The patch titled
Subject: staging: lustre: convert uses of "int rc = seq_printf(...)"
has been added to the -mm tree. Its filename is
staging-lustre-convert-uses-of-int-rc-=-seq_printf.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/staging-lustre-convert-uses-of-int-rc-%3D-seq_printf.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/staging-lustre-convert-uses-of-int-rc-%3D-seq_printf.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Joe Perches <joe@xxxxxxxxxxx>
Subject: staging: lustre: convert uses of "int rc = seq_printf(...)"
The seq_printf return value, because it's frequently misused,
will eventually be converted to void.
See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to
seq_has_overflowed() and make public")
Convert these uses to:
seq_printf(seq, ...);
return 0;
Done via cocci script:
@@
struct seq_file *seq;
int i;
@@
- i = seq_printf(seq,
+ seq_printf(seq,
...);
...
- return i;
+ return 0;
@@
struct seq_file *seq;
int i;
@@
- i = 0;
- i += seq_printf(seq,
+ seq_printf(seq,
...);
...
- return i;
+ return 0;
With some additional reformatting and typing post conversion
to remove the now unnecessary "int i;" declaration.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Cc: Oleg Drokin <oleg.drokin@xxxxxxxxx>
Cc: Andreas Dilger <andreas.dilger@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/staging/lustre/lustre/fid/lproc_fid.c | 23 +-
drivers/staging/lustre/lustre/llite/lproc_llite.c | 5
drivers/staging/lustre/lustre/mdc/lproc_mdc.c | 6
drivers/staging/lustre/lustre/osc/lproc_osc.c | 45 ++---
drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c | 5
drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c | 82 ++++------
6 files changed, 79 insertions(+), 87 deletions(-)
diff -puN drivers/staging/lustre/lustre/fid/lproc_fid.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf drivers/staging/lustre/lustre/fid/lproc_fid.c
--- a/drivers/staging/lustre/lustre/fid/lproc_fid.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf
+++ a/drivers/staging/lustre/lustre/fid/lproc_fid.c
@@ -120,15 +120,14 @@ static int
lprocfs_fid_space_seq_show(struct seq_file *m, void *unused)
{
struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
- int rc;
LASSERT(seq != NULL);
mutex_lock(&seq->lcs_mutex);
- rc = seq_printf(m, "[%#llx - %#llx]:%x:%s\n", PRANGE(&seq->lcs_space));
+ seq_printf(m, "[%#llx - %#llx]:%x:%s\n", PRANGE(&seq->lcs_space));
mutex_unlock(&seq->lcs_mutex);
- return rc;
+ return 0;
}
static ssize_t lprocfs_fid_width_seq_write(struct file *file,
@@ -170,30 +169,28 @@ static int
lprocfs_fid_width_seq_show(struct seq_file *m, void *unused)
{
struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
- int rc;
LASSERT(seq != NULL);
mutex_lock(&seq->lcs_mutex);
- rc = seq_printf(m, "%llu\n", seq->lcs_width);
+ seq_printf(m, "%llu\n", seq->lcs_width);
mutex_unlock(&seq->lcs_mutex);
- return rc;
+ return 0;
}
static int
lprocfs_fid_fid_seq_show(struct seq_file *m, void *unused)
{
struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
- int rc;
LASSERT(seq != NULL);
mutex_lock(&seq->lcs_mutex);
- rc = seq_printf(m, DFID"\n", PFID(&seq->lcs_fid));
+ seq_printf(m, DFID"\n", PFID(&seq->lcs_fid));
mutex_unlock(&seq->lcs_mutex);
- return rc;
+ return 0;
}
static int
