Commit fdba8dd2 authored by Christoph Hellwig's avatar Christoph Hellwig
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parents 463b2b8d 919dc9e2
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Showing with 508 additions and 734 deletions
fs/xfs/linux/xfs_aops.c
View file @ fdba8dd2
......@@ -37,10 +37,38 @@
#include <linux/iobuf.h>
STATIC int linvfs_pb_bmap(struct inode *, loff_t, ssize_t,
struct page_buf_bmap_s *, int);
STATIC int delalloc_convert(struct inode *, struct page *, int, int);
STATIC int
map_blocks(
struct inode *inode,
loff_t offset,
ssize_t count,
page_buf_bmap_t *pbmapp,
int flags)
{
vnode_t *vp = LINVFS_GET_VP(inode);
int error, nmaps = 1;
retry:
if (flags & PBF_FILE_ALLOCATE) {
VOP_STRATEGY(vp, offset, count, flags, NULL,
pbmapp, &nmaps, error);
} else {
VOP_BMAP(vp, offset, count, flags, NULL,
pbmapp, &nmaps, error);
}
if (flags & PBF_WRITE) {
if (unlikely((flags & PBF_DIRECT) && nmaps &&
(pbmapp->pbm_flags & PBMF_DELAY))) {
flags = PBF_WRITE | PBF_FILE_ALLOCATE;
goto retry;
}
VMODIFY(vp);
}
return -error;
}
/*
* match_offset_to_mapping
* Finds the corresponding mapping in block @map array of the
......@@ -195,7 +223,7 @@ probe_unmapped_page(
page = find_get_page(mapping, index);
if (!page)
return 0;
if (TestSetPageLocked(page)) {
if (PageWriteback(page) || TestSetPageLocked(page)) {
page_cache_release(page);
return 0;
}
......@@ -274,7 +302,7 @@ probe_page(
page = find_get_page(inode->i_mapping, index);
if (!page)
return NULL;
if (TestSetPageLocked(page)) {
if (PageWriteback(page) || TestSetPageLocked(page)) {
page_cache_release(page);
return NULL;
}
......@@ -303,6 +331,7 @@ submit_page(
BUG_ON(PageWriteback(page));
SetPageWriteback(page);
clear_page_dirty(page);
unlock_page(page);
if (cnt) {
......@@ -461,7 +490,7 @@ delalloc_convert(
if (buffer_delay(bh)) {
if (!mp) {
err = linvfs_pb_bmap(inode, offset, len, &map,
err = map_blocks(inode, offset, len, &map,
PBF_WRITE|PBF_FILE_ALLOCATE);
if (err)
goto error;
......@@ -487,7 +516,7 @@ delalloc_convert(
if (!mp) {
size = probe_unmapped_cluster(inode, page,
bh, head);
err = linvfs_pb_bmap(inode, offset, size, &map,
err = map_blocks(inode, offset, size, &map,
PBF_WRITE|PBF_DIRECT);
if (err)
goto error;
......@@ -661,36 +690,6 @@ linvfs_direct_IO(
linvfs_get_blocks_direct);
}
STATIC int
linvfs_pb_bmap(
struct inode *inode,
loff_t offset,
ssize_t count,
page_buf_bmap_t *pbmapp,
int flags)
{
vnode_t *vp = LINVFS_GET_VP(inode);
int error, nmaps = 1;
retry:
if (flags & PBF_FILE_ALLOCATE) {
VOP_STRATEGY(vp, offset, count, flags, NULL,
pbmapp, &nmaps, error);
} else {
VOP_BMAP(vp, offset, count, flags, NULL,
pbmapp, &nmaps, error);
}
if (flags & PBF_WRITE) {
if (unlikely((flags & PBF_DIRECT) && nmaps &&
(pbmapp->pbm_flags & PBMF_DELAY))) {
flags = PBF_WRITE | PBF_FILE_ALLOCATE;
goto retry;
}
VMODIFY(vp);
}
return -error;
}
STATIC int
linvfs_bmap(
struct address_space *mapping,
......@@ -714,11 +713,11 @@ linvfs_bmap(
}
STATIC int
linvfs_read_full_page(
linvfs_readpage(
struct file *unused,
struct page *page)
{
return block_read_full_page(page, linvfs_get_block);
return mpage_readpage(page, linvfs_get_block);
}
STATIC int
......@@ -759,7 +758,7 @@ count_page_state(
}
STATIC int
linvfs_write_full_page(
linvfs_writepage(
struct page *page)
{
int error;
......@@ -801,118 +800,6 @@ linvfs_prepare_write(
}
}
#if 0
/* Keeping this for now as an example of a better way of
* doing O_DIRECT for XFS - the generic path has more
* overhead than we want.
*/
/*
* Initiate I/O on a kiobuf of user memory
*/
STATIC int
linvfs_direct_IO(
int rw,
struct inode *inode,
struct kiobuf *iobuf,
unsigned long blocknr,
int blocksize)
{
struct page **maplist;
size_t page_offset;
page_buf_t *pb;
page_buf_bmap_t map;
int error = 0;
int pb_flags, map_flags, pg_index = 0;
size_t length, total;
loff_t offset;
size_t map_size, size;
total = length = iobuf->length;
offset = blocknr;
offset <<= inode->i_blkbits;
maplist = iobuf->maplist;
page_offset = iobuf->offset;
map_flags = (rw ? PBF_WRITE : PBF_READ) | PBF_DIRECT;
pb_flags = (rw ? PBF_WRITE : PBF_READ) | PBF_FORCEIO | _PBF_LOCKABLE;
while (length) {
error = linvfs_pb_bmap(inode, offset, length, &map, map_flags);
if (error)
break;
map_size = map.pbm_bsize - map.pbm_delta;
size = min(map_size, length);
if (map.pbm_flags & PBMF_HOLE) {
size_t zero_len = size;
if (rw == WRITE)
break;
/* Need to zero it all */
while (zero_len) {
struct page *page;
size_t pg_len;
pg_len = min((size_t)
(PAGE_CACHE_SIZE - page_offset),
zero_len);
page = maplist[pg_index];
memset(kmap(page) + page_offset, 0, pg_len);
flush_dcache_page(page);
kunmap(page);
zero_len -= pg_len;
if ((pg_len + page_offset) == PAGE_CACHE_SIZE) {
pg_index++;
page_offset = 0;
} else {
page_offset = (page_offset + pg_len) &
~PAGE_CACHE_MASK;
}
}
} else {
int pg_count;
pg_count = (size + page_offset + PAGE_CACHE_SIZE - 1)
>> PAGE_CACHE_SHIFT;
if ((pb = pagebuf_lookup(map.pbm_target, inode, offset,
size, pb_flags)) == NULL) {
error = -ENOMEM;
break;
}
/* Need to hook up pagebuf to kiobuf pages */
pb->pb_pages = &maplist[pg_index];
pb->pb_offset = page_offset;
pb->pb_page_count = pg_count;
pb->pb_bn = map.pbm_bn + (map.pbm_delta >> 9);
error = pagebuf_iostart(pb, pb_flags);
pb->pb_flags &= ~_PBF_LOCKABLE;
pagebuf_rele(pb);
if (error != 0) {
if (error > 0)
error = -error;
break;
}
page_offset = (page_offset + size) & ~PAGE_CACHE_MASK;
if (page_offset)
pg_count--;
pg_index += pg_count;
}
offset += size;
length -= size;
}
return (error ? error : (int)(total - length));
}
#endif
/*
* This gets a page into cleanable state - page locked on entry
* kept locked on exit. If the page is marked dirty we should
......@@ -945,9 +832,9 @@ linvfs_release_page(
struct address_space_operations linvfs_aops = {
.readpage = linvfs_read_full_page,
.readpage = linvfs_readpage,
.readpages = linvfs_readpages,
.writepage = linvfs_write_full_page,
.writepage = linvfs_writepage,
.sync_page = block_sync_page,
.releasepage = linvfs_release_page,
.prepare_write = linvfs_prepare_write,
......
