[PATCH 13/25] vfs: pass remap flags to generic_remap_checks

Darrick J. Wong
2018-10-10T00:13:21Z

Pass the same remap flags to generic_remap_checks for consistency.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/read_write.c | 2 +-
include/linux/fs.h | 2 +-
mm/filemap.c | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/read_write.c b/fs/read_write.c
index 47174785a94f..917934770b08 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1755,7 +1755,7 @@ int generic_remap_file_range_prep(struct file *file_in, loff_t pos_in,

/* Check that we don't violate system file offset limits. */
ret = generic_remap_checks(file_in, pos_in, file_out, pos_out, len,
- is_dedupe);
+ remap_flags);
if (ret)
return ret;

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0d9bdef0b4ea..56167b10cbad 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2976,7 +2976,7 @@ extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *);
extern ssize_t generic_write_checks(struct kiocb *, struct iov_iter *);
extern int generic_remap_checks(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
- uint64_t *count, bool is_dedupe);
+ uint64_t *count, unsigned int remap_flags);
extern ssize_t generic_file_read_iter(struct kiocb *, struct iov_iter *);
extern ssize_t __generic_file_write_iter(struct kiocb *, struct iov_iter *);
extern ssize_t generic_file_write_iter(struct kiocb *, struct iov_iter *);
diff --git a/mm/filemap.c b/mm/filemap.c
index 59056bd9c58a..e099c8880863 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -3004,7 +3004,7 @@ generic_remap_check_limits(struct file *file, loff_t pos, uint64_t *count)
*/
int generic_remap_checks(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
- uint64_t *req_count, bool is_dedupe)
+ uint64_t *req_count, unsigned int remap_flags)
{
struct inode *inode_in = file_in->f_mapping->host;
struct inode *inode_out = file_out->f_mapping->host;
@@ -3027,7 +3027,7 @@ int generic_remap_checks(struct file *file_in, loff_t pos_in,
size_out = i_size_read(inode_out);

/* Dedupe requires both ranges to be within EOF. */
- if (is_dedupe &&
+ if ((remap_flags & RFR_IDENTICAL_DATA) &&
(pos_in >= size_in || pos_in + count > size_in ||
pos_out >= size_out || pos_out + count > size_out))
return -EINVAL;