@@ -201,17 +198,17 @@ lprocfs_fid_server_seq_show(struct seq_f
{
struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
struct client_obd *cli;
- int rc;
LASSERT(seq != NULL);
if (seq->lcs_exp != NULL) {
cli = &seq->lcs_exp->exp_obd->u.cli;
- rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
+ seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
} else {
- rc = seq_printf(m, "%s\n", seq->lcs_srv->lss_name);
+ seq_printf(m, "%s\n", seq->lcs_srv->lss_name);
}
- return rc;
+
+ return 0;
}
LPROC_SEQ_FOPS(lprocfs_fid_space);
diff -puN drivers/staging/lustre/lustre/llite/lproc_llite.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf drivers/staging/lustre/lustre/llite/lproc_llite.c
--- a/drivers/staging/lustre/lustre/llite/lproc_llite.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf
+++ a/drivers/staging/lustre/lustre/llite/lproc_llite.c
@@ -799,11 +799,10 @@ static int ll_xattr_cache_seq_show(struc
{
struct super_block *sb = m->private;
struct ll_sb_info *sbi = ll_s2sbi(sb);
- int rc;
- rc = seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
+ seq_printf(m, "%u\n", sbi->ll_xattr_cache_enabled);
- return rc;
+ return 0;
}
static ssize_t ll_xattr_cache_seq_write(struct file *file,
diff -puN drivers/staging/lustre/lustre/mdc/lproc_mdc.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf drivers/staging/lustre/lustre/mdc/lproc_mdc.c
--- a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf
+++ a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
@@ -43,12 +43,12 @@ static int mdc_max_rpcs_in_flight_seq_sh
{
struct obd_device *dev = m->private;
struct client_obd *cli = &dev->u.cli;
- int rc;
client_obd_list_lock(&cli->cl_loi_list_lock);
- rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
+ seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
client_obd_list_unlock(&cli->cl_loi_list_lock);
- return rc;
+
+ return 0;
}
static ssize_t mdc_max_rpcs_in_flight_seq_write(struct file *file,
diff -puN drivers/staging/lustre/lustre/osc/lproc_osc.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf drivers/staging/lustre/lustre/osc/lproc_osc.c
--- a/drivers/staging/lustre/lustre/osc/lproc_osc.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf
+++ a/drivers/staging/lustre/lustre/osc/lproc_osc.c
@@ -45,12 +45,12 @@
static int osc_active_seq_show(struct seq_file *m, void *v)
{
struct obd_device *dev = m->private;
- int rc;
LPROCFS_CLIMP_CHECK(dev);
- rc = seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
+ seq_printf(m, "%d\n", !dev->u.cli.cl_import->imp_deactive);
LPROCFS_CLIMP_EXIT(dev);
- return rc;
+
+ return 0;
}
static ssize_t osc_active_seq_write(struct file *file,
@@ -80,12 +80,12 @@ static int osc_max_rpcs_in_flight_seq_sh
{
struct obd_device *dev = m->private;
struct client_obd *cli = &dev->u.cli;
- int rc;
client_obd_list_lock(&cli->cl_loi_list_lock);
- rc = seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
+ seq_printf(m, "%u\n", cli->cl_max_rpcs_in_flight);
client_obd_list_unlock(&cli->cl_loi_list_lock);
- return rc;
+
+ return 0;
}
static ssize_t osc_max_rpcs_in_flight_seq_write(struct file *file,
@@ -164,16 +164,15 @@ static int osc_cached_mb_seq_show(struct
struct obd_device *dev = m->private;
struct client_obd *cli = &dev->u.cli;
int shift = 20 - PAGE_CACHE_SHIFT;