fs/xfs/linux/xfs_file.c
View file @ fdba8dd2
......@@ -40,70 +40,76 @@ static struct vm_operations_struct linvfs_file_vm_ops;
STATIC ssize_t
linvfs_read(
struct file *filp,
char *buf,
size_t size,
loff_t *offset)
linvfs_readv(
struct file *filp,
const struct iovec *iovp,
unsigned long nr_segs,
loff_t *ppos)
{
vnode_t *vp;
int error;
vnode_t *vp = LINVFS_GET_VP(filp->f_dentry->d_inode);
int error;
vp = LINVFS_GET_VP(filp->f_dentry->d_inode);
ASSERT(vp);
VOP_READ(vp, filp, iovp, nr_segs, ppos, NULL, error);
VOP_READ(vp, filp, buf, size, offset, NULL, error);
return(error);
return error;
}
STATIC ssize_t
linvfs_write(
struct file *file,
const char *buf,
size_t count,
loff_t *ppos)
linvfs_writev(
struct file *filp,
const struct iovec *iovp,
unsigned long nr_segs,
loff_t *ppos)
{
struct inode *inode = file->f_dentry->d_inode;
loff_t pos;
vnode_t *vp;
int err; /* Use negative errors in this f'n */
if ((ssize_t) count < 0)
return -EINVAL;
if (!access_ok(VERIFY_READ, buf, count))
return -EFAULT;
struct inode *inode = filp->f_dentry->d_inode;
vnode_t *vp = LINVFS_GET_VP(inode);
int error = filp->f_error;
pos = *ppos;
err = -EINVAL;
if (pos < 0)
goto out;
err = file->f_error;
if (err) {
file->f_error = 0;
goto out;
if (unlikely(error)) {
filp->f_error = 0;
return error;
}
vp = LINVFS_GET_VP(inode);
ASSERT(vp);
/* We allow multiple direct writers in, there is no
/*
* We allow multiple direct writers in, there is no
* potential call to vmtruncate in that path.
*/
if (!(file->f_flags & O_DIRECT))
if (filp->f_flags & O_DIRECT) {
VOP_WRITE(vp, filp, iovp, nr_segs, ppos, NULL, error);
} else {
down(&inode->i_sem);
VOP_WRITE(vp, filp, iovp, nr_segs, ppos, NULL, error);
up(&inode->i_sem);
}
VOP_WRITE(vp, file, buf, count, &pos, NULL, err);
*ppos = pos;
return error;
}
if (!(file->f_flags & O_DIRECT))
up(&inode->i_sem);
out:
return(err);
STATIC ssize_t
linvfs_read(
struct file *filp,
char *buf,
size_t count,
loff_t *ppos)
{
struct iovec iov = {buf, count};
return linvfs_readv(filp, &iov, 1, ppos);
}
STATIC ssize_t
linvfs_write(
struct file *file,
const char *buf,
size_t count,
loff_t *ppos)
{
struct iovec iov = {(void *)buf, count};
return linvfs_writev(file, &iov, 1, ppos);
}
......@@ -312,6 +318,8 @@ struct file_operations linvfs_file_operations = {
.llseek = generic_file_llseek,
.read = linvfs_read,
.write = linvfs_write,
.readv = linvfs_readv,
.writev = linvfs_writev,
.ioctl = linvfs_ioctl,
.mmap = linvfs_file_mmap,
.open = linvfs_open,
......
fs/xfs/linux/xfs_lrw.c
View file @ fdba8dd2
......@@ -124,36 +124,64 @@ xfs_iozero(
ssize_t /* bytes read, or (-) error */
xfs_read(
bhv_desc_t *bdp,
struct file *file,
char *buf,
size_t size,
loff_t *offset,
cred_t *credp)
bhv_desc_t *bdp,
struct file *filp,
const struct iovec *iovp,
unsigned long segs,
loff_t *offp,
cred_t *credp)
{
ssize_t ret;
xfs_fsize_t n;
xfs_inode_t *ip;
xfs_mount_t *mp;
size_t size = 0;
ssize_t ret;
xfs_fsize_t n;
xfs_inode_t *ip;
xfs_mount_t *mp;
unsigned long seg;
int direct = filp->f_flags & O_DIRECT;
ip = XFS_BHVTOI(bdp);
mp = ip->i_mount;
XFS_STATS_INC(xfsstats.xs_read_calls);
if (file->f_flags & O_DIRECT) {
if (((__psint_t)buf & BBMASK) ||
(*offset & mp->m_blockmask) ||
/* START copy & waste from filemap.c */
for (seg = 0; seg < segs; seg++) {
const struct iovec *iv = &iovp[seg];
/*
* If any segment has a negative length, or the cumulative
* length ever wraps negative then return -EINVAL.
*/
size += iv->iov_len;
if (unlikely((ssize_t)(size|iv->iov_len) < 0))
return XFS_ERROR(-EINVAL);
if (direct) { /* XFS specific check */
if ((__psint_t)iv->iov_base & BBMASK) {
if (*offp == ip->i_d.di_size)
return 0;
return XFS_ERROR(-EINVAL);
}
}
if (access_ok(VERIFY_WRITE, iv->iov_base, iv->iov_len))
continue;
if (seg == 0)
return XFS_ERROR(-EFAULT);
segs = seg;
break;
}
/* END copy & waste from filemap.c */
if (direct) {
if ((*offp & mp->m_blockmask) ||
(size & mp->m_blockmask)) {
if (*offset == ip->i_d.di_size) {
if (*offp == ip->i_d.di_size) {
return (0);
}
return -XFS_ERROR(EINVAL);
}
}
n = XFS_MAX_FILE_OFFSET - *offset;
n = XFS_MAX_FILE_OFFSET - *offp;
if ((n <= 0) || (size == 0))
return 0;
......@@ -167,26 +195,24 @@ xfs_read(
xfs_ilock(ip, XFS_IOLOCK_SHARED);
if (DM_EVENT_ENABLED(BHV_TO_VNODE(bdp)->v_vfsp, ip, DM_EVENT_READ) &&
!(file->f_mode & FINVIS)) {
!(filp->f_mode & FINVIS)) {
int error;
vrwlock_t locktype = VRWLOCK_READ;
error = xfs_dm_send_data_event(DM_EVENT_READ, bdp,
*offset, size,
FILP_DELAY_FLAG(file),
&locktype);
error = xfs_dm_send_data_event(DM_EVENT_READ, bdp, *offp,
size, FILP_DELAY_FLAG(filp), &locktype);
if (error) {
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
return -error;
}
}
ret = generic_file_read(file, buf, size, offset);
ret = generic_file_readv(filp, iovp, segs, offp);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
XFS_STATS_ADD(xfsstats.xs_read_bytes, ret);
if (!(file->f_mode & FINVIS))
if (!(filp->f_mode & FINVIS))
xfs_ichgtime(ip, XFS_ICHGTIME_ACC);
return ret;
......@@ -418,32 +444,57 @@ xfs_zero_eof(
ssize_t /* bytes written, or (-) error */
xfs_write(
bhv_desc_t *bdp,
struct file *file,
const char *buf,
size_t size,
loff_t *offset,
cred_t *credp)
bhv_desc_t *bdp,
struct file *file,
const struct iovec *iovp,
unsigned long segs,
loff_t *offset,
cred_t *credp)
{
xfs_inode_t *xip;
xfs_mount_t *mp;
ssize_t ret;
int error = 0;
xfs_fsize_t isize, new_size;
xfs_fsize_t n, limit = XFS_MAX_FILE_OFFSET;
xfs_iocore_t *io;
vnode_t *vp;
struct iovec iov;
int iolock;
int direct = file->f_flags & O_DIRECT;
int eventsent = 0;
vrwlock_t locktype;
size_t size = 0;
xfs_inode_t *xip;
xfs_mount_t *mp;
ssize_t ret;
int error = 0;
xfs_fsize_t isize, new_size;
xfs_fsize_t n, limit = XFS_MAX_FILE_OFFSET;
xfs_iocore_t *io;
vnode_t *vp;
unsigned long seg;
int iolock;
int direct = file->f_flags & O_DIRECT;
int eventsent = 0;
vrwlock_t locktype;
XFS_STATS_INC(xfsstats.xs_write_calls);
vp = BHV_TO_VNODE(bdp);
xip = XFS_BHVTOI(bdp);
/* START copy & waste from filemap.c */
for (seg = 0; seg < segs; seg++) {
const struct iovec *iv = &iovp[seg];
/*
* If any segment has a negative length, or the cumulative
* length ever wraps negative then return -EINVAL.
