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Linux kernel 2.6.39 build fixes.

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@3403 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2011-04-25 09:05:11 +00:00
parent 89a47469b4
commit dfaedfa302
3 changed files with 87 additions and 13 deletions
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10
scst/src/dev_handlers/scst_vdisk.c
View File

@@ -2859,6 +2859,9 @@ static void blockio_exec_rw(struct scst_cmd *cmd, struct scst_vdisk_thr *thr,
struct scst_blockio_work *blockio_work;
int bios = 0;
gfp_t gfp_mask = (cmd->noio_mem_alloc ? GFP_NOIO : GFP_KERNEL);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)
struct blk_plug plug;
#endif
TRACE_ENTRY();
@@ -2964,6 +2967,9 @@ static void blockio_exec_rw(struct scst_cmd *cmd, struct scst_vdisk_thr *thr,
/* +1 to prevent erroneous too early command completion */
atomic_set(&blockio_work->bios_inflight, bios+1);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39)
blk_start_plug(&plug);
#endif
while (hbio) {
bio = hbio;
hbio = hbio->bi_next;
@@ -2971,8 +2977,12 @@ static void blockio_exec_rw(struct scst_cmd *cmd, struct scst_vdisk_thr *thr,
submit_bio((write != 0), bio);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39)
if (q && q->unplug_fn)
q->unplug_fn(q);
#else
blk_finish_plug(&plug);
#endif
blockio_check_finish(blockio_work);

81
scst/src/scst_pres.c
View File

@@ -568,28 +568,33 @@ out:
#ifndef CONFIG_SCST_PROC
/* Abstract vfs_unlink & path_put for different kernel versions */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
static inline void scst_pr_vfs_unlink_and_put(struct nameidata *nd)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
vfs_unlink(nd->dentry->d_parent->d_inode, nd->dentry);
dput(nd->dentry);
mntput(nd->mnt);
#else
vfs_unlink(nd->path.dentry->d_parent->d_inode,
nd->path.dentry);
path_put(&nd->path);
#endif
}
#else
static inline void scst_pr_vfs_unlink_and_put(struct path *path)
{
vfs_unlink(path->dentry->d_parent->d_inode, path->dentry);
path_put(path);
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
static inline void scst_pr_path_put(struct nameidata *nd)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
dput(nd->dentry);
mntput(nd->mnt);
#else
path_put(&nd->path);
#endif
}
#else
static inline void scst_pr_path_put(struct path *path)
{
path_put(path);
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
static int scst_pr_vfs_fsync(struct file *file, loff_t loff, loff_t len)
@@ -902,27 +907,59 @@ out:
return res;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25) \
&& LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 26)
static int kern_path(const char *name, unsigned int flags, struct path *path)
{
struct nameidata nd;
int res = do_path_lookup(AT_FDCWD, name, flags, &nd);
if (!res)
*path = nd.path;
return res;
}
#endif
static void scst_pr_remove_device_files(struct scst_tgt_dev *tgt_dev)
{
int res = 0;
struct scst_device *dev = tgt_dev->dev;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
struct nameidata nd;
#else
struct path path;
#endif
mm_segment_t old_fs = get_fs();
TRACE_ENTRY();
set_fs(KERNEL_DS);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
res = path_lookup(dev->pr_file_name, 0, &nd);
#else
res = kern_path(dev->pr_file_name, 0, &path);
#endif
if (!res)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
scst_pr_vfs_unlink_and_put(&nd);
#else
scst_pr_vfs_unlink_and_put(&path);
#endif
else
TRACE_DBG("Unable to lookup file '%s' - error %d",
dev->pr_file_name, res);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
res = path_lookup(dev->pr_file_name1, 0, &nd);
#else
res = kern_path(dev->pr_file_name1, 0, &path);
#endif
if (!res)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
scst_pr_vfs_unlink_and_put(&nd);
#else
scst_pr_vfs_unlink_and_put(&path);
#endif
else
TRACE_DBG("Unable to lookup file '%s' - error %d",
dev->pr_file_name1, res);
@@ -1105,12 +1142,24 @@ write_error:
write_error_close:
filp_close(file, NULL);
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
struct nameidata nd;
#else
struct path path;
#endif
int rc;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
rc = path_lookup(dev->pr_file_name, 0, &nd);
#else
rc = kern_path(dev->pr_file_name, 0, &path);
#endif
if (!rc)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
scst_pr_vfs_unlink_and_put(&nd);
#else
scst_pr_vfs_unlink_and_put(&path);
#endif
else
TRACE_PR("Unable to lookup '%s' - error %d",
dev->pr_file_name, rc);
@@ -1121,14 +1170,22 @@ write_error_close:
static int scst_pr_check_pr_path(void)
{
int res;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
struct nameidata nd;
#else
struct path path;
#endif
mm_segment_t old_fs = get_fs();
TRACE_ENTRY();
set_fs(KERNEL_DS);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
res = path_lookup(SCST_PR_DIR, 0, &nd);
#else
res = kern_path(SCST_PR_DIR, 0, &path);
#endif
if (res != 0) {
PRINT_ERROR("Unable to find %s (err %d), you should create "
"this directory manually or reinstall SCST",
@@ -1136,7 +1193,11 @@ static int scst_pr_check_pr_path(void)
goto out_setfs;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)
scst_pr_path_put(&nd);
#else
scst_pr_path_put(&path);
#endif
out_setfs:
set_fs(old_fs);

9
scst/src/scst_targ.c
View File

@@ -2629,9 +2629,11 @@ static inline int scst_real_exec(struct scst_cmd *cmd)
res = scst_do_real_exec(cmd);
if (likely(res == SCST_EXEC_COMPLETED)) {
scst_post_exec_sn(cmd, true);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39)
if (cmd->dev->scsi_dev != NULL)
generic_unplug_device(
cmd->dev->scsi_dev->request_queue);
#endif
} else
sBUG();
@@ -2734,7 +2736,6 @@ static int scst_exec(struct scst_cmd **active_cmd)
{
struct scst_cmd *cmd = *active_cmd;
struct scst_cmd *ref_cmd;
struct scst_device *dev = cmd->dev;
int res = SCST_CMD_STATE_RES_CONT_NEXT, count;
TRACE_ENTRY();
@@ -2795,8 +2796,10 @@ done:
if (count == 0)
goto out_put;
if (dev->scsi_dev != NULL)
generic_unplug_device(dev->scsi_dev->request_queue);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39)
if (cmd->dev->scsi_dev != NULL)
generic_unplug_device(cmd->dev->scsi_dev->request_queue);
#endif
out_put:
__scst_cmd_put(ref_cmd);