summaryrefslogtreecommitdiff
path: root/drivers/target/target_core_pr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/target/target_core_pr.c')
-rw-r--r--drivers/target/target_core_pr.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index 283cf786ef98..2de6fb8cee8d 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -1874,8 +1874,8 @@ static int core_scsi3_update_aptpl_buf(
}
if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
- pr_err("Unable to update renaming"
- " APTPL metadata\n");
+ pr_err("Unable to update renaming APTPL metadata,"
+ " reallocating larger buffer\n");
ret = -EMSGSIZE;
goto out;
}
@@ -1892,8 +1892,8 @@ static int core_scsi3_update_aptpl_buf(
lun->lun_sep->sep_rtpi, lun->unpacked_lun, reg_count);
if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
- pr_err("Unable to update renaming"
- " APTPL metadata\n");
+ pr_err("Unable to update renaming APTPL metadata,"
+ " reallocating larger buffer\n");
ret = -EMSGSIZE;
goto out;
}
@@ -1956,7 +1956,7 @@ static int __core_scsi3_write_aptpl_to_file(
static sense_reason_t core_scsi3_update_and_write_aptpl(struct se_device *dev, bool aptpl)
{
unsigned char *buf;
- int rc;
+ int rc, len = PR_APTPL_BUF_LEN;
if (!aptpl) {
char *null_buf = "No Registrations or Reservations\n";
@@ -1970,25 +1970,26 @@ static sense_reason_t core_scsi3_update_and_write_aptpl(struct se_device *dev, b
return 0;
}
-
- buf = kzalloc(PR_APTPL_BUF_LEN, GFP_KERNEL);
+retry:
+ buf = vzalloc(len);
if (!buf)
return TCM_OUT_OF_RESOURCES;
- rc = core_scsi3_update_aptpl_buf(dev, buf, PR_APTPL_BUF_LEN);
+ rc = core_scsi3_update_aptpl_buf(dev, buf, len);
if (rc < 0) {
- kfree(buf);
- return TCM_OUT_OF_RESOURCES;
+ vfree(buf);
+ len *= 2;
+ goto retry;
}
rc = __core_scsi3_write_aptpl_to_file(dev, buf);
if (rc != 0) {
pr_err("SPC-3 PR: Could not update APTPL\n");
- kfree(buf);
+ vfree(buf);
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
dev->t10_pr.pr_aptpl_active = 1;
- kfree(buf);
+ vfree(buf);
pr_debug("SPC-3 PR: Set APTPL Bit Activated\n");
return 0;
}