*/
size += iv->iov_len;
if (unlikely((ssize_t)(size|iv->iov_len) < 0))
return XFS_ERROR(-EINVAL);
if (direct) { /* XFS specific check */
if ((__psint_t)iv->iov_base & BBMASK)
return XFS_ERROR(-EINVAL);
}
if (access_ok(VERIFY_READ, iv->iov_base, iv->iov_len))
continue;
if (seg == 0)
return XFS_ERROR(-EFAULT);
segs = seg;
break;
}
/* END copy & waste from filemap.c */
if (size == 0)
return 0;
......@@ -457,9 +508,8 @@ xfs_write(
}
if (direct) {
if (((__psint_t)buf & BBMASK) ||
(*offset & mp->m_blockmask) ||
(size & mp->m_blockmask)) {
if ((*offset & mp->m_blockmask) ||
(size & mp->m_blockmask)) {
return XFS_ERROR(-EINVAL);
}
iolock = XFS_IOLOCK_SHARED;
......@@ -481,6 +531,7 @@ xfs_write(
xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
return -EFBIG;
}
if (n < size)
size = n;
......@@ -572,10 +623,7 @@ xfs_write(
xfs_inval_cached_pages(vp, &xip->i_iocore, *offset, 1, 1);
}
iov.iov_base = (void *)buf;
iov.iov_len = size;
ret = generic_file_write_nolock(file, &iov, 1, offset);
ret = generic_file_write_nolock(file, iovp, segs, offset);
if ((ret == -ENOSPC) &&
DM_EVENT_ENABLED(vp->v_vfsp, xip, DM_EVENT_NOSPACE) &&
......
fs/xfs/linux/xfs_lrw.h
View file @ fdba8dd2
......@@ -47,19 +47,19 @@ extern int xfs_bdstrat_cb (struct xfs_buf *);
extern int xfs_zero_eof (vnode_t *, struct xfs_iocore *, xfs_off_t,
xfs_fsize_t, xfs_fsize_t, struct pm *);
extern ssize_t xfs_read (
struct bhv_desc *bdp,
struct file *file,
char *buf,
size_t size,
loff_t *offset,
struct cred *credp);
struct bhv_desc *bdp,
struct file *filp,
const struct iovec *iovp,
unsigned long segs,
loff_t *offp,
struct cred *credp);
extern ssize_t xfs_write (
struct bhv_desc *bdp,
struct file *file,
const char *buf,
size_t size,
loff_t *offset,
struct file *filp,
const struct iovec *iovp,
unsigned long segs,
loff_t *offp,
struct cred *credp);
extern int xfs_recover_read_only (xlog_t *);
......
fs/xfs/linux/xfs_vnode.h
View file @ fdba8dd2
......@@ -56,10 +56,8 @@ typedef __u64 vnumber_t;
/*
* MP locking protocols:
* v_flag, v_count VN_LOCK/VN_UNLOCK
* v_vfsp VN_LOCK/VN_UNLOCK
* v_flag, v_vfsp VN_LOCK/VN_UNLOCK
* v_type read-only or fs-dependent
* v_list, v_hashp, v_hashn freelist lock
*/
typedef struct vnode {
__u32 v_flag; /* vnode flags (see below) */
......@@ -70,9 +68,9 @@ typedef struct vnode {
spinlock_t v_lock; /* don't use VLOCK on Linux */
struct inode v_inode; /* linux inode */
#ifdef CONFIG_XFS_VNODE_TRACING
#ifdef CONFIG_XFS_VNODE_TRACING
struct ktrace *v_trace; /* trace header structure */
#endif /* CONFIG_XFS_VNODE_TRACING */
#endif
} vnode_t;
/*
......@@ -170,7 +168,6 @@ typedef enum vchange {
#define v_fops v_bh.bh_first->bd_ops /* ops for first behavior */
union rval;
struct uio;
struct file;
struct vattr;
......@@ -178,9 +175,11 @@ struct page_buf_bmap_s;
struct attrlist_cursor_kern;
typedef int (*vop_open_t)(bhv_desc_t *, struct cred *);
typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct file *, char *, size_t,
typedef ssize_t (*vop_read_t)(bhv_desc_t *, struct file *,
const struct iovec *, unsigned long,
loff_t *, struct cred *);
typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct file *, const char *, size_t,
typedef ssize_t (*vop_write_t)(bhv_desc_t *, struct file *,
const struct iovec *, unsigned long,
loff_t *, struct cred *);
typedef int (*vop_ioctl_t)(bhv_desc_t *, struct inode *, struct file *, unsigned int, unsigned long);
typedef int (*vop_getattr_t)(bhv_desc_t *, struct vattr *, int,
......@@ -275,21 +274,16 @@ typedef struct vnodeops {
*/
#define _VOP_(op, vp) (*((vnodeops_t *)(vp)->v_fops)->op)
/*
* Be careful with VOP_OPEN, since we're holding the chain lock on the
* original vnode and VOP_OPEN semantic allows the new vnode to be returned
* in vpp. The practice of passing &vp for vpp just doesn't work.
