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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 13:45:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 13:45:22 -0800
commit7b3480f8b701170c046e1ed362946f5f0d005e13 (patch)
treebd25e05b4f35699689b485480dddf24f840f80af /fs
parent1c8106528aa6bf16b3f457de80df1cf7462a49a4 (diff)
parentb60ef99c1164a8ad346cf41f9e71acfffb6d25a6 (diff)
Merge tag 'for-linus-3.3' of git://git.infradead.org/mtd-2.6
MTD pull for 3.3 * tag 'for-linus-3.3' of git://git.infradead.org/mtd-2.6: (113 commits) mtd: Fix dependency for MTD_DOC200x mtd: do not use mtd->block_markbad directly logfs: do not use 'mtd->block_isbad' directly mtd: introduce mtd_can_have_bb helper mtd: do not use mtd->suspend and mtd->resume directly mtd: do not use mtd->lock, unlock and is_locked directly mtd: do not use mtd->sync directly mtd: harmonize mtd_writev usage mtd: do not use mtd->lock_user_prot_reg directly mtd: mtd->write_user_prot_reg directly mtd: do not use mtd->read_*_prot_reg directly mtd: do not use mtd->get_*_prot_info directly mtd: do not use mtd->read_oob directly mtd: mtdoops: do not use mtd->panic_write directly romfs: do not use mtd->get_unmapped_area directly mtd: do not use mtd->get_unmapped_area directly mtd: do use mtd->point directly mtd: introduce mtd_has_oob helper mtd: mtdcore: export symbols cleanup mtd: clean-up the default_mtd_writev function ... Fix up trivial edit/remove conflict in drivers/staging/spectra/lld_mtd.c
Diffstat (limited to 'fs')
-rw-r--r--fs/jffs2/erase.c17
-rw-r--r--fs/jffs2/fs.c1
-rw-r--r--fs/jffs2/readinode.c22
-rw-r--r--fs/jffs2/scan.c12
-rw-r--r--fs/jffs2/super.c4
-rw-r--r--fs/jffs2/wbuf.c38
-rw-r--r--fs/jffs2/writev.c32
-rw-r--r--fs/logfs/dev_mtd.c78
-rw-r--r--fs/romfs/mmap-nommu.c28
9 files changed, 98 insertions, 134 deletions
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index e513f1913c1..a01cdad6aad 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -74,7 +74,7 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
((struct erase_priv_struct *)instr->priv)->jeb = jeb;
((struct erase_priv_struct *)instr->priv)->c = c;
- ret = c->mtd->erase(c->mtd, instr);
+ ret = mtd_erase(c->mtd, instr);
if (!ret)
return;
@@ -336,12 +336,11 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
uint32_t ofs;
size_t retlen;
int ret = -EIO;
+ unsigned long *wordebuf;
- if (c->mtd->point) {
- unsigned long *wordebuf;
-
- ret = c->mtd->point(c->mtd, jeb->offset, c->sector_size,
- &retlen, &ebuf, NULL);
+ ret = mtd_point(c->mtd, jeb->offset, c->sector_size, &retlen,
+ &ebuf, NULL);
+ if (ret != -EOPNOTSUPP) {
if (ret) {
D1(printk(KERN_DEBUG "MTD point failed %d\n", ret));
goto do_flash_read;
@@ -349,7 +348,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
if (retlen < c->sector_size) {
/* Don't muck about if it won't let us point to the whole erase sector */
D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", retlen));
- c->mtd->unpoint(c->mtd, jeb->offset, retlen);
+ mtd_unpoint(c->mtd, jeb->offset, retlen);
goto do_flash_read;
}
wordebuf = ebuf-sizeof(*wordebuf);
@@ -358,7 +357,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
if (*++wordebuf != ~0)
break;
} while(--retlen);
- c->mtd->unpoint(c->mtd, jeb->offset, c->sector_size);
+ mtd_unpoint(c->mtd, jeb->offset, c->sector_size);
if (retlen) {
printk(KERN_WARNING "Newly-erased block contained word 0x%lx at offset 0x%08tx\n",
*wordebuf, jeb->offset + c->sector_size-retlen*sizeof(*wordebuf));
@@ -381,7 +380,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
*bad_offset = ofs;
- ret = c->mtd->read(c->mtd, ofs, readlen, &retlen, ebuf);
+ ret = mtd_read(c->mtd, ofs, readlen, &retlen, ebuf);
if (ret) {
printk(KERN_WARNING "Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n", ofs, ret);
ret = -EIO;
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 4b8afe39a87..2e0123867cb 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -466,7 +466,6 @@ struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_r
if (insert_inode_locked(inode) < 0) {
make_bad_inode(inode);
- unlock_new_inode(inode);
