diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-02-12 05:34:40 +0300 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2015-02-12 23:24:12 +0300 |
| commit | f161d4b44d7cc1dc66b53365215227db356378b1 (patch) | |
| tree | fc7a5791374458619b4cd7aa8de799927de84617 /include/target | |
| parent | 3fd7b60f2c7418239d586e359e0c6d8503e10646 (diff) | |
| download | linux-f161d4b44d7cc1dc66b53365215227db356378b1.tar.xz | |
target: Fix PR_APTPL_BUF_LEN buffer size limitation
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>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target')
| -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 397fb635766a..eec07656eb03 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -409,7 +409,7 @@ 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; |