- int rc;
- rc = seq_printf(m,
- "used_mb: %d\n"
- "busy_cnt: %d\n",
- (atomic_read(&cli->cl_lru_in_list) +
- atomic_read(&cli->cl_lru_busy)) >> shift,
- atomic_read(&cli->cl_lru_busy));
+ seq_printf(m,
+ "used_mb: %d\n"
+ "busy_cnt: %d\n",
+ (atomic_read(&cli->cl_lru_in_list) +
+ atomic_read(&cli->cl_lru_busy)) >> shift,
+ atomic_read(&cli->cl_lru_busy));
- return rc;
+ return 0;
}
/* shrink the number of caching pages to a specific number */
@@ -215,12 +214,12 @@ static int osc_cur_dirty_bytes_seq_show(
{
struct obd_device *dev = m->private;
struct client_obd *cli = &dev->u.cli;
- int rc;
client_obd_list_lock(&cli->cl_loi_list_lock);
- rc = seq_printf(m, "%lu\n", cli->cl_dirty);
+ seq_printf(m, "%lu\n", cli->cl_dirty);
client_obd_list_unlock(&cli->cl_loi_list_lock);
- return rc;
+
+ return 0;
}
LPROC_SEQ_FOPS_RO(osc_cur_dirty_bytes);
@@ -228,12 +227,12 @@ static int osc_cur_grant_bytes_seq_show(
{
struct obd_device *dev = m->private;
struct client_obd *cli = &dev->u.cli;
- int rc;
client_obd_list_lock(&cli->cl_loi_list_lock);
- rc = seq_printf(m, "%lu\n", cli->cl_avail_grant);
+ seq_printf(m, "%lu\n", cli->cl_avail_grant);
client_obd_list_unlock(&cli->cl_loi_list_lock);
- return rc;
+
+ return 0;
}
static ssize_t osc_cur_grant_bytes_seq_write(struct file *file,
@@ -274,12 +273,12 @@ static int osc_cur_lost_grant_bytes_seq_
{
struct obd_device *dev = m->private;
struct client_obd *cli = &dev->u.cli;
- int rc;
client_obd_list_lock(&cli->cl_loi_list_lock);
- rc = seq_printf(m, "%lu\n", cli->cl_lost_grant);
+ seq_printf(m, "%lu\n", cli->cl_lost_grant);
client_obd_list_unlock(&cli->cl_loi_list_lock);
- return rc;
+
+ return 0;
}
LPROC_SEQ_FOPS_RO(osc_cur_lost_grant_bytes);
diff -puN drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c
--- a/drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf
+++ a/drivers/staging/lustre/lustre/ptlrpc/lproc_ptlrpc.c
@@ -1328,13 +1328,12 @@ int lprocfs_rd_pinger_recov(struct seq_f
{
struct obd_device *obd = m->private;
struct obd_import *imp = obd->u.cli.cl_import;
- int rc;
LPROCFS_CLIMP_CHECK(obd);
- rc = seq_printf(m, "%d\n", !imp->imp_no_pinger_recover);
+ seq_printf(m, "%d\n", !imp->imp_no_pinger_recover);
LPROCFS_CLIMP_EXIT(obd);
- return rc;
+ return 0;
}
EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
diff -puN drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
--- a/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c~staging-lustre-convert-uses-of-int-rc-=-seq_printf
+++ a/drivers/staging/lustre/lustre/ptlrpc/sec_bulk.c
@@ -125,52 +125,50 @@ static struct ptlrpc_enc_page_pool {
*/
int sptlrpc_proc_enc_pool_seq_show(struct seq_file *m, void *v)
{
- int rc;
-
spin_lock(&page_pools.epp_lock);
- rc = seq_printf(m,
- "physical pages: %lu\n"
- "pages per pool: %lu\n"
- "max pages: %lu\n"
- "max pools: %u\n"
- "total pages: %lu\n"
- "total free: %lu\n"
- "idle index: %lu/100\n"
- "last shrink: %lds\n"
- "last access: %lds\n"
- "max pages reached: %lu\n"
- "grows: %u\n"
- "grows failure: %u\n"
- "shrinks: %u\n"
- "cache access: %lu\n"
- "cache missing: %lu\n"
- "low free mark: %lu\n"
- "max waitqueue depth: %u\n"
- "max wait time: "CFS_TIME_T"/%u\n"
- ,
- totalram_pages,
- PAGES_PER_POOL,
- page_pools.epp_max_pages,
