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authorLinus Torvalds <torvalds@linux-foundation.org>2020-02-11 16:52:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-02-11 16:52:08 -0800
commit359c92c02bfae1a6f1e8e37c298e518fd256642c (patch)
treee441807d78b048e970f1f52f908d864468add31d /fs
parent61a75954034f951a77d58b1cfb9186c62e6abcf8 (diff)
parent96222d53842dfe54869ec4e1b9d4856daf9105a2 (diff)
Merge tag 'dax-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull dax fixes from Dan Williams: "A fix for an xfstest failure and some and an update that removes an fsdax dependency on block devices. Summary: - Fix RWF_NOWAIT writes to properly return -EAGAIN - Clean up an unused helper - Update dax_writeback_mapping_range to not need a block_device argument" * tag 'dax-fixes-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: dax: pass NOWAIT flag to iomap_apply dax: Get rid of fs_dax_get_by_host() helper dax: Pass dax_dev instead of bdev to dax_writeback_mapping_range()
Diffstat (limited to 'fs')
-rw-r--r--fs/dax.c11
-rw-r--r--fs/ext2/inode.c5
-rw-r--r--fs/ext4/inode.c2
-rw-r--r--fs/xfs/xfs_aops.c2
4 files changed, 9 insertions, 11 deletions
diff --git a/fs/dax.c b/fs/dax.c
index 1f1f0201cad1..35da144375a0 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -937,12 +937,11 @@ static int dax_writeback_one(struct xa_state *xas, struct dax_device *dax_dev,
* on persistent storage prior to completion of the operation.
*/
int dax_writeback_mapping_range(struct address_space *mapping,
- struct block_device *bdev, struct writeback_control *wbc)
+ struct dax_device *dax_dev, struct writeback_control *wbc)
{
XA_STATE(xas, &mapping->i_pages, wbc->range_start >> PAGE_SHIFT);
struct inode *inode = mapping->host;
pgoff_t end_index = wbc->range_end >> PAGE_SHIFT;
- struct dax_device *dax_dev;
void *entry;
int ret = 0;
unsigned int scanned = 0;
@@ -953,10 +952,6 @@ int dax_writeback_mapping_range(struct address_space *mapping,
if (!mapping->nrexceptional || wbc->sync_mode != WB_SYNC_ALL)
return 0;
- dax_dev = dax_get_by_host(bdev->bd_disk->disk_name);
- if (!dax_dev)
- return -EIO;
-
trace_dax_writeback_range(inode, xas.xa_index, end_index);
tag_pages_for_writeback(mapping, xas.xa_index, end_index);
@@ -977,7 +972,6 @@ int dax_writeback_mapping_range(struct address_space *mapping,
xas_lock_irq(&xas);
}
xas_unlock_irq(&xas);
- put_dax(dax_dev);
trace_dax_writeback_range_done(inode, xas.xa_index, end_index);
return ret;
}
@@ -1207,6 +1201,9 @@ dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
lockdep_assert_held(&inode->i_rwsem);
}
+ if (iocb->ki_flags & IOCB_NOWAIT)
+ flags |= IOMAP_NOWAIT;
+
while (iov_iter_count(iter)) {
ret = iomap_apply(inode, pos, iov_iter_count(iter), flags, ops,
iter, dax_iomap_actor);
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 119667e65890..c885cf7d724b 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -960,8 +960,9 @@ ext2_writepages(struct address_space *mapping, struct writeback_control *wbc)
static int
ext2_dax_writepages(struct address_space *mapping, struct writeback_control *wbc)
{
- return dax_writeback_mapping_range(mapping,
- mapping->host->i_sb->s_bdev, wbc);
+ struct ext2_sb_info *sbi = EXT2_SB(mapping->host->i_sb);
+
+ return dax_writeback_mapping_range(mapping, sbi->s_daxdev, wbc);
}
const struct address_space_operations ext2_aops = {
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 3313168b680f..1305b810c44a 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2867,7 +2867,7 @@ static int ext4_dax_writepages(struct address_space *mapping,
percpu_down_read(&sbi->s_journal_flag_rwsem);
trace_ext4_writepages(inode, wbc);
- ret = dax_writeback_mapping_range(mapping, inode->i_sb->s_bdev, wbc);
+ ret = dax_writeback_mapping_range(mapping, sbi->s_daxdev, wbc);
trace_ext4_writepages_result(inode, wbc, ret,
nr_to_write - wbc->nr_to_write);
percpu_up_read(&sbi->s_journal_flag_rwsem);
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 3a688eb5c5ae..58e937be24ce 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -587,7 +587,7 @@ xfs_dax_writepages(
xfs_iflags_clear(ip, XFS_ITRUNCATED);
return dax_writeback_mapping_range(mapping,
- xfs_inode_buftarg(ip)->bt_bdev, wbc);
+ xfs_inode_buftarg(ip)->bt_daxdev, wbc);
}
STATIC sector_t