Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

5 files changed, 125 insertions, 227 deletions

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 3a9b7a1b8704..1d8eef9cf0f5 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -31,7 +31,6 @@
 #include "xfs_bmap.h"
 #include "xfs_bmap_util.h"
 #include "xfs_bmap_btree.h"
-#include <linux/aio.h>
 #include <linux/gfp.h>
 #include <linux/mpage.h>
 #include <linux/pagevec.h>
@@ -1496,7 +1495,6 @@ xfs_end_io_direct_write(
 
 STATIC ssize_t
 xfs_vm_direct_IO(
-	int			rw,
 	struct kiocb		*iocb,
 	struct iov_iter		*iter,
 	loff_t			offset)
@@ -1504,15 +1502,14 @@ xfs_vm_direct_IO(
 	struct inode		*inode = iocb->ki_filp->f_mapping->host;
 	struct block_device	*bdev = xfs_find_bdev_for_inode(inode);
 
-	if (rw & WRITE) {
-		return __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
-					    offset, xfs_get_blocks_direct,
+	if (iov_iter_rw(iter) == WRITE) {
+		return __blockdev_direct_IO(iocb, inode, bdev, iter, offset,
+					    xfs_get_blocks_direct,
 					    xfs_end_io_direct_write, NULL,
 					    DIO_ASYNC_EXTEND);
 	}
-	return __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
-				    offset, xfs_get_blocks_direct,
-				    NULL, NULL, 0);
+	return __blockdev_direct_IO(iocb, inode, bdev, iter, offset,
+				    xfs_get_blocks_direct, NULL, NULL, 0);
 }
 
 /*
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index a2e1cb8a568b..1f12ad0a8585 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -38,7 +38,6 @@
 #include "xfs_icache.h"
 #include "xfs_pnfs.h"
 
-#include <linux/aio.h>
 #include <linux/dcache.h>
 #include <linux/falloc.h>
 #include <linux/pagevec.h>
@@ -280,7 +279,7 @@ xfs_file_read_iter(
 
 	XFS_STATS_INC(xs_read_calls);
 
-	if (unlikely(file->f_flags & O_DIRECT))
+	if (unlikely(iocb->ki_flags & IOCB_DIRECT))
 		ioflags |= XFS_IO_ISDIRECT;
 	if (file->f_mode & FMODE_NOCMTIME)
 		ioflags |= XFS_IO_INVIS;
@@ -545,18 +544,19 @@ xfs_zero_eof(
  */
 STATIC ssize_t
 xfs_file_aio_write_checks(
-	struct file		*file,
-	loff_t			*pos,
-	size_t			*count,
+	struct kiocb		*iocb,
+	struct iov_iter		*from,
 	int			*iolock)
 {
+	struct file		*file = iocb->ki_filp;
 	struct inode		*inode = file->f_mapping->host;
 	struct xfs_inode	*ip = XFS_I(inode);
-	int			error = 0;
+	ssize_t			error = 0;
+	size_t			count = iov_iter_count(from);
 
 restart:
-	error = generic_write_checks(file, pos, count, S_ISBLK(inode->i_mode));
-	if (error)
+	error = generic_write_checks(iocb, from);
+	if (error <= 0)
 		return error;
 
 	error = xfs_break_layouts(inode, iolock);
@@ -570,16 +570,17 @@ restart:
 	 * iolock shared, we need to update it to exclusive which implies
 	 * having to redo all checks before.
 	 */
-	if (*pos > i_size_read(inode)) {
+	if (iocb->ki_pos > i_size_read(inode)) {
 		bool	zero = false;
 
 		if (*iolock == XFS_IOLOCK_SHARED) {
 			xfs_rw_iunlock(ip, *iolock);
 			*iolock = XFS_IOLOCK_EXCL;
 			xfs_rw_ilock(ip, *iolock);
+			iov_iter_reexpand(from, count);
 			goto restart;
 		}
-		error = xfs_zero_eof(ip, *pos, i_size_read(inode), &zero);
+		error = xfs_zero_eof(ip, iocb->ki_pos, i_size_read(inode), &zero);
 		if (error)
 			return error;
 	}
@@ -679,10 +680,11 @@ xfs_file_dio_aio_write(
 		xfs_rw_ilock(ip, iolock);
 	}
 