*/
#define VOP_READ(vp,file,buf,size,offset,cr,rv) \
#define VOP_READ(vp,file,iov,segs,offset,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,buf,size,offset,cr); \
rv = _VOP_(vop_read, vp)((vp)->v_fbhv,file,iov,segs,offset,cr); \
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_WRITE(vp,file,buf,size,offset,cr,rv) \
#define VOP_WRITE(vp,file,iov,segs,offset,cr,rv) \
{ \
VN_BHV_READ_LOCK(&(vp)->v_bh); \
rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,buf,size,offset,cr);\
rv = _VOP_(vop_write, vp)((vp)->v_fbhv,file,iov,segs,offset,cr);\
VN_BHV_READ_UNLOCK(&(vp)->v_bh); \
}
#define VOP_BMAP(vp,of,sz,rw,cr,b,n,rv) \
......
fs/xfs/pagebuf/page_buf.c
View file @ fdba8dd2
......@@ -55,11 +55,12 @@
#include <linux/vmalloc.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <asm/softirq.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include <support/debug.h>
#include <support/kmem.h>
#include "page_buf_internal.h"
#define SECTOR_SHIFT 9
......@@ -548,8 +549,8 @@ _pagebuf_lookup_pages(
} else if (!PagePrivate(page)) {
unsigned long i, range = (offset + nbytes) >> SECTOR_SHIFT;
assert(blocksize < PAGE_CACHE_SIZE);
assert(!(pb->pb_flags & _PBF_PRIVATE_BH));
ASSERT(blocksize < PAGE_CACHE_SIZE);
ASSERT(!(pb->pb_flags & _PBF_PRIVATE_BH));
/*
* In this case page->private holds a bitmap
* of uptodate sectors (512) within the page
......@@ -1317,8 +1318,8 @@ bio_end_io_pagebuf(
} else if (!PagePrivate(page)) {
unsigned int j, range;
assert(blocksize < PAGE_CACHE_SIZE);
assert(!(pb->pb_flags & _PBF_PRIVATE_BH));
ASSERT(blocksize < PAGE_CACHE_SIZE);
ASSERT(!(pb->pb_flags & _PBF_PRIVATE_BH));
range = (bvec->bv_offset + bvec->bv_len)>>SECTOR_SHIFT;
for (j = bvec->bv_offset>>SECTOR_SHIFT; j < range; j++)
......@@ -1607,7 +1608,7 @@ pagebuf_iomove(
while (cboff < boff) {
pagebuf_segment(pb, &cboff, &page, &cpoff, &csize);
assert(((csize + cpoff) <= PAGE_CACHE_SIZE));
ASSERT(((csize + cpoff) <= PAGE_CACHE_SIZE));
switch (mode) {
case PBRW_ZERO:
......
fs/xfs/pagebuf/page_buf.h
View file @ fdba8dd2
......@@ -378,13 +378,6 @@ extern int pagebuf_ispin( page_buf_t *); /* check if pagebuf is pinned */
/* Reading and writing pages */
extern int pagebuf_write_full_page( /* write a page via pagebuf */
struct page *, /* page to write */
int delalloc); /* delalloc bh present */
extern int pagebuf_release_page( /* Attempt to convert a delalloc page */
struct page *); /* page to release */
extern void pagebuf_delwri_queue(page_buf_t *, int);
extern void pagebuf_delwri_dequeue(page_buf_t *);
......
fs/xfs/pagebuf/page_buf_internal.h
View file @ fdba8dd2
......@@ -151,18 +151,6 @@ extern struct pbstats pbstats;
#define PB_STATS_INC(count) ( count ++ )
#undef assert
#ifdef PAGEBUF_DEBUG
# define assert(expr) \
if (!(expr)) { \
printk("Assertion failed: %s\n%s::%s line %d\n",\
#expr,__FILE__,__FUNCTION__,__LINE__); \
BUG(); \
}
#else
# define assert(x) do { } while (0)
#endif
#ifndef STATIC
# define STATIC static
#endif
......
fs/xfs/pagebuf/page_buf_locking.c
View file @ fdba8dd2
......@@ -54,6 +54,8 @@
#include <linux/init.h>
#include <linux/major.h>
#include <support/debug.h>
#include "page_buf_internal.h"
#ifndef EVMS_MAJOR
......@@ -76,7 +78,7 @@ pagebuf_cond_lock( /* lock buffer, if not locked */
{
int locked;
assert(pb->pb_flags & _PBF_LOCKABLE);
ASSERT(pb->pb_flags & _PBF_LOCKABLE);
locked = down_trylock(&PBP(pb)->pb_sema) == 0;
if (locked) {
......@@ -97,7 +99,7 @@ int
pagebuf_lock_value(
page_buf_t *pb)
{
assert(pb->pb_flags & _PBF_LOCKABLE);
ASSERT(pb->pb_flags & _PBF_LOCKABLE);
return(atomic_read(&PBP(pb)->pb_sema.count));
}
......@@ -113,7 +115,7 @@ int
pagebuf_lock(
page_buf_t *pb)
{
assert(pb->pb_flags & _PBF_LOCKABLE);
ASSERT(pb->pb_flags & _PBF_LOCKABLE);
PB_TRACE(pb, PB_TRACE_REC(lock), 0);
if (atomic_read(&PBP(pb)->pb_io_remaining))
......@@ -219,7 +221,7 @@ void
pagebuf_unlock( /* unlock buffer */
page_buf_t *pb) /* buffer to unlock */
{
assert(pb->pb_flags & _PBF_LOCKABLE);
ASSERT(pb->pb_flags & _PBF_LOCKABLE);
PB_CLEAR_OWNER(pb);
up(&PBP(pb)->pb_sema);
PB_TRACE(pb, PB_TRACE_REC(unlock), 0);
......
fs/xfs/support/time.h
View file @ fdba8dd2
......@@ -33,6 +33,7 @@
#define __XFS_SUPPORT_TIME_H__
#include <linux/sched.h>
#include <linux/time.h>
static inline void delay(long ticks)
{
......@@ -42,8 +43,11 @@ static inline void delay(long ticks)
static inline void nanotime(struct timespec *tvp)
{
tvp->tv_sec = xtime.tv_sec;
tvp->tv_nsec = xtime.tv_nsec;
struct timeval tv;
do_gettimeofday(&tv);
tvp->tv_sec = tv.tv_sec;
tvp->tv_nsec = tv.tv_usec * 1000;
}
#endif /* __XFS_SUPPORT_TIME_H__ */
fs/xfs/xfs_iget.c
View file @ fdba8dd2
......@@ -507,26 +507,6 @@ xfs_iget(
}
/*
* A 'special' interface to xfs_iget, where the
* vnode is already allocated.
*/
int
xfs_vn_iget(
vfs_t *vfsp,
struct vnode *vp,
xfs_ino_t ino)
{
xfs_inode_t *ip;
xfs_mount_t *mp = XFS_BHVTOM(vfsp->vfs_fbhv);
int error;
error = xfs_iget_core(vp, mp, NULL, ino, 0, &ip, 0);
return error;
}
/*
* Do the setup for the various locks within the incore inode.
