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| author | Boaz Harrosh <bharrosh@panasas.com> | 2010-11-16 19:09:58 +0100 |
|---|---|---|
| committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-08-07 04:35:31 +0200 |
| commit | e1042ba0991aab80ced34f7dade6ec25f22b4304 (patch) | |
| tree | 5953383f9235df91acfc2315a5c6fbdfb359ecf1 /fs/exofs/exofs.h | |
| parent | exofs: Fix truncate for the raid-groups case (diff) | |
| download | linux-e1042ba0991aab80ced34f7dade6ec25f22b4304.tar.xz linux-e1042ba0991aab80ced34f7dade6ec25f22b4304.zip | |
exofs: Add offset/length to exofs_get_io_state
In future raid code we will need to know the IO offset/length
and if it's a read or write to determine some of the array
sizes we'll need.
So add a new exofs_get_rw_state() API for use when
writeing/reading. All other simple cases are left using the
old way.
The major change to this is that now we need to call
exofs_get_io_state later at inode.c::read_exec and
inode.c::write_exec when we actually know these things. So this
patch is kept separate so I can test things apart from other
changes.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Diffstat (limited to 'fs/exofs/exofs.h')
| -rw-r--r-- | fs/exofs/exofs.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h index 9f62349a5a5c..fd913ddfd48b 100644 --- a/fs/exofs/exofs.h +++ b/fs/exofs/exofs.h @@ -109,7 +109,7 @@ static inline osd_id exofs_oi_objno(struct exofs_i_info *oi) } struct exofs_io_state; -typedef void (*exofs_io_done_fn)(struct exofs_io_state *or, void *private); +typedef void (*exofs_io_done_fn)(struct exofs_io_state *ios, void *private); struct exofs_io_state { struct kref kref; @@ -137,6 +137,8 @@ struct exofs_io_state { unsigned out_attr_len; struct osd_attr *out_attr; + bool reading; + /* Variable array of size numdevs */ unsigned numdevs; struct exofs_per_dev_state { @@ -218,6 +220,8 @@ void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj, u64 offset, void *p, unsigned length); +int exofs_get_rw_state(struct exofs_layout *layout, bool is_reading, + u64 offset, u64 length, struct exofs_io_state **ios); int exofs_get_io_state(struct exofs_layout *layout, struct exofs_io_state **ios); void exofs_put_io_state(struct exofs_io_state *ios); |