-	ret = xfs_file_aio_write_checks(file, &pos, &count, &iolock);
+	ret = xfs_file_aio_write_checks(iocb, from, &iolock);
 	if (ret)
 		goto out;
-	iov_iter_truncate(from, count);
+	count = iov_iter_count(from);
+	pos = iocb->ki_pos;
 
 	if (mapping->nrpages) {
 		ret = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
@@ -735,24 +737,22 @@ xfs_file_buffered_aio_write(
 	ssize_t			ret;
 	int			enospc = 0;
 	int			iolock = XFS_IOLOCK_EXCL;
-	loff_t			pos = iocb->ki_pos;
-	size_t			count = iov_iter_count(from);
 
 	xfs_rw_ilock(ip, iolock);
 
-	ret = xfs_file_aio_write_checks(file, &pos, &count, &iolock);
+	ret = xfs_file_aio_write_checks(iocb, from, &iolock);
 	if (ret)
 		goto out;
 
-	iov_iter_truncate(from, count);
 	/* We can write back this queue in page reclaim */
 	current->backing_dev_info = inode_to_bdi(inode);
 
 write_retry:
-	trace_xfs_file_buffered_write(ip, count, iocb->ki_pos, 0);
-	ret = generic_perform_write(file, from, pos);
+	trace_xfs_file_buffered_write(ip, iov_iter_count(from),
+				      iocb->ki_pos, 0);
+	ret = generic_perform_write(file, from, iocb->ki_pos);
 	if (likely(ret >= 0))
-		iocb->ki_pos = pos + ret;
+		iocb->ki_pos += ret;
 
 	/*
 	 * If we hit a space limit, try to free up some lingering preallocated
@@ -804,7 +804,7 @@ xfs_file_write_iter(
 	if (XFS_FORCED_SHUTDOWN(ip->i_mount))
 		return -EIO;
 
-	if (unlikely(file->f_flags & O_DIRECT))
+	if (unlikely(iocb->ki_flags & IOCB_DIRECT))
 		ret = xfs_file_dio_aio_write(iocb, from);
 	else
 		ret = xfs_file_buffered_aio_write(iocb, from);
@@ -1387,8 +1387,6 @@ xfs_file_llseek(
 
 const struct file_operations xfs_file_operations = {
 	.llseek		= xfs_file_llseek,
-	.read		= new_sync_read,
-	.write		= new_sync_write,
 	.read_iter	= xfs_file_read_iter,
 	.write_iter	= xfs_file_write_iter,
 	.splice_read	= xfs_file_splice_read,
diff --git a/fs/xfs/xfs_qm.h b/fs/xfs/xfs_qm.h
index 0d4d3590cf85..996a04064894 100644
--- a/fs/xfs/xfs_qm.h
+++ b/fs/xfs/xfs_qm.h
@@ -168,10 +168,6 @@ extern int		xfs_qm_scall_getquota(struct xfs_mount *, xfs_dqid_t,
 					uint, struct qc_dqblk *);
 extern int		xfs_qm_scall_setqlim(struct xfs_mount *, xfs_dqid_t, uint,
 					struct qc_dqblk *);
-extern int		xfs_qm_scall_getqstat(struct xfs_mount *,
-					struct fs_quota_stat *);
-extern int		xfs_qm_scall_getqstatv(struct xfs_mount *,
-					struct fs_quota_statv *);
 extern int		xfs_qm_scall_quotaon(struct xfs_mount *, uint);
 extern int		xfs_qm_scall_quotaoff(struct xfs_mount *, uint);
 
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 9b965db45800..9a25c9275fb3 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -38,7 +38,6 @@
 STATIC int	xfs_qm_log_quotaoff(xfs_mount_t *, xfs_qoff_logitem_t **, uint);
 STATIC int	xfs_qm_log_quotaoff_end(xfs_mount_t *, xfs_qoff_logitem_t *,
 					uint);
-STATIC uint	xfs_qm_export_flags(uint);
 
 /*
  * Turn off quota accounting and/or enforcement for all udquots and/or
@@ -389,159 +388,6 @@ xfs_qm_scall_quotaon(
 	return 0;
 }
 