*/
......
fs/xfs/xfs_inode.h
View file @ fdba8dd2
......@@ -490,7 +490,6 @@ xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
void xfs_inode_lock_init(xfs_inode_t *, struct vnode *);
int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
uint, xfs_inode_t **, xfs_daddr_t);
int xfs_vn_iget(vfs_t *, struct vnode *, xfs_ino_t);
void xfs_iput(xfs_inode_t *, uint);
void xfs_iput_new(xfs_inode_t *, uint);
void xfs_ilock(xfs_inode_t *, uint);
......
fs/xfs/xfs_mount.c
View file @ fdba8dd2
......@@ -788,16 +788,6 @@ xfs_mountfs(
}
}
/*
* Disallow mount attempts with (IRIX) project quota enabled
*/
if (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
(mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT)) {
cmn_err(CE_WARN, "XFS: IRIX project quota are enabled");
error = XFS_ERROR(ENOSYS);
goto error1;
}
/*
* Initialize realtime fields in the mount structure
*/
......
fs/xfs/xfs_rename.c
View file @ fdba8dd2
......@@ -91,7 +91,6 @@ xfs_lock_for_rename(
int error;
int i, j;
uint lock_mode;
uint lookup_flags;
int diff_dirs = (dp1 != dp2);
ip2 = NULL;
......@@ -123,11 +122,7 @@ xfs_lock_for_rename(
lock_mode = xfs_ilock_map_shared(dp2);
}
lookup_flags = DLF_IGET;
if (lock_mode == XFS_ILOCK_SHARED) {
lookup_flags |= DLF_LOCK_SHARED;
}
error = xfs_dir_lookup_int(XFS_ITOBHV(dp2), lookup_flags,
error = xfs_dir_lookup_int(XFS_ITOBHV(dp2), lock_mode,
dentry2, &inum2, &ip2);
if (error == ENOENT) { /* target does not need to exist. */
inum2 = 0;
......
fs/xfs/xfs_utils.c
View file @ fdba8dd2
......@@ -64,52 +64,27 @@ xfs_get_dir_entry(
return 0;
}
/*
* Wrapper around xfs_dir_lookup.
*
* If DLF_IGET is set, then this routine will also return the inode.
* Note that the inode will not be locked. Note, however, that the
* vnode will have an additional reference in this case.
*/
int
xfs_dir_lookup_int(
bhv_desc_t *dir_bdp,
int flags,
uint lock_mode,
struct dentry *dentry,
xfs_ino_t *inum,
xfs_inode_t **ipp)
{
vnode_t *dir_vp;
xfs_inode_t *dp;
char *name = (char *) dentry->d_name.name;
int name_len = dentry->d_name.len;
int error;
int do_iget;
uint lock_mode;
bhv_desc_t *bdp;
dir_vp = BHV_TO_VNODE(dir_bdp);
vn_trace_entry(dir_vp, "xfs_dir_lookup_int",
(inst_t *)__return_address);
do_iget = flags & DLF_IGET;
error = 0;
if (flags & DLF_LOCK_SHARED) {
lock_mode = XFS_ILOCK_SHARED;
} else {
lock_mode = XFS_ILOCK_EXCL;
}
dp = XFS_BHVTOI(dir_bdp);
bdp = NULL;
/*
* If all else fails, call the directory code.
*/
error = XFS_DIR_LOOKUP(dp->i_mount, NULL, dp, name, name_len, inum);
if (!error && do_iget) {
error = XFS_DIR_LOOKUP(dp->i_mount, NULL, dp,
(char *)dentry->d_name.name, dentry->d_name.len, inum);
if (!error) {
/*
* Unlock the directory. We do this because we can't
* hold the directory lock while doing the vn_get()
......@@ -119,22 +94,12 @@ xfs_dir_lookup_int(
* reservation in the inactive routine.
*/
xfs_iunlock(dp, lock_mode);
if (bdp) {
VN_RELE(BHV_TO_VNODE(bdp));
bdp = NULL;
}
error = xfs_iget(dp->i_mount, NULL, *inum, 0, ipp, 0);
xfs_ilock(dp, lock_mode);
if (error) {
*ipp = NULL;
return error;
}
if ((*ipp)->i_d.di_mode == 0) {
} else if ((*ipp)->i_d.di_mode == 0) {
/*
* The inode has been freed. Something is
* wrong so just get out of here.
......@@ -144,20 +109,8 @@ xfs_dir_lookup_int(
*ipp = NULL;
xfs_ilock(dp, lock_mode);
error = XFS_ERROR(ENOENT);
} else {
bdp = XFS_ITOBHV(*ipp);
bdp = NULL;
}
}
if (bdp) {
/* The only time we should get here is if the dir_lookup
* failed.
*/
ASSERT(error);
xfs_iunlock(dp, lock_mode);
VN_RELE(BHV_TO_VNODE(bdp));
xfs_ilock(dp, lock_mode);
}
return error;
}
......
fs/xfs/xfs_utils.h
View file @ fdba8dd2
......@@ -37,9 +37,6 @@
#define ITRACE(ip) vn_trace_ref(XFS_ITOV(ip), __FILE__, __LINE__, \
(inst_t *)__return_address)
#define DLF_IGET 0x01 /* get entry inode if name lookup succeeds */
#define DLF_LOCK_SHARED 0x02 /* directory locked shared */
struct bhv_desc;
struct cred;
struct vnode;
......@@ -63,7 +60,7 @@ xfs_get_dir_entry(
extern int
xfs_dir_lookup_int(
struct bhv_desc *dir_bdp,
int flags,
uint lock_mode,
struct dentry *dentry,
xfs_ino_t *inum,
struct xfs_inode **ipp);
......
fs/xfs/xfs_vfsops.c
View file @ fdba8dd2
......@@ -198,61 +198,17 @@ xfs_cleanup(void)
}
/*
* xfs_cmountfs
*
* This function is the common mount file system function for XFS.
* xfs_start_flags
*
* This function fills in xfs_mount_t fields based on mount args.
* Note: the superblock has _not_ yet been read in.
*/
STATIC int
xfs_cmountfs(
vfs_t *vfsp,
dev_t ddev,
dev_t logdev,
dev_t rtdev,
struct xfs_mount_args *ap,
struct cred *cr)
xfs_start_flags(
struct xfs_mount_args *ap,
struct xfs_mount *mp,
int ronly)
{
xfs_mount_t *mp;
int error = 0;
/*
* Allocate VFS private data (xfs mount structure).
*/
mp = xfs_mount_init();
vfs_insertbhv(vfsp, &mp->m_bhv, &xfs_vfsops, mp);
/*
* Open data, real time, and log devices now - order is important.
