(void *)((unsigned long)ioflags),
(void *)((unsigned long)((io->io_new_size >> 32) & 0xffffffff)),
(void *)((unsigned long)(io->io_new_size & 0xffffffff)),
- (void *)NULL,
+ (void *)((unsigned long)current_pid()),
(void *)NULL,
(void *)NULL,
(void *)NULL,
(void *)((unsigned long)(first & 0xffffffff)),
(void *)((unsigned long)((last >> 32) & 0xffffffff)),
(void *)((unsigned long)(last & 0xffffffff)),
- (void *)NULL,
+ (void *)((unsigned long)current_pid()),
(void *)NULL,
(void *)NULL,
(void *)NULL,
if (n < size)
size = n;
- if (XFS_FORCED_SHUTDOWN(mp)) {
+ if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
- }
if (unlikely(ioflags & IO_ISDIRECT))
mutex_lock(&inode->i_mutex);
dmflags, &locktype);
if (ret) {
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
- goto unlock_isem;
+ goto unlock_mutex;
}
}
+ if (unlikely((ioflags & IO_ISDIRECT) && VN_CACHED(vp)))
+ VOP_FLUSHINVAL_PAGES(vp, ctooff(offtoct(*offset)),
+ -1, FI_REMAPF_LOCKED);
+
xfs_rw_enter_trace(XFS_READ_ENTER, &ip->i_iocore,
(void *)iovp, segs, *offset, ioflags);
ret = __generic_file_aio_read(iocb, iovp, segs, offset);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
-unlock_isem:
+unlock_mutex:
if (unlikely(ioflags & IO_ISDIRECT))
mutex_unlock(&inode->i_mutex);
return ret;
void *target,
cred_t *credp)
{
+ xfs_inode_t *ip = XFS_BHVTOI(bdp);
+ xfs_mount_t *mp = ip->i_mount;
ssize_t ret;
- xfs_fsize_t n;
- xfs_inode_t *ip;
- xfs_mount_t *mp;
- vnode_t *vp;
-
- ip = XFS_BHVTOI(bdp);
- vp = BHV_TO_VNODE(bdp);
- mp = ip->i_mount;
XFS_STATS_INC(xs_read_calls);
-
- n = XFS_MAXIOFFSET(mp) - *offset;
- if ((n <= 0) || (count == 0))
- return 0;
-
- if (n < count)
- count = n;
-
- if (XFS_FORCED_SHUTDOWN(ip->i_mount))
+ if (XFS_FORCED_SHUTDOWN(mp))
return -EIO;
xfs_ilock(ip, XFS_IOLOCK_SHARED);
- if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ) &&
+ if (DM_EVENT_ENABLED(BHV_TO_VNODE(bdp)->v_vfsp, ip, DM_EVENT_READ) &&
(!(ioflags & IO_INVIS))) {
vrwlock_t locktype = VRWLOCK_READ;
int error;
- error = XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp), *offset, count,
+ error = XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp),
+ *offset, count,
FILP_DELAY_FLAG(filp), &locktype);
if (error) {
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
xfs_rw_enter_trace(XFS_SENDFILE_ENTER, &ip->i_iocore,
(void *)(unsigned long)target, count, *offset, ioflags);
ret = generic_file_sendfile(filp, offset, count, actor, target);
+ if (ret > 0)
+ XFS_STATS_ADD(xs_read_bytes, ret);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
+ return ret;
+}
+
+ssize_t
+xfs_splice_read(
+ bhv_desc_t *bdp,
+ struct file *infilp,
+ loff_t *ppos,
+ struct pipe_inode_info *pipe,
+ size_t count,
+ int flags,
+ int ioflags,
+ cred_t *credp)
+{
+ xfs_inode_t *ip = XFS_BHVTOI(bdp);
+ xfs_mount_t *mp = ip->i_mount;
+ ssize_t ret;
+
+ XFS_STATS_INC(xs_read_calls);
+ if (XFS_FORCED_SHUTDOWN(ip->i_mount))