-
-/*
- * Return quota status information, such as uquota-off, enforcements, etc.
- * for Q_XGETQSTAT command.
- */
-int
-xfs_qm_scall_getqstat(
-	struct xfs_mount	*mp,
-	struct fs_quota_stat	*out)
-{
-	struct xfs_quotainfo	*q = mp->m_quotainfo;
-	struct xfs_inode	*uip = NULL;
-	struct xfs_inode	*gip = NULL;
-	struct xfs_inode	*pip = NULL;
-	bool                    tempuqip = false;
-	bool                    tempgqip = false;
-	bool                    temppqip = false;
-
-	memset(out, 0, sizeof(fs_quota_stat_t));
-
-	out->qs_version = FS_QSTAT_VERSION;
-	out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
-							(XFS_ALL_QUOTA_ACCT|
-							 XFS_ALL_QUOTA_ENFD));
-	uip = q->qi_uquotaip;
-	gip = q->qi_gquotaip;
-	pip = q->qi_pquotaip;
-	if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
-					0, 0, &uip) == 0)
-			tempuqip = true;
-	}
-	if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
-					0, 0, &gip) == 0)
-			tempgqip = true;
-	}
-	/*
-	 * Q_XGETQSTAT doesn't have room for both group and project quotas.
-	 * So, allow the project quota values to be copied out only if
-	 * there is no group quota information available.
-	 */
-	if (!gip) {
-		if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
-			if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
-						0, 0, &pip) == 0)
-				temppqip = true;
-		}
-	} else
-		pip = NULL;
-	if (uip) {
-		out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
-		out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
-		out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
-		if (tempuqip)
-			IRELE(uip);
-	}
-
-	if (gip) {
-		out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-		out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
-		if (tempgqip)
-			IRELE(gip);
-	}
-	if (pip) {
-		out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-		out->qs_gquota.qfs_nblks = pip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = pip->i_d.di_nextents;
-		if (temppqip)
-			IRELE(pip);
-	}
-	out->qs_incoredqs = q->qi_dquots;
-	out->qs_btimelimit = q->qi_btimelimit;
-	out->qs_itimelimit = q->qi_itimelimit;
-	out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-	out->qs_bwarnlimit = q->qi_bwarnlimit;
-	out->qs_iwarnlimit = q->qi_iwarnlimit;
-
-	return 0;
-}
-
-/*
- * Return quota status information, such as uquota-off, enforcements, etc.
- * for Q_XGETQSTATV command, to support separate project quota field.
- */
-int
-xfs_qm_scall_getqstatv(
-	struct xfs_mount	*mp,
-	struct fs_quota_statv	*out)
-{
-	struct xfs_quotainfo	*q = mp->m_quotainfo;
-	struct xfs_inode	*uip = NULL;
-	struct xfs_inode	*gip = NULL;
-	struct xfs_inode	*pip = NULL;
-	bool                    tempuqip = false;
-	bool                    tempgqip = false;
-	bool                    temppqip = false;
-
-	out->qs_flags = (__uint16_t) xfs_qm_export_flags(mp->m_qflags &
-							(XFS_ALL_QUOTA_ACCT|
-							 XFS_ALL_QUOTA_ENFD));
-	out->qs_uquota.qfs_ino = mp->m_sb.sb_uquotino;
-	out->qs_gquota.qfs_ino = mp->m_sb.sb_gquotino;
-	out->qs_pquota.qfs_ino = mp->m_sb.sb_pquotino;
-
-	uip = q->qi_uquotaip;
-	gip = q->qi_gquotaip;
-	pip = q->qi_pquotaip;
-	if (!uip && mp->m_sb.sb_uquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_uquotino,
-					0, 0, &uip) == 0)
-			tempuqip = true;
-	}
-	if (!gip && mp->m_sb.sb_gquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_gquotino,
-					0, 0, &gip) == 0)
-			tempgqip = true;
-	}
-	if (!pip && mp->m_sb.sb_pquotino != NULLFSINO) {
-		if (xfs_iget(mp, NULL, mp->m_sb.sb_pquotino,
-					0, 0, &pip) == 0)
-			temppqip = true;
-	}
-	if (uip) {
-		out->qs_uquota.qfs_nblks = uip->i_d.di_nblocks;
-		out->qs_uquota.qfs_nextents = uip->i_d.di_nextents;
-		if (tempuqip)
-			IRELE(uip);
-	}
-
-	if (gip) {
-		out->qs_gquota.qfs_nblks = gip->i_d.di_nblocks;
-		out->qs_gquota.qfs_nextents = gip->i_d.di_nextents;
-		if (tempgqip)
-			IRELE(gip);
-	}
-	if (pip) {
-		out->qs_pquota.qfs_nblks = pip->i_d.di_nblocks;
-		out->qs_pquota.qfs_nextents = pip->i_d.di_nextents;
-		if (temppqip)
-			IRELE(pip);
-	}
-	out->qs_incoredqs = q->qi_dquots;
-	out->qs_btimelimit = q->qi_btimelimit;
-	out->qs_itimelimit = q->qi_itimelimit;
-	out->qs_rtbtimelimit = q->qi_rtbtimelimit;
-	out->qs_bwarnlimit = q->qi_bwarnlimit;
-	out->qs_iwarnlimit = q->qi_iwarnlimit;
-
-	return 0;
-}
-
 #define XFS_QC_MASK \
 	(QC_LIMIT_MASK | QC_TIMER_MASK | QC_WARNS_MASK)
 