*/
mp->m_ddev_targp = pagebuf_lock_enable(ddev, 0);
if (IS_ERR(mp->m_ddev_targp)) {
error = PTR_ERR(mp->m_ddev_targp);
goto error2;
}
if (rtdev != 0) {
mp->m_rtdev_targp =
pagebuf_lock_enable(rtdev, 1);
if (IS_ERR(mp->m_rtdev_targp)) {
error = PTR_ERR(mp->m_rtdev_targp);
pagebuf_lock_disable(mp->m_ddev_targp, 0);
goto error2;
}
}
if (logdev != ddev) {
mp->m_logdev_targp =
pagebuf_lock_enable(logdev, 1);
if (IS_ERR(mp->m_logdev_targp)) {
error = PTR_ERR(mp->m_logdev_targp);
pagebuf_lock_disable(mp->m_ddev_targp, 1);
if (mp->m_rtdev_targp)
pagebuf_lock_disable(mp->m_rtdev_targp, 1);
goto error2;
}
}
/* Values are in BBs */
if ((ap->flags & XFSMNT_NOALIGN) != XFSMNT_NOALIGN) {
/*
......@@ -263,187 +219,155 @@ xfs_cmountfs(
*/
mp->m_dalign = ap->sunit;
mp->m_swidth = ap->swidth;
} else {
mp->m_dalign = 0;
mp->m_swidth = 0;
}
if (logdev != 0) {
if (logdev == ddev) {
mp->m_logdev_targp = mp->m_ddev_targp;
} else {
/* Set the log device's block size */
set_blocksize(mp->m_logdev_targp->pbr_bdev, 512);
}
if (ap->logbufs != 0 && ap->logbufs != -1 &&
(ap->logbufs < XLOG_NUM_ICLOGS ||
ap->logbufs > XLOG_MAX_ICLOGS)) {
cmn_err(CE_WARN,
"XFS: invalid logbufs value: %d [not %d-%d]\n",
ap->logbufs, XLOG_NUM_ICLOGS, XLOG_MAX_ICLOGS);
error = XFS_ERROR(EINVAL);
goto error3;
}
mp->m_logbufs = ap->logbufs;
if (ap->logbufsize != -1 &&
ap->logbufsize != 16 * 1024 &&
ap->logbufsize != 32 * 1024 &&
ap->logbufsize != 64 * 1024 &&
ap->logbufsize != 128 * 1024 &&
ap->logbufsize != 256 * 1024) {
cmn_err(CE_WARN,
"XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]\n",
ap->logbufsize);
error = XFS_ERROR(EINVAL);
goto error3;
}
mp->m_logbsize = ap->logbufsize;
mp->m_fsname_len = strlen(ap->fsname) + 1;
mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
strcpy(mp->m_fsname, ap->fsname);
if (ap->logbufs != 0 && ap->logbufs != -1 &&
(ap->logbufs < XLOG_NUM_ICLOGS ||
ap->logbufs > XLOG_MAX_ICLOGS)) {
cmn_err(CE_WARN,
"XFS: invalid logbufs value: %d [not %d-%d]\n",
ap->logbufs, XLOG_NUM_ICLOGS, XLOG_MAX_ICLOGS);
return XFS_ERROR(EINVAL);
}
if (rtdev != 0) {
if (rtdev == ddev || rtdev == logdev) {
cmn_err(CE_WARN,
"XFS: Cannot mount filesystem with identical rtdev and logdev.");
error = XFS_ERROR(EINVAL);
goto error3;
} else {
/* Set the realtime device's block size */
set_blocksize(mp->m_rtdev_targp->pbr_bdev, 512);
}
mp->m_logbufs = ap->logbufs;
if (ap->logbufsize != -1 &&
ap->logbufsize != 16 * 1024 &&
ap->logbufsize != 32 * 1024 &&
ap->logbufsize != 64 * 1024 &&
ap->logbufsize != 128 * 1024 &&
ap->logbufsize != 256 * 1024) {
cmn_err(CE_WARN,
"XFS: invalid logbufsize: %d [not 16k,32k,64k,128k or 256k]\n",
ap->logbufsize);
return XFS_ERROR(EINVAL);
}
mp->m_logbsize = ap->logbufsize;
mp->m_fsname_len = strlen(ap->fsname) + 1;
mp->m_fsname = kmem_alloc(mp->m_fsname_len, KM_SLEEP);
strcpy(mp->m_fsname, ap->fsname);
/*
* Pull in the 'wsync' and 'ino64' mount options before we do the real
* work of mounting and recovery. The arg pointer will
* be NULL when we are being called from the root mount code.
*/
if (ap->flags & XFSMNT_WSYNC)
mp->m_flags |= XFS_MOUNT_WSYNC;
#if XFS_BIG_FILESYSTEMS
mp->m_inoadd = 0;
#endif
if (ap != NULL) {
if (ap->flags & XFSMNT_WSYNC)
mp->m_flags |= XFS_MOUNT_WSYNC;
#if XFS_BIG_FILESYSTEMS
if (ap->flags & XFSMNT_INO64) {
mp->m_flags |= XFS_MOUNT_INO64;
mp->m_inoadd = XFS_INO64_OFFSET;
}
if (ap->flags & XFSMNT_INO64) {
mp->m_flags |= XFS_MOUNT_INO64;
mp->m_inoadd = XFS_INO64_OFFSET;
}
#endif
if (ap->flags & XFSMNT_NOATIME)
mp->m_flags |= XFS_MOUNT_NOATIME;
if (ap->flags & XFSMNT_NOATIME)
mp->m_flags |= XFS_MOUNT_NOATIME;
if (ap->flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA))
xfs_qm_mount_quotainit(mp, ap->flags);
if (ap->flags & (XFSMNT_UQUOTA | XFSMNT_GQUOTA))
xfs_qm_mount_quotainit(mp, ap->flags);
if (ap->flags & XFSMNT_RETERR)
mp->m_flags |= XFS_MOUNT_RETERR;
if (ap->flags & XFSMNT_RETERR)
mp->m_flags |= XFS_MOUNT_RETERR;
if (ap->flags & XFSMNT_NOALIGN)
mp->m_flags |= XFS_MOUNT_NOALIGN;
if (ap->flags & XFSMNT_NOALIGN)
mp->m_flags |= XFS_MOUNT_NOALIGN;
if (ap->flags & XFSMNT_OSYNCISOSYNC)
mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
if (ap->flags & XFSMNT_OSYNCISOSYNC)
mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
/* Default on Linux */
if ( 1 || ap->flags & XFSMNT_32BITINODES)
mp->m_flags |= XFS_MOUNT_32BITINODES;
/* Default on Linux */
if (1 || ap->flags & XFSMNT_32BITINODES)
mp->m_flags |= XFS_MOUNT_32BITINODES;
if (ap->flags & XFSMNT_IRIXSGID)
mp->m_flags |= XFS_MOUNT_IRIXSGID;
if (ap->flags & XFSMNT_IRIXSGID)
mp->m_flags |= XFS_MOUNT_IRIXSGID;
if (ap->flags & XFSMNT_IOSIZE) {
if (ap->iosizelog > XFS_MAX_IO_LOG ||
ap->iosizelog < XFS_MIN_IO_LOG) {
cmn_err(CE_WARN,
"XFS: invalid log iosize: %d [not %d-%d]",
ap->iosizelog, XFS_MIN_IO_LOG,
XFS_MAX_IO_LOG);
error = XFS_ERROR(EINVAL);
goto error3;
}
mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
}
/*
* no recovery flag requires a read-only mount
*/
if (ap->flags & XFSMNT_NORECOVERY) {
if (!(vfsp->vfs_flag & VFS_RDONLY)) {
cmn_err(CE_WARN,
"XFS: tried to mount a FS read-write without recovery!");
error = XFS_ERROR(EINVAL);
goto error3;
}
mp->m_flags |= XFS_MOUNT_NORECOVERY;
if (ap->flags & XFSMNT_IOSIZE) {
if (ap->iosizelog > XFS_MAX_IO_LOG ||
ap->iosizelog < XFS_MIN_IO_LOG) {
cmn_err(CE_WARN,
"XFS: invalid log iosize: %d [not %d-%d]",
ap->iosizelog, XFS_MIN_IO_LOG,
XFS_MAX_IO_LOG);
return XFS_ERROR(EINVAL);
}
if (ap->flags & XFSMNT_NOUUID)
mp->m_flags |= XFS_MOUNT_NOUUID;
if (ap->flags & XFSMNT_NOLOGFLUSH)
mp->m_flags |= XFS_MOUNT_NOLOGFLUSH;
mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE;
mp->m_readio_log = mp->m_writeio_log = ap->iosizelog;
}
/*
* read in superblock to check read-only flags and shared
* mount status
* no recovery flag requires a read-only mount
*/
if ((error = xfs_readsb(mp)))
goto error3;
if (ap->flags & XFSMNT_NORECOVERY) {
if (!ronly) {
cmn_err(CE_WARN,
"XFS: tried to mount a FS read-write without recovery!");
return XFS_ERROR(EINVAL);
}
mp->m_flags |= XFS_MOUNT_NORECOVERY;
}
if (ap->flags & XFSMNT_NOUUID)
mp->m_flags |= XFS_MOUNT_NOUUID;
if (ap->flags & XFSMNT_NOLOGFLUSH)
mp->m_flags |= XFS_MOUNT_NOLOGFLUSH;
return 0;
}
/*
* This function fills in xfs_mount_t fields based on mount args.
