diff options
| author |   Christoph Hellwig <hch@lst.de> | 2018-06-01 09:03:06 -0700 |
|---|---|---|
| committer |   Darrick J. Wong <darrick.wong@oracle.com> | 2018-06-01 18:37:32 -0700 |
| commit | 19319b53210c6b89c375cf395c08f156cccd83ea (patch) | |
| tree | d0379f5b72aea5bbd5cf8d20738daa9aca93ff54 | |
| parent | mm: split ->readpages calls to avoid non-contiguous pages lists (diff) | |
| download | linux-dev-19319b53210c6b89c375cf395c08f156cccd83ea.tar.xz linux-dev-19319b53210c6b89c375cf395c08f156cccd83ea.zip | |
iomap: inline data should be an iomap type, not a flag
Inline data is fundamentally different from our normal mapped case in that
it doesn't even have a block address. So instead of having a flag for it
it should be an entirely separate iomap range type.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
| -rw-r--r-- | fs/ext4/inline.c | 4 | ||||
| -rw-r--r-- | fs/gfs2/bmap.c | 3 | ||||
| -rw-r--r-- | fs/iomap.c | 21 | ||||
| -rw-r--r-- | include/linux/iomap.h | 2 |
4 files changed, 16 insertions, 14 deletions
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 70cf4c7b268a..e1f00891ef95 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1835,8 +1835,8 @@ int ext4_inline_data_iomap(struct inode *inode, struct iomap *iomap) iomap->offset = 0; iomap->length = min_t(loff_t, ext4_get_inline_size(inode), i_size_read(inode)); - iomap->type = 0; - iomap->flags = IOMAP_F_DATA_INLINE; + iomap->type = IOMAP_INLINE; + iomap->flags = 0; out: up_read(&EXT4_I(inode)->xattr_sem); diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index 278ed0869c3c..cbeedd3cfb36 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -680,8 +680,7 @@ static void gfs2_stuffed_iomap(struct inode *inode, struct iomap *iomap) sizeof(struct gfs2_dinode); iomap->offset = 0; iomap->length = i_size_read(inode); - iomap->type = IOMAP_MAPPED; - iomap->flags = IOMAP_F_DATA_INLINE; + iomap->type = IOMAP_INLINE; } /** diff --git a/fs/iomap.c b/fs/iomap.c index f2456d0d8ddd..df2652b0d85d 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -502,10 +502,13 @@ static int iomap_to_fiemap(struct fiemap_extent_info *fi, case IOMAP_DELALLOC: flags |= FIEMAP_EXTENT_DELALLOC | FIEMAP_EXTENT_UNKNOWN; break; + case IOMAP_MAPPED: + break; case IOMAP_UNWRITTEN: flags |= FIEMAP_EXTENT_UNWRITTEN; break; - case IOMAP_MAPPED: + case IOMAP_INLINE: + flags |= FIEMAP_EXTENT_DATA_INLINE; break; } @@ -513,8 +516,6 @@ static int iomap_to_fiemap(struct fiemap_extent_info *fi, flags |= FIEMAP_EXTENT_MERGED; if (iomap->flags & IOMAP_F_SHARED) flags |= FIEMAP_EXTENT_SHARED; - if (iomap->flags & IOMAP_F_DATA_INLINE) - flags |= FIEMAP_EXTENT_DATA_INLINE; return fiemap_fill_next_extent(fi, iomap->offset, iomap->addr != IOMAP_NULL_ADDR ? iomap->addr : 0, @@ -1214,14 +1215,16 @@ static loff_t iomap_swapfile_activate_actor(struct inode *inode, loff_t pos, struct iomap_swapfile_info *isi = data; int error; - /* No inline data. */ - if (iomap->flags & IOMAP_F_DATA_INLINE) { + switch (iomap->type) { + case IOMAP_MAPPED: + case IOMAP_UNWRITTEN: + /* Only real or unwritten extents. */ + break; + case IOMAP_INLINE: + /* No inline data. */ pr_err("swapon: file is inline\n"); return -EINVAL; - } - - /* Only real or unwritten extents. */ - if (iomap->type != IOMAP_MAPPED && iomap->type != IOMAP_UNWRITTEN) { + default: pr_err("swapon: file has unallocated extents\n"); return -EINVAL; } diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 4bd87294219a..8f7095fc514e 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -18,6 +18,7 @@ struct vm_fault; #define IOMAP_DELALLOC 0x02 /* delayed allocation blocks */ #define IOMAP_MAPPED 0x03 /* blocks allocated at @addr */ #define IOMAP_UNWRITTEN 0x04 /* blocks allocated at @addr in unwritten state */ +#define IOMAP_INLINE 0x05 /* data inline in the inode */ /* * Flags for all iomap mappings: @@ -34,7 +35,6 @@ struct vm_fault; */ #define IOMAP_F_MERGED 0x10 /* contains multiple blocks/extents */ #define IOMAP_F_SHARED 0x20 /* block shared with another file */ -#define IOMAP_F_DATA_INLINE 0x40 /* data inline in the inode */ /* * Magic value for addr: |