@@ -873,28 +719,6 @@ out_put:
 	return error;
 }
 
-STATIC uint
-xfs_qm_export_flags(
-	uint flags)
-{
-	uint uflags;
-
-	uflags = 0;
-	if (flags & XFS_UQUOTA_ACCT)
-		uflags |= FS_QUOTA_UDQ_ACCT;
-	if (flags & XFS_GQUOTA_ACCT)
-		uflags |= FS_QUOTA_GDQ_ACCT;
-	if (flags & XFS_PQUOTA_ACCT)
-		uflags |= FS_QUOTA_PDQ_ACCT;
-	if (flags & XFS_UQUOTA_ENFD)
-		uflags |= FS_QUOTA_UDQ_ENFD;
-	if (flags & XFS_GQUOTA_ENFD)
-		uflags |= FS_QUOTA_GDQ_ENFD;
-	if (flags & XFS_PQUOTA_ENFD)
-		uflags |= FS_QUOTA_PDQ_ENFD;
-	return uflags;
-}
-
 
 STATIC int
 xfs_dqrele_inode(
diff --git a/fs/xfs/xfs_quotaops.c b/fs/xfs/xfs_quotaops.c
index 6923905ab33d..7795e0d01382 100644
--- a/fs/xfs/xfs_quotaops.c
+++ b/fs/xfs/xfs_quotaops.c
@@ -23,10 +23,81 @@
 #include "xfs_inode.h"
 #include "xfs_quota.h"
 #include "xfs_trans.h"
+#include "xfs_trace.h"
+#include "xfs_icache.h"
 #include "xfs_qm.h"
 #include <linux/quota.h>
 
 
+static void
+xfs_qm_fill_state(
+	struct qc_type_state	*tstate,
+	struct xfs_mount	*mp,
+	struct xfs_inode	*ip,
+	xfs_ino_t		ino)
+{
+	struct xfs_quotainfo *q = mp->m_quotainfo;
+	bool tempqip = false;
+
+	tstate->ino = ino;
+	if (!ip && ino == NULLFSINO)
+		return;
+	if (!ip) {
+		if (xfs_iget(mp, NULL, ino, 0, 0, &ip))
+			return;
+		tempqip = true;
+	}
+	tstate->flags |= QCI_SYSFILE;
+	tstate->blocks = ip->i_d.di_nblocks;
+	tstate->nextents = ip->i_d.di_nextents;
+	tstate->spc_timelimit = q->qi_btimelimit;
+	tstate->ino_timelimit = q->qi_itimelimit;
+	tstate->rt_spc_timelimit = q->qi_rtbtimelimit;
+	tstate->spc_warnlimit = q->qi_bwarnlimit;
+	tstate->ino_warnlimit = q->qi_iwarnlimit;
+	tstate->rt_spc_warnlimit = q->qi_rtbwarnlimit;
+	if (tempqip)
+		IRELE(ip);
+}
+
+/*
+ * Return quota status information, such as enforcements, quota file inode
+ * numbers etc.
+ */
+static int
+xfs_fs_get_quota_state(
+	struct super_block	*sb,
+	struct qc_state		*state)
+{
+	struct xfs_mount *mp = XFS_M(sb);
+	struct xfs_quotainfo *q = mp->m_quotainfo;
+
+	memset(state, 0, sizeof(*state));
+	if (!XFS_IS_QUOTA_RUNNING(mp))
+		return 0;
+	state->s_incoredqs = q->qi_dquots;
+	if (XFS_IS_UQUOTA_RUNNING(mp))
+		state->s_state[USRQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_UQUOTA_ENFORCED(mp))
+		state->s_state[USRQUOTA].flags |= QCI_LIMITS_ENFORCED;
+	if (XFS_IS_GQUOTA_RUNNING(mp))
+		state->s_state[GRPQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_GQUOTA_ENFORCED(mp))
+		state->s_state[GRPQUOTA].flags |= QCI_LIMITS_ENFORCED;
+	if (XFS_IS_PQUOTA_RUNNING(mp))
+		state->s_state[PRJQUOTA].flags |= QCI_ACCT_ENABLED;
+	if (XFS_IS_PQUOTA_ENFORCED(mp))
+		state->s_state[PRJQUOTA].flags |= QCI_LIMITS_ENFORCED;
+
+	xfs_qm_fill_state(&state->s_state[USRQUOTA], mp, q->qi_uquotaip,
+			  mp->m_sb.sb_uquotino);
+	xfs_qm_fill_state(&state->s_state[GRPQUOTA], mp, q->qi_gquotaip,
+			  mp->m_sb.sb_gquotino);
+	xfs_qm_fill_state(&state->s_state[PRJQUOTA], mp, q->qi_pquotaip,
+			  mp->m_sb.sb_pquotino);
+	return 0;
+}
+
 STATIC int
 xfs_quota_type(int type)
 {
@@ -40,28 +111,40 @@ xfs_quota_type(int type)
 	}
 }
 