* Note: the superblock _has_ now been read in.
*/
STATIC int
xfs_finish_flags(
struct xfs_mount_args *ap,
struct xfs_mount *mp,
int ronly)
{
/* Fail a mount where the logbuf is smaller then the log stripe */
if (XFS_SB_VERSION_HASLOGV2(&mp->m_sb)) {
if (((ap->logbufsize == -1) &&
(mp->m_sb.sb_logsunit > XLOG_BIG_RECORD_BSIZE)) ||
(ap->logbufsize < mp->m_sb.sb_logsunit)) {
cmn_err(CE_WARN, "XFS: "
"logbuf size must be greater than or equal to log stripe size");
xfs_freesb(mp);
error = XFS_ERROR(EINVAL);
goto error3;
cmn_err(CE_WARN,
"XFS: logbuf size must be greater than or equal to log stripe size");
return XFS_ERROR(EINVAL);
}
} else {
/* Fail a mount if the logbuf is larger than 32K */
if (ap->logbufsize > XLOG_BIG_RECORD_BSIZE) {
cmn_err(CE_WARN, "XFS: "
"XFS: logbuf size for version 1 logs must be 16K or 32K");
xfs_freesb(mp);
error = XFS_ERROR(EINVAL);
goto error3;
cmn_err(CE_WARN,
"XFS: logbuf size for version 1 logs must be 16K or 32K");
return XFS_ERROR(EINVAL);
}
}
pagebuf_target_blocksize(mp->m_ddev_targp, mp->m_sb.sb_blocksize);
if (logdev != 0 && logdev != ddev)
pagebuf_target_blocksize(mp->m_logdev_targp, mp->m_sb.sb_blocksize);
if (rtdev != 0)
pagebuf_target_blocksize(mp->m_rtdev_targp, mp->m_sb.sb_blocksize);
/*
* prohibit r/w mounts of read-only filesystems
*/
if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) &&
!(vfsp->vfs_flag & VFS_RDONLY)) {
cmn_err(CE_WARN, "XFS: "
"cannot mount a read-only filesystem as read-write");
error = XFS_ERROR(EROFS);
xfs_freesb(mp);
goto error3;
if ((mp->m_sb.sb_flags & XFS_SBF_READONLY) && !ronly) {
cmn_err(CE_WARN,
"XFS: cannot mount a read-only filesystem as read-write");
return XFS_ERROR(EROFS);
}
/*
* disallow mount attempts with (IRIX) project quota enabled
*/
if (XFS_SB_VERSION_HASQUOTA(&mp->m_sb) &&
(mp->m_sb.sb_qflags & XFS_PQUOTA_ACCT)) {
cmn_err(CE_WARN,
"XFS: cannot mount a filesystem with IRIX project quota enabled");
return XFS_ERROR(ENOSYS);
}
/*
* check for shared mount.
*/
if (ap && ap->flags & XFSMNT_SHARED) {
if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb)) {
error = XFS_ERROR(EINVAL);
xfs_freesb(mp);
goto error3;
}
if (ap->flags & XFSMNT_SHARED) {
if (!XFS_SB_VERSION_HASSHARED(&mp->m_sb))
return XFS_ERROR(EINVAL);
/*
* For IRIX 6.5, shared mounts must have the shared
......@@ -451,32 +375,117 @@ xfs_cmountfs(
* field set, must be version 0 and can only be mounted
* read-only.
*/
if (!(vfsp->vfs_flag & VFS_RDONLY) ||
!(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
mp->m_sb.sb_shared_vn != 0) {
error = XFS_ERROR(EINVAL);
xfs_freesb(mp);
goto error3;
}
if (!ronly || !(mp->m_sb.sb_flags & XFS_SBF_READONLY) ||
(mp->m_sb.sb_shared_vn != 0))
return XFS_ERROR(EINVAL);
mp->m_flags |= XFS_MOUNT_SHARED;
/*
* Shared XFS V0 can't deal with DMI. Return EINVAL.
*/
if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI)) {
error = XFS_ERROR(EINVAL);
xfs_freesb(mp);
goto error3;
}
if (mp->m_sb.sb_shared_vn == 0 && (ap->flags & XFSMNT_DMAPI))
return XFS_ERROR(EINVAL);
}
if ((error = xfs_mountfs(vfsp, mp, ddev, 0)) == 0)
return 0;
return 0;
}
/*
* xfs_cmountfs
*
* This function is the common mount file system function for XFS.
*/
STATIC int
xfs_cmountfs(
vfs_t *vfsp,
dev_t ddev,
dev_t logdev,
dev_t rtdev,
struct xfs_mount_args *ap,
struct cred *cr)
{
xfs_mount_t *mp;
int ronly = (vfsp->vfs_flag & VFS_RDONLY);
int error = 0;
/*
* Allocate VFS private data (xfs mount structure).
*/
mp = xfs_mount_init();
vfs_insertbhv(vfsp, &mp->m_bhv, &xfs_vfsops, mp);
/*
* Be careful not to clobber the value of 'error' here.
* Open data, real time, and log devices now - order is important.
*/
mp->m_ddev_targp = pagebuf_lock_enable(ddev, 0);
if (IS_ERR(mp->m_ddev_targp)) {
error = PTR_ERR(mp->m_ddev_targp);
goto error2;
}
if (rtdev != 0) {
mp->m_rtdev_targp = pagebuf_lock_enable(rtdev, 1);
if (IS_ERR(mp->m_rtdev_targp)) {
error = PTR_ERR(mp->m_rtdev_targp);
pagebuf_lock_disable(mp->m_ddev_targp, 0);
goto error2;
}
if (rtdev == ddev || rtdev == logdev) {
cmn_err(CE_WARN,
"XFS: Cannot mount filesystem with identical rtdev and ddev/logdev.");
error = EINVAL;
pagebuf_lock_disable(mp->m_ddev_targp, 0);
goto error2;
}
/* Set the realtime device's block size */
set_blocksize(mp->m_rtdev_targp->pbr_bdev, 512);
}
if (logdev != ddev) {
mp->m_logdev_targp = pagebuf_lock_enable(logdev, 1);
if (IS_ERR(mp->m_logdev_targp)) {
error = PTR_ERR(mp->m_logdev_targp);
pagebuf_lock_disable(mp->m_ddev_targp, 1);
if (mp->m_rtdev_targp)
pagebuf_lock_disable(mp->m_rtdev_targp, 1);
goto error2;
}
/* Set the log device's block size */
set_blocksize(mp->m_logdev_targp->pbr_bdev, 512);
} else {
mp->m_logdev_targp = mp->m_ddev_targp;
}
if ((error = xfs_start_flags(ap, mp, ronly)))
goto error3;
if ((error = xfs_readsb(mp)))
goto error3;
if ((error = xfs_finish_flags(ap, mp, ronly))) {
xfs_freesb(mp);
goto error3;
}
pagebuf_target_blocksize(mp->m_ddev_targp, mp->m_sb.sb_blocksize);
if (logdev != 0 && logdev != ddev)
pagebuf_target_blocksize(mp->m_logdev_targp,
mp->m_sb.sb_blocksize);
if (rtdev != 0)
pagebuf_target_blocksize(mp->m_rtdev_targp,
mp->m_sb.sb_blocksize);
mp->m_cxfstype = XFS_CXFS_NOT;
error = xfs_mountfs(vfsp, mp, ddev, 0);
if (error)
goto error3;
return 0;
error3:
/* It's impossible to get here before buftargs are filled */
xfs_binval(mp->m_ddev_targp);
......
fs/xfs/xfs_vnodeops.c
View file @ fdba8dd2
......@@ -1144,138 +1144,70 @@ xfs_fsync(
* (Note that xfs_inode_item_format() called at commit clears
* the update_* fields.)