+ return -EIO;
+
+ xfs_ilock(ip, XFS_IOLOCK_SHARED);
+
+ if (DM_EVENT_ENABLED(BHV_TO_VNODE(bdp)->v_vfsp, ip, DM_EVENT_READ) &&
+ (!(ioflags & IO_INVIS))) {
+ vrwlock_t locktype = VRWLOCK_READ;
+ int error;
+ error = XFS_SEND_DATA(mp, DM_EVENT_READ, BHV_TO_VNODE(bdp),
+ *ppos, count,
+ FILP_DELAY_FLAG(infilp), &locktype);
+ if (error) {
+ xfs_iunlock(ip, XFS_IOLOCK_SHARED);
+ return -error;
+ }
+ }
+ xfs_rw_enter_trace(XFS_SPLICE_READ_ENTER, &ip->i_iocore,
+ pipe, count, *ppos, ioflags);
+ ret = generic_file_splice_read(infilp, ppos, pipe, count, flags);
if (ret > 0)
XFS_STATS_ADD(xs_read_bytes, ret);
+ xfs_iunlock(ip, XFS_IOLOCK_SHARED);
+ return ret;
+}
+
+ssize_t
+xfs_splice_write(
+ bhv_desc_t *bdp,
+ struct pipe_inode_info *pipe,
+ struct file *outfilp,
+ loff_t *ppos,
+ size_t count,
+ int flags,
+ int ioflags,
+ cred_t *credp)
+{
+ xfs_inode_t *ip = XFS_BHVTOI(bdp);
+ xfs_mount_t *mp = ip->i_mount;
+ ssize_t ret;
+
+ XFS_STATS_INC(xs_write_calls);
+ if (XFS_FORCED_SHUTDOWN(ip->i_mount))
+ return -EIO;
+
+ xfs_ilock(ip, XFS_IOLOCK_EXCL);
+
+ if (DM_EVENT_ENABLED(BHV_TO_VNODE(bdp)->v_vfsp, ip, DM_EVENT_WRITE) &&
+ (!(ioflags & IO_INVIS))) {
+ vrwlock_t locktype = VRWLOCK_WRITE;
+ int error;
+
+ error = XFS_SEND_DATA(mp, DM_EVENT_WRITE, BHV_TO_VNODE(bdp),
+ *ppos, count,
+ FILP_DELAY_FLAG(outfilp), &locktype);
+ if (error) {
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+ return -error;
+ }
+ }
+ xfs_rw_enter_trace(XFS_SPLICE_WRITE_ENTER, &ip->i_iocore,
+ pipe, count, *ppos, ioflags);
+ ret = generic_file_splice_write(pipe, outfilp, ppos, count, flags);
+ if (ret > 0)
+ XFS_STATS_ADD(xs_write_bytes, ret);
+
+ xfs_iunlock(ip, XFS_IOLOCK_EXCL);
return ret;
}
xfs_fsize_t end_size)
{
xfs_fileoff_t last_fsb;
- xfs_mount_t *mp;
+ xfs_mount_t *mp = io->io_mount;
int nimaps;
int zero_offset;
int zero_len;
ASSERT(ismrlocked(io->io_lock, MR_UPDATE) != 0);
- mp = io->io_mount;
-
zero_offset = XFS_B_FSB_OFFSET(mp, isize);
if (zero_offset == 0) {
/*
* don't deadlock when the buffer cache calls back to us.
*/
XFS_IUNLOCK(mp, io, XFS_ILOCK_EXCL| XFS_EXTSIZE_RD);
- loff = XFS_FSB_TO_B(mp, last_fsb);
+ loff = XFS_FSB_TO_B(mp, last_fsb);
zero_len = mp->m_sb.sb_blocksize - zero_offset;
-
error = xfs_iozero(ip, loff + zero_offset, zero_len, end_size);
XFS_ILOCK(mp, io, XFS_ILOCK_EXCL|XFS_EXTSIZE_RD);
xfs_fsize_t isize, /* current inode size */
xfs_fsize_t end_size) /* terminal inode size */
{
- struct inode *ip = LINVFS_GET_IP(vp);
+ struct inode *ip = vn_to_inode(vp);
xfs_fileoff_t start_zero_fsb;
xfs_fileoff_t end_zero_fsb;
xfs_fileoff_t zero_count_fsb;
xfs_fileoff_t last_fsb;
xfs_extlen_t buf_len_fsb;
- xfs_mount_t *mp;
+ xfs_mount_t *mp = io->io_mount;
int nimaps;
int error = 0;
xfs_bmbt_irec_t imap;
ASSERT(ismrlocked(io->io_iolock, MR_UPDATE));
ASSERT(offset > isize);
- mp = io->io_mount;
-
/*
* First handle zeroing the block on which isize resides.
