diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2013-12-12 12:24:11 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-09 12:24:20 -0800 |
| commit | 480da400c39d5c4398765623c7bb007a359a059f (patch) | |
| tree | b16ab85fc460e740e23468e46fa247c5534fa114 /include | |
| parent | 42ea20ee7fe958123981979da1c459160733dfdb (diff) | |
target/file: Update hw_max_sectors based on current block_size
commit 95cadace8f3959282e76ebf8b382bd0930807d2c upstream.
This patch allows FILEIO to update hw_max_sectors based on the current
max_bytes_per_io. This is required because vfs_[writev,readv]() can accept
a maximum of 2048 iovecs per call, so the enforced hw_max_sectors really
needs to be calculated based on block_size.
This addresses a >= v3.5 bug where block_size=512 was rejecting > 1M
sized I/O requests, because FD_MAX_SECTORS was hardcoded to 2048 for
the block_size=4096 case.
(v2: Use max_bytes_per_io instead of ->update_hw_max_sectors)
Reported-by: Henrik Goldman <hg@x-formation.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/target/target_core_base.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 4ea4f985f394..7d99c0b5b789 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -614,6 +614,7 @@ struct se_dev_attrib { u32 unmap_granularity; u32 unmap_granularity_alignment; u32 max_write_same_len; + u32 max_bytes_per_io; struct se_device *da_dev; struct config_group da_group; }; |