*/
if (!(flag & FSYNC_DATA)) {
xfs_ilock(ip, XFS_ILOCK_SHARED);
xfs_ilock(ip, XFS_ILOCK_SHARED);
if (ip->i_update_core == 0) {
/*
* Timestamps/size haven't changed since last inode
* flush or inode transaction commit. That means
* either nothing got written or a transaction
* committed which caught the updates. If the
* latter happened and the transaction hasn't
* hit the disk yet, the inode will be still
* be pinned. If it is, force the log.
*/
if (xfs_ipincount(ip) == 0) {
xfs_iunlock(ip, XFS_IOLOCK_EXCL |
XFS_ILOCK_SHARED);
} else {
xfs_iunlock(ip, XFS_IOLOCK_EXCL |
XFS_ILOCK_SHARED);
xfs_log_force(ip->i_mount, (xfs_lsn_t)0,
XFS_LOG_FORCE |
((flag & FSYNC_WAIT)
? XFS_LOG_SYNC : 0));
}
error = 0;
} else {
/*
* Kick off a transaction to log the inode
* core to get the updates. Make it
* sync if FSYNC_WAIT is passed in (which
* is done by everybody but specfs). The
* sync transaction will also force the log.
*/
xfs_iunlock(ip, XFS_ILOCK_SHARED);
tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_FSYNC_TS);
if ((error = xfs_trans_reserve(tp, 0,
XFS_FSYNC_TS_LOG_RES(ip->i_mount),
0, 0, 0))) {
xfs_trans_cancel(tp, 0);
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
/* If we are flushing data then we care about update_size
* being set, otherwise we care about update_core
*/
if ((flag & FSYNC_DATA) ?
(ip->i_update_size == 0) :
(ip->i_update_core == 0)) {
/*
* Timestamps/size haven't changed since last inode
* flush or inode transaction commit. That means
* either nothing got written or a transaction
* committed which caught the updates. If the
* latter happened and the transaction hasn't
* hit the disk yet, the inode will be still
* be pinned. If it is, force the log.
*/
/*
* Note - it's possible that we might have pushed
* ourselves out of the way during trans_reserve
* which would flush the inode. But there's no
* guarantee that the inode buffer has actually
* gone out yet (it's delwri). Plus the buffer
* could be pinned anyway if it's part of an
* inode in another recent transaction. So we
* play it safe and fire off the transaction anyway.
*/
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
if (flag & FSYNC_WAIT)
xfs_trans_set_sync(tp);
error = xfs_trans_commit(tp, 0, NULL);
xfs_iunlock(ip, XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL);
xfs_iunlock(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_SHARED);
if (xfs_ipincount(ip)) {
xfs_log_force(ip->i_mount, (xfs_lsn_t)0,
XFS_LOG_FORCE |
((flag & FSYNC_WAIT)
? XFS_LOG_SYNC : 0));
}
} else {
error = 0;
} else {
/*
* We don't care about the timestamps here. We
* only care about the size field growing on us
* and forcing any space allocation transactions.
* We have to flush changes to the size fields
* otherwise we could write out data that
* becomes inaccessible after a crash.
* Kick off a transaction to log the inode
* core to get the updates. Make it
* sync if FSYNC_WAIT is passed in (which
* is done by everybody but specfs). The
* sync transaction will also force the log.
*/
xfs_ilock(ip, XFS_ILOCK_SHARED);
if (ip->i_update_size == 0) {
/*
* Force the log if the inode is pinned.
* That ensures that all transactions committed
* against the inode hit the disk. This may do
* too much work but it's safe.
*/
if (xfs_ipincount(ip) == 0) {
xfs_iunlock(ip, XFS_IOLOCK_EXCL |
XFS_ILOCK_SHARED);
} else {
xfs_iunlock(ip, XFS_IOLOCK_EXCL |
XFS_ILOCK_SHARED);
xfs_log_force(ip->i_mount, (xfs_lsn_t)0,
XFS_LOG_FORCE |
((flag & FSYNC_WAIT)
? XFS_LOG_SYNC : 0));
}
error = 0;
} else {
/*
* Kick off a sync transaction to log the inode
* core. The transaction has to be sync since
* we need these updates to guarantee that the
* data written will be seen. The sync
* transaction will also force the log.
*/
xfs_iunlock(ip, XFS_ILOCK_SHARED);
xfs_iunlock(ip, XFS_ILOCK_SHARED);
tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_FSYNC_TS);
if ((error = xfs_trans_reserve(tp, 0,
XFS_FSYNC_TS_LOG_RES(ip->i_mount),
0, 0, 0))) {
xfs_trans_cancel(tp, 0);
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_FSYNC_TS);
if ((error = xfs_trans_reserve(tp, 0,
XFS_FSYNC_TS_LOG_RES(ip->i_mount),
0, 0, 0))) {
xfs_trans_cancel(tp, 0);
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
/*
* Note - it's possible that we might have pushed
* ourselves out of the way during trans_reserve
* which would flush the inode. But there's no
* guarantee that the inode buffer has actually
* gone out yet (it's delwri). Plus the buffer
* could be pinned anyway if it's part of an
* inode in another recent transaction. So we
* play it safe and fire off the transaction anyway.
*/
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
if (flag & FSYNC_WAIT)
xfs_trans_set_sync(tp);
error = xfs_trans_commit(tp, 0, NULL);
/*
* Note - it's possible that we might have pushed
* ourselves out of the way during trans_reserve
* which would flush the inode. But there's no
* guarantee that the inode buffer has actually
* gone out yet (it's delwri). Plus the buffer
* could be pinned anyway if it's part of an
* inode in another recent transaction. So we
* play it safe and fire off the transaction anyway.
*/
xfs_trans_ijoin(tp, ip, XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
if (flag & FSYNC_WAIT)
xfs_trans_set_sync(tp);
error = xfs_trans_commit(tp, 0, NULL);
xfs_iunlock(ip, XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL);
}
xfs_iunlock(ip, XFS_IOLOCK_EXCL|XFS_ILOCK_EXCL);
}
return error;
}
......@@ -1958,7 +1890,6 @@ xfs_lookup(
xfs_ino_t e_inum;
int error;
uint lock_mode;
uint lookup_flags;
vnode_t *dir_vp;
dir_vp = BHV_TO_VNODE(dir_bdp);
......@@ -1971,12 +1902,7 @@ xfs_lookup(
return XFS_ERROR(EIO);
lock_mode = xfs_ilock_map_shared(dp);
lookup_flags = DLF_IGET;
if (lock_mode == XFS_ILOCK_SHARED) {
lookup_flags |= DLF_LOCK_SHARED;
}
error = xfs_dir_lookup_int(dir_bdp, lookup_flags, dentry, &e_inum, &ip);
error = xfs_dir_lookup_int(dir_bdp, lock_mode, dentry, &e_inum, &ip);
if (error) {
xfs_iunlock_map_shared(dp, lock_mode);
return error;
......
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