* We only zero a part of that block so it is handled specially.
vrwlock_t locktype;
size_t ocount = 0, count;
loff_t pos;
- int need_isem = 1, need_flush = 0;
+ int need_i_mutex = 1, need_flush = 0;
XFS_STATS_INC(xs_write_calls);
return XFS_ERROR(-EINVAL);
if (!VN_CACHED(vp) && pos < i_size_read(inode))
- need_isem = 0;
+ need_i_mutex = 0;
if (VN_CACHED(vp))
need_flush = 1;
}
relock:
- if (need_isem) {
+ if (need_i_mutex) {
iolock = XFS_IOLOCK_EXCL;
locktype = VRWLOCK_WRITE;
S_ISBLK(inode->i_mode));
if (error) {
xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
- goto out_unlock_isem;
+ goto out_unlock_mutex;
}
new_size = pos + count;
loff_t savedsize = pos;
int dmflags = FILP_DELAY_FLAG(file);
- if (need_isem)
+ if (need_i_mutex)
dmflags |= DM_FLAGS_IMUX;
xfs_iunlock(xip, XFS_ILOCK_EXCL);
dmflags, &locktype);
if (error) {
xfs_iunlock(xip, iolock);
- goto out_unlock_isem;
+ goto out_unlock_mutex;
}
xfs_ilock(xip, XFS_ILOCK_EXCL);
eventsent = 1;
/*
- * The iolock was dropped and reaquired in XFS_SEND_DATA
+ * The iolock was dropped and reacquired in XFS_SEND_DATA
* so we have to recheck the size when appending.
* We will only "goto start;" once, since having sent the
* event prevents another call to XFS_SEND_DATA, which is
isize, pos + count);
if (error) {
xfs_iunlock(xip, XFS_ILOCK_EXCL|iolock);
- goto out_unlock_isem;
+ goto out_unlock_mutex;
}
}
xfs_iunlock(xip, XFS_ILOCK_EXCL);
error = -remove_suid(file->f_dentry);
if (unlikely(error)) {
xfs_iunlock(xip, iolock);
- goto out_unlock_isem;
+ goto out_unlock_mutex;
}
}
-1, FI_REMAPF_LOCKED);
}
- if (need_isem) {
+ if (need_i_mutex) {
/* demote the lock now the cached pages are gone */
XFS_ILOCK_DEMOTE(mp, io, XFS_IOLOCK_EXCL);
mutex_unlock(&inode->i_mutex);
iolock = XFS_IOLOCK_SHARED;
locktype = VRWLOCK_WRITE_DIRECT;
- need_isem = 0;
+ need_i_mutex = 0;
}
xfs_rw_enter_trace(XFS_DIOWR_ENTER, io, (void *)iovp, segs,
pos += ret;
count -= ret;
- need_isem = 1;
+ need_i_mutex = 1;
ioflags &= ~IO_ISDIRECT;
xfs_iunlock(xip, iolock);
goto relock;
!(ioflags & IO_INVIS)) {
xfs_rwunlock(bdp, locktype);
- if (need_isem)
+ if (need_i_mutex)
mutex_unlock(&inode->i_mutex);
error = XFS_SEND_NAMESP(xip->i_mount, DM_EVENT_NOSPACE, vp,
DM_RIGHT_NULL, vp, DM_RIGHT_NULL, NULL, NULL,
0, 0, 0); /* Delay flag intentionally unused */
if (error)
goto out_nounlocks;
- if (need_isem)
+ if (need_i_mutex)
mutex_lock(&inode->i_mutex);
xfs_rwlock(bdp, locktype);
pos = xip->i_d.di_size;
if (error)
goto out_unlock_internal;
}
-
+
xfs_rwunlock(bdp, locktype);
- if (need_isem)
+ if (need_i_mutex)
mutex_unlock(&inode->i_mutex);
error = sync_page_range(inode, mapping, pos, ret);
out_unlock_internal:
xfs_rwunlock(bdp, locktype);
- out_unlock_isem:
- if (need_isem)
+ out_unlock_mutex:
+ if (need_i_mutex)
mutex_unlock(&inode->i_mutex);
out_nounlocks:
return -error;
projects / linux-flexiantxendom0-3.2.10.git / blobdiff