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Date: Thu, 21 Jul 2016 12:40:18 +0200
From: Miklos Szeredi <mszeredi@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
Chris Mason <clm@...com>, Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH] mm: export filemap_check_errors() to modules
And use it instead of opencoding in btrfs, f2fs and in fuse (coming up).
Signed-off-by: Miklos Szeredi <mszeredi@...hat.com>
Cc: Chris Mason <clm@...com>
Cc: Jaegeuk Kim <jaegeuk@...nel.org>
---
fs/btrfs/ctree.h | 1 -
fs/btrfs/inode.c | 15 ---------------
fs/btrfs/tree-log.c | 4 ++--
fs/f2fs/node.c | 7 ++-----
include/linux/fs.h | 1 +
mm/filemap.c | 3 ++-
6 files changed, 7 insertions(+), 24 deletions(-)
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 4274a7bfdaed..425834193259 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3129,7 +3129,6 @@ int btrfs_prealloc_file_range_trans(struct inode *inode,
struct btrfs_trans_handle *trans, int mode,
u64 start, u64 num_bytes, u64 min_size,
loff_t actual_len, u64 *alloc_hint);
-int btrfs_inode_check_errors(struct inode *inode);
extern const struct dentry_operations btrfs_dentry_operations;
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
void btrfs_test_inode_set_ops(struct inode *inode);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 4421954720b8..b22841625333 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -10489,21 +10489,6 @@ out_inode:
}
-/* Inspired by filemap_check_errors() */
-int btrfs_inode_check_errors(struct inode *inode)
-{
- int ret = 0;
-
- if (test_bit(AS_ENOSPC, &inode->i_mapping->flags) &&
- test_and_clear_bit(AS_ENOSPC, &inode->i_mapping->flags))
- ret = -ENOSPC;
- if (test_bit(AS_EIO, &inode->i_mapping->flags) &&
- test_and_clear_bit(AS_EIO, &inode->i_mapping->flags))
- ret = -EIO;
-
- return ret;
-}
-
static const struct inode_operations btrfs_dir_inode_operations = {
.getattr = btrfs_getattr,
.lookup = btrfs_lookup,
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index c05f69a8ec42..3c29b9357392 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -3944,7 +3944,7 @@ static int wait_ordered_extents(struct btrfs_trans_handle *trans,
* i_mapping flags, so that the next fsync won't get
* an outdated io error too.
*/
- btrfs_inode_check_errors(inode);
+ filemap_check_errors(inode->i_mapping);
*ordered_io_error = true;
break;
}
@@ -4181,7 +4181,7 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans,
* without writing to the log tree and the fsync must report the
* file data write error and not commit the current transaction.
*/
- ret = btrfs_inode_check_errors(inode);
+ ret = filemap_check_errors(inode->i_mapping);
if (ret)
ctx->io_err = ret;
process:
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 1f21aae80c40..fde0e47fb119 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1521,7 +1521,7 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
{
pgoff_t index = 0, end = ULONG_MAX;
struct pagevec pvec;
- int ret2 = 0, ret = 0;
+ int ret2, ret = 0;
pagevec_init(&pvec, 0);
@@ -1550,10 +1550,7 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino)
cond_resched();
}
- if (unlikely(test_and_clear_bit(AS_ENOSPC, &NODE_MAPPING(sbi)->flags)))
- ret2 = -ENOSPC;
- if (unlikely(test_and_clear_bit(AS_EIO, &NODE_MAPPING(sbi)->flags)))
- ret2 = -EIO;
+ ret2 = filemap_check_errors(NODE_MAPPING(sbi));
if (!ret)
ret = ret2;
return ret;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index dd288148a6b1..6f2536a3a916 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2507,6 +2507,7 @@ extern int __filemap_fdatawrite_range(struct address_space *mapping,
loff_t start, loff_t end, int sync_mode);
extern int filemap_fdatawrite_range(struct address_space *mapping,
loff_t start, loff_t end);
+extern int filemap_check_errors(struct address_space *mapping);
extern int vfs_fsync_range(struct file *file, loff_t start, loff_t end,
int datasync);
diff --git a/mm/filemap.c b/mm/filemap.c
index 20f3b1f33f0e..6d92935dcf71 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -254,7 +254,7 @@ void delete_from_page_cache(struct page *page)
}
EXPORT_SYMBOL(delete_from_page_cache);
-static int filemap_check_errors(struct address_space *mapping)
+int filemap_check_errors(struct address_space *mapping)
{
int ret = 0;
/* Check for outstanding write errors */
@@ -266,6 +266,7 @@ static int filemap_check_errors(struct address_space *mapping)
ret = -EIO;
return ret;
}
+EXPORT_SYMBOL(filemap_check_errors);
/**
* __filemap_fdatawrite_range - start writeback on mapping dirty pages in range
--
2.5.5
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