- page_pools.epp_max_pools,
- page_pools.epp_total_pages,
- page_pools.epp_free_pages,
- page_pools.epp_idle_idx,
- get_seconds() - page_pools.epp_last_shrink,
- get_seconds() - page_pools.epp_last_access,
- page_pools.epp_st_max_pages,
- page_pools.epp_st_grows,
- page_pools.epp_st_grow_fails,
- page_pools.epp_st_shrinks,
- page_pools.epp_st_access,
- page_pools.epp_st_missings,
- page_pools.epp_st_lowfree,
- page_pools.epp_st_max_wqlen,
- page_pools.epp_st_max_wait, HZ
- );
+ seq_printf(m,
+ "physical pages: %lu\n"
+ "pages per pool: %lu\n"
+ "max pages: %lu\n"
+ "max pools: %u\n"
+ "total pages: %lu\n"
+ "total free: %lu\n"
+ "idle index: %lu/100\n"
+ "last shrink: %lds\n"
+ "last access: %lds\n"
+ "max pages reached: %lu\n"
+ "grows: %u\n"
+ "grows failure: %u\n"
+ "shrinks: %u\n"
+ "cache access: %lu\n"
+ "cache missing: %lu\n"
+ "low free mark: %lu\n"
+ "max waitqueue depth: %u\n"
+ "max wait time: " CFS_TIME_T "/%u\n",
+ totalram_pages,
+ PAGES_PER_POOL,
+ page_pools.epp_max_pages,
+ page_pools.epp_max_pools,
+ page_pools.epp_total_pages,
+ page_pools.epp_free_pages,
+ page_pools.epp_idle_idx,
+ get_seconds() - page_pools.epp_last_shrink,
+ get_seconds() - page_pools.epp_last_access,
+ page_pools.epp_st_max_pages,
+ page_pools.epp_st_grows,
+ page_pools.epp_st_grow_fails,
+ page_pools.epp_st_shrinks,
+ page_pools.epp_st_access,
+ page_pools.epp_st_missings,
+ page_pools.epp_st_lowfree,
+ page_pools.epp_st_max_wqlen,
+ page_pools.epp_st_max_wait,
+ HZ);
spin_unlock(&page_pools.epp_lock);
- return rc;
+
+ return 0;
}
static void enc_pools_release_free_pages(long npages)
_
Patches currently in -mm which might be from joe@xxxxxxxxxxx are
staging-lustre-convert-return-seq_printf-uses.patch
staging-lustre-convert-seq_-hash-functions-to-return-void.patch
staging-lustre-convert-uses-of-int-rc-=-seq_printf.patch
staging-lustre-convert-remaining-uses-of-=-seq_printf.patch
x86-mtrr-if-remove-use-of-seq_printf-return-value.patch
power-wakeup-remove-use-of-seq_printf-return-value.patch
rtc-remove-use-of-seq_printf-return-value.patch
ipc-remove-use-of-seq_printf-return-value.patch
pxa27x_udc-remove-use-of-seq_printf-return-value.patch
microblaze-mb-remove-use-of-seq_printf-return-value.patch
nios2-cpuinfo-remove-use-of-seq_printf-return-value.patch
arm-plat-pxa-remove-use-of-seq_printf-return-value.patch
openrisc-remove-use-of-seq_printf-return-value.patch
cris-remove-use-of-seq_printf-return-value.patch
mfd-ab8500-debugfs-remove-use-of-seq_printf-return-value.patch
staging-i2o-remove-use-of-seq_printf-return-value.patch
staging-rtl8192x-remove-use-of-seq_printf-return-value.patch
s390-remove-use-of-seq_printf-return-value.patch
i8k-remove-use-of-seq_printf-return-value.patch
watchdog-bcm281xx-remove-use-of-seq_printf-return-value.patch
proc-remove-use-of-seq_printf-return-value.patch
cgroup-remove-use-of-seq_printf-return-value.patch
tracing-remove-use-of-seq_printf-return-value.patch
lru_cache-remove-use-of-seq_printf-return-value.patch
parisc-remove-use-of-seq_printf-return-value.patch
regulator-dbx500-remove-use-of-seq_puts-seq_printf-return-value.patch
mm-utilc-add-kstrimdup.patch
checkpatch-improve-no-space-is-necessary-after-a-cast-test.patch
linux-next.patch
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