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SubjectRe: [PATCH v4 10/12] fs, dax: kill IS_DAX()
On Mon 26-02-18 20:20:48, Dan Williams wrote:
> In preparation for fixing the broken definition of S_DAX in the
> CONFIG_FS_DAX=n + CONFIG_DEV_DAX=y case, convert all the remaining
> IS_DAX() usages to use explicit tests for FSDAX.
>
> Cc: Jan Kara <jack@suse.com>
> Cc: Matthew Wilcox <mawilcox@microsoft.com>
> Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
> Cc: <stable@vger.kernel.org>
> Fixes: dee410792419 ("/dev/dax, core: file operations and dax-mmap")
> Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Looks good. You can add:

Reviewed-by: Jan Kara <jack@suse.cz>

Honza

> ---
> fs/iomap.c | 2 +-
> include/linux/dax.h | 2 +-
> include/linux/fs.h | 3 +--
> 3 files changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/fs/iomap.c b/fs/iomap.c
> index afd163586aa0..fe379d8949fd 100644
> --- a/fs/iomap.c
> +++ b/fs/iomap.c
> @@ -377,7 +377,7 @@ iomap_zero_range_actor(struct inode *inode, loff_t pos, loff_t count,
> offset = pos & (PAGE_SIZE - 1); /* Within page */
> bytes = min_t(loff_t, PAGE_SIZE - offset, count);
>
> - if (IS_DAX(inode))
> + if (IS_FSDAX(inode))
> status = iomap_dax_zero(pos, offset, bytes, iomap);
> else
> status = iomap_zero(inode, pos, offset, bytes, iomap);
> diff --git a/include/linux/dax.h b/include/linux/dax.h
> index 47edbce4fc52..ce520e932adc 100644
> --- a/include/linux/dax.h
> +++ b/include/linux/dax.h
> @@ -124,7 +124,7 @@ static inline ssize_t dax_iomap_rw(struct kiocb *iocb, struct iov_iter *iter,
>
> static inline bool dax_mapping(struct address_space *mapping)
> {
> - return mapping->host && IS_DAX(mapping->host);
> + return mapping->host && IS_FSDAX(mapping->host);
> }
>
> struct writeback_control;
> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 4a5aa8761011..8021f10068d3 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -1903,7 +1903,6 @@ static inline bool sb_rdonly(const struct super_block *sb) { return sb->s_flags
> #define IS_IMA(inode) ((inode)->i_flags & S_IMA)
> #define IS_AUTOMOUNT(inode) ((inode)->i_flags & S_AUTOMOUNT)
> #define IS_NOSEC(inode) ((inode)->i_flags & S_NOSEC)
> -#define IS_DAX(inode) ((inode)->i_flags & S_DAX)
> #define IS_ENCRYPTED(inode) ((inode)->i_flags & S_ENCRYPTED)
>
> #define IS_WHITEOUT(inode) (S_ISCHR(inode->i_mode) && \
> @@ -3203,7 +3202,7 @@ extern int file_update_time(struct file *file);
>
> static inline bool io_is_direct(struct file *filp)
> {
> - return (filp->f_flags & O_DIRECT) || IS_DAX(filp->f_mapping->host);
> + return (filp->f_flags & O_DIRECT) || IS_FSDAX(filp->f_mapping->host);
> }
>
> static inline bool vma_is_dax(struct vm_area_struct *vma)
>
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR

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