diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-02-11 18:34:40 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-18 14:10:57 +0100 |
| commit | 12c5ac27e69ca3d652a95d3f99423e5fadb274a1 (patch) | |
| tree | 51c62b42cc108bf375fa489c534fb02202f9f602 /include | |
| parent | a88c8685cd4acacc9bd6234e4f8124ec1ce7e494 (diff) | |
target: Fix PR_APTPL_BUF_LEN buffer size limitation
commit f161d4b44d7cc1dc66b53365215227db356378b1 upstream.
This patch addresses the original PR_APTPL_BUF_LEN = 8k limitiation
for write-out of PR APTPL metadata that Martin has recently been
running into.
It changes core_scsi3_update_and_write_aptpl() to use vzalloc'ed
memory instead of kzalloc, and increases the default hardcoded
length to 256k.
It also adds logic in core_scsi3_update_and_write_aptpl() to double
the original length upon core_scsi3_update_aptpl_buf() failure, and
retries until the vzalloc'ed buffer is large enough to accommodate
the outgoing APTPL metadata.
Reported-by: Martin Svec <martin.svec@zoner.cz>
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 | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index 4a8795a87b9e..672150b6aaf5 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -407,7 +407,7 @@ struct t10_reservation { /* Activate Persistence across Target Power Loss enabled * for SCSI device */ int pr_aptpl_active; -#define PR_APTPL_BUF_LEN 8192 +#define PR_APTPL_BUF_LEN 262144 u32 pr_generation; spinlock_t registration_lock; spinlock_t aptpl_reg_lock; |