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| author | Nathan Scott <nathans@sgi.com> | 2006-03-14 13:30:48 +1100 |
|---|---|---|
| committer | Nathan Scott <nathans@sgi.com> | 2006-03-14 13:30:48 +1100 |
| commit | 1f6553f9f9b6e41375c605769a75bd1646685a1b (patch) | |
| tree | 8fc48aaad9b58ebece96747d058b952e72866aa1 | |
| parent | 0293ce3a9fd1b34c933a96577a8ba737b681cf75 (diff) | |
| download | op-kernel-dev-1f6553f9f9b6e41375c605769a75bd1646685a1b.zip op-kernel-dev-1f6553f9f9b6e41375c605769a75bd1646685a1b.tar.gz | |
[XFS] Dynamically allocate local kiocb structures in readv/writev routines
to reduce stack footprint.
SGI-PV: 947312
SGI-Modid: xfs-linux-melb:xfs-kern:25358a
Signed-off-by: Nathan Scott <nathans@sgi.com>
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_file.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index ced4404..269995d 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -145,17 +145,22 @@ __linvfs_readv( { struct inode *inode = file->f_mapping->host; vnode_t *vp = LINVFS_GET_VP(inode); - struct kiocb kiocb; + struct kiocb *kiocb; ssize_t rval; - init_sync_kiocb(&kiocb, file); - kiocb.ki_pos = *ppos; + kiocb = kmalloc(sizeof(*kiocb), GFP_KERNEL); + if (unlikely(!kiocb)) + return -ENOMEM; + + init_sync_kiocb(kiocb, file); + kiocb->ki_pos = *ppos; if (unlikely(file->f_flags & O_DIRECT)) ioflags |= IO_ISDIRECT; - VOP_READ(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval); + VOP_READ(vp, kiocb, iov, nr_segs, &kiocb->ki_pos, ioflags, NULL, rval); - *ppos = kiocb.ki_pos; + *ppos = kiocb->ki_pos; + kfree(kiocb); return rval; } @@ -190,17 +195,22 @@ __linvfs_writev( { struct inode *inode = file->f_mapping->host; vnode_t *vp = LINVFS_GET_VP(inode); - struct kiocb kiocb; + struct kiocb *kiocb; ssize_t rval; - init_sync_kiocb(&kiocb, file); - kiocb.ki_pos = *ppos; + kiocb = kmalloc(sizeof(*kiocb), GFP_KERNEL); + if (unlikely(!kiocb)) + return -ENOMEM; + + init_sync_kiocb(kiocb, file); + kiocb->ki_pos = *ppos; if (unlikely(file->f_flags & O_DIRECT)) ioflags |= IO_ISDIRECT; - VOP_WRITE(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval); + VOP_WRITE(vp, kiocb, iov, nr_segs, &kiocb->ki_pos, ioflags, NULL, rval); - *ppos = kiocb.ki_pos; + *ppos = kiocb->ki_pos; + kfree(kiocb); return rval; } @@ -435,7 +445,7 @@ linvfs_ioctl( unsigned long arg) { int error; - struct inode *inode = filp->f_dentry->d_inode; + struct inode *inode = filp->f_dentry->d_inode; vnode_t *vp = LINVFS_GET_VP(inode); VOP_IOCTL(vp, inode, filp, 0, cmd, (void __user *)arg, error); @@ -457,7 +467,7 @@ linvfs_ioctl_invis( unsigned long arg) { int error; - struct inode *inode = filp->f_dentry->d_inode; + struct inode *inode = filp->f_dentry->d_inode; vnode_t *vp = LINVFS_GET_VP(inode); ASSERT(vp); |
