From: Douglas Gilbert <dgilbert@interlog.com>
To: linux-scsi@vger.kernel.org
Cc: martin.petersen@oracle.com, jejb@linux.vnet.ibm.com, hare@suse.de
Subject: [PATCH v16 32/45] sg: add some __must_hold macros
Date: Fri, 19 Feb 2021 21:00:43 -0500 [thread overview]
Message-ID: <20210220020056.77483-33-dgilbert@interlog.com> (raw)
In-Reply-To: <20210220020056.77483-1-dgilbert@interlog.com>
In the case of sg_wait_open_event() which calls mutex_unlock on
sdp->open_rel_lock and later calls mutex_lock on the same
lock; this macro is needed to stop sparse complaining. In
other cases it is a reminder to the coder (a precondition).
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Douglas Gilbert <dgilbert@interlog.com>
---
drivers/scsi/sg.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 4f5604e5b2ba..c7eda0f81b07 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -375,6 +375,7 @@ sg_check_file_access(struct file *filp, const char *caller)
static int
sg_wait_open_event(struct sg_device *sdp, bool o_excl)
+ __must_hold(sdp->open_rel_lock)
{
int res = 0;
@@ -1740,6 +1741,7 @@ sg_ctl_sg_io(struct file *filp, struct sg_device *sdp, struct sg_fd *sfp,
*/
static int
sg_set_reserved_sz(struct sg_fd *sfp, int want_rsv_sz)
+ __must_hold(sfp->f_mutex)
{
bool use_new_srp = false;
int res = 0;
@@ -3696,12 +3698,12 @@ sg_remove_sfp(struct kref *kref)
static int
sg_idr_max_id(int id, void *p, void *data)
+ __must_hold(sg_index_lock)
{
int *k = data;
if (*k < id)
*k = id;
-
return 0;
}
@@ -4004,6 +4006,7 @@ sg_proc_seq_show_devstrs(struct seq_file *s, void *v)
/* Writes debug info for one sg_request in obp buffer */
static int
sg_proc_debug_sreq(struct sg_request *srp, int to, char *obp, int len)
+ __must_hold(sfp->srp_arr.xa_lock)
{
bool is_v3v4, v4, is_dur;
int n = 0;
@@ -4106,6 +4109,7 @@ sg_proc_debug_fd(struct sg_fd *fp, char *obp, int len, unsigned long idx)
/* Writes debug info for one sg device (including its sg fds) in obp buffer */
static int
sg_proc_debug_sdev(struct sg_device *sdp, char *obp, int len, int *fd_counterp)
+ __must_hold(sg_index_lock)
{
int n = 0;
int my_count = 0;
--
2.25.1
next prev parent reply other threads:[~2021-02-20 2:06 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-20 2:00 [PATCH v16 00/45] sg: add v4 interface Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 01/45] sg: move functions around Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 02/45] sg: remove typedefs, type+formatting cleanup Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 03/45] sg: sg_log and is_enabled Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 04/45] sg: rework sg_poll(), minor changes Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 05/45] sg: bitops in sg_device Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 06/45] sg: make open count an atomic Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 07/45] sg: move header to uapi section Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 08/45] sg: speed sg_poll and sg_get_num_waiting Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 09/45] sg: sg_allow_if_err_recovery and renames Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 10/45] sg: improve naming Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 11/45] sg: change rwlock to spinlock Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 12/45] sg: ioctl handling Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 13/45] sg: split sg_read Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 14/45] sg: sg_common_write add structure for arguments Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 15/45] sg: rework sg_vma_fault Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 16/45] sg: rework sg_mmap Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 17/45] sg: replace sg_allow_access Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 18/45] sg: rework scatter gather handling Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 19/45] sg: introduce request state machine Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 20/45] sg: sg_find_srp_by_id Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 21/45] sg: sg_fill_request_element Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 22/45] sg: printk change %p to %pK Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 23/45] sg: xarray for fds in device Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 24/45] sg: xarray for reqs in fd Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 25/45] sg: replace rq array with xarray Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 26/45] sg: sense buffer rework Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 27/45] sg: add sg v4 interface support Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 28/45] sg: rework debug info Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 29/45] sg: add 8 byte SCSI LUN to sg_scsi_id Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 30/45] sg: expand sg_comm_wr_t Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 31/45] sg: add sg_iosubmit_v3 and sg_ioreceive_v3 ioctls Douglas Gilbert
2021-02-20 2:00 ` Douglas Gilbert [this message]
2021-02-20 2:00 ` [PATCH v16 33/45] sg: move procfs objects to avoid forward decls Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 34/45] sg: protect multiple receivers Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 35/45] sg: first debugfs support Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 36/45] sg: rework mmap support Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 37/45] sg: defang allow_dio Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 38/45] sg: warn v3 write system call users Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 39/45] sg: add mmap_sz tracking Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 40/45] sg: remove rcv_done request state Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 41/45] sg: track lowest inactive and await indexes Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 42/45] sg: remove unit attention check for device changed Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 43/45] sg: no_dxfer: move to/from kernel buffers Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 44/45] sg: add blk_poll support Douglas Gilbert
2021-02-20 2:00 ` [PATCH v16 45/45] sg: bump version to 4.0.12 Douglas Gilbert
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