-STATIC int
-xfs_fs_get_xstate(
+#define XFS_QC_SETINFO_MASK (QC_TIMER_MASK | QC_WARNS_MASK)
+
+/*
+ * Adjust quota timers & warnings
+ */
+static int
+xfs_fs_set_info(
 	struct super_block	*sb,
-	struct fs_quota_stat	*fqs)
+	int			type,
+	struct qc_info		*info)
 {
-	struct xfs_mount	*mp = XFS_M(sb);
+	struct xfs_mount *mp = XFS_M(sb);
+	struct qc_dqblk newlim;
 
+	if (sb->s_flags & MS_RDONLY)
+		return -EROFS;
 	if (!XFS_IS_QUOTA_RUNNING(mp))
 		return -ENOSYS;
-	return xfs_qm_scall_getqstat(mp, fqs);
-}
+	if (!XFS_IS_QUOTA_ON(mp))
+		return -ESRCH;
+	if (info->i_fieldmask & ~XFS_QC_SETINFO_MASK)
+		return -EINVAL;
+	if ((info->i_fieldmask & XFS_QC_SETINFO_MASK) == 0)
+		return 0;
 
-STATIC int
-xfs_fs_get_xstatev(
-	struct super_block	*sb,
-	struct fs_quota_statv	*fqs)
-{
-	struct xfs_mount	*mp = XFS_M(sb);
+	newlim.d_fieldmask = info->i_fieldmask;
+	newlim.d_spc_timer = info->i_spc_timelimit;
+	newlim.d_ino_timer = info->i_ino_timelimit;
+	newlim.d_rt_spc_timer = info->i_rt_spc_timelimit;
+	newlim.d_ino_warns = info->i_ino_warnlimit;
+	newlim.d_spc_warns = info->i_spc_warnlimit;
+	newlim.d_rt_spc_warns = info->i_rt_spc_warnlimit;
 
-	if (!XFS_IS_QUOTA_RUNNING(mp))
-		return -ENOSYS;
-	return xfs_qm_scall_getqstatv(mp, fqs);
+	return xfs_qm_scall_setqlim(mp, 0, xfs_quota_type(type), &newlim);
 }
 
 static unsigned int
@@ -178,8 +261,8 @@ xfs_fs_set_dqblk(
 }
 
 const struct quotactl_ops xfs_quotactl_operations = {
-	.get_xstatev		= xfs_fs_get_xstatev,
-	.get_xstate		= xfs_fs_get_xstate,
+	.get_state		= xfs_fs_get_quota_state,
+	.set_info		= xfs_fs_set_info,
 	.quota_enable		= xfs_quota_enable,
 	.quota_disable		= xfs_quota_disable,
 	.rm_xquota		= xfs_fs_rm_xquota,