iput(inode);
return ERR_PTR(-EINVAL);
}
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index ee57bac1ba6..3093ac4fb24 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -62,17 +62,15 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
#ifndef __ECOS
/* TODO: instead, incapsulate point() stuff to jffs2_flash_read(),
* adding and jffs2_flash_read_end() interface. */
- if (c->mtd->point) {
- err = c->mtd->point(c->mtd, ofs, len, &retlen,
- (void **)&buffer, NULL);
- if (!err && retlen < len) {
- JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
- c->mtd->unpoint(c->mtd, ofs, retlen);
- } else if (err)
+ err = mtd_point(c->mtd, ofs, len, &retlen, (void **)&buffer, NULL);
+ if (!err && retlen < len) {
+ JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
+ mtd_unpoint(c->mtd, ofs, retlen);
+ } else if (err) {
+ if (err != -EOPNOTSUPP)
JFFS2_WARNING("MTD point failed: error code %d.\n", err);
- else
- pointed = 1; /* succefully pointed to device */
- }
+ } else
+ pointed = 1; /* succefully pointed to device */
#endif
if (!pointed) {
@@ -101,7 +99,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
kfree(buffer);
#ifndef __ECOS
else
- c->mtd->unpoint(c->mtd, ofs, len);
+ mtd_unpoint(c->mtd, ofs, len);
#endif
if (crc != tn->data_crc) {
@@ -137,7 +135,7 @@ free_out:
kfree(buffer);
#ifndef __ECOS
else
- c->mtd->unpoint(c->mtd, ofs, len);
+ mtd_unpoint(c->mtd, ofs, len);
#endif
return err;
}
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 28107ca136e..f99464833bb 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -97,15 +97,15 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
size_t pointlen, try_size;
if (c->mtd->point) {
- ret = c->mtd->point(c->mtd, 0, c->mtd->size, &pointlen,
- (void **)&flashbuf, NULL);
+ ret = mtd_point(c->mtd, 0, c->mtd->size, &pointlen,
+ (void **)&flashbuf, NULL);
if (!ret && pointlen < c->mtd->size) {
/* Don't muck about if it won't let us point to the whole flash */
D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", pointlen));
- c->mtd->unpoint(c->mtd, 0, pointlen);
+ mtd_unpoint(c->mtd, 0, pointlen);
flashbuf = NULL;
}
- if (ret)
+ if (ret && ret != -EOPNOTSUPP)
D1(printk(KERN_DEBUG "MTD point failed %d\n", ret));
}
#endif
@@ -273,7 +273,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
kfree(flashbuf);
#ifndef __ECOS
else
- c->mtd->unpoint(c->mtd, 0, c->mtd->size);
+ mtd_unpoint(c->mtd, 0, c->mtd->size);
#endif
kfree(s);
return ret;
@@ -455,7 +455,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
if (jffs2_cleanmarker_oob(c)) {
int ret;
- if (c->mtd->block_isbad(c->mtd, jeb->offset))
+ if (mtd_block_isbad(c->mtd, jeb->offset))
return BLK_STATE_BADBLOCK;
ret = jffs2_check_nand_cleanmarker(c, jeb);
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 8be4925296c..f2d96b5e64f 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -335,9 +335,7 @@ static void jffs2_put_super (struct super_block *sb)
jffs2_flash_cleanup(c);
kfree(c->inocache_list);
jffs2_clear_xattr_subsystem(c);
- if (c->mtd->sync)
- c->mtd->sync(c->mtd);
-
+ mtd_sync(c->mtd);
D1(printk(KERN_DEBUG "jffs2_put_super returning\n"));
}
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index b09e51d2f81..30e8f47e8a2 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -228,7 +228,7 @@ static int jffs2_verify_write(struct jffs2_sb_info *c, unsigned char *buf,
size_t retlen;
char *eccstr;
- ret = c->mtd->read(c->mtd, ofs, c->wbuf_pagesize, &retlen, c->wbuf_verify);
+ ret = mtd_read(c->mtd, ofs, c->wbuf_pagesize, &retlen, c->wbuf_verify);
if (ret && ret != -EUCLEAN && ret != -EBADMSG) {
printk(KERN_WARNING "jffs2_verify_write(): Read back of page at %08x failed: %d\n", c->wbuf_ofs, ret);
return ret;
@@ -337,7 +337,8 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
}
/* Do the read... */
- ret = c->mtd->read(c->mtd, start, c->wbuf_ofs - start, &retlen, buf);
+ ret = mtd_read(c->mtd, start, c->wbuf_ofs - start, &retlen,
+ buf);
/* ECC recovered ? */
if ((ret == -EUCLEAN || ret == -EBADMSG) &&
@@ -413,13 +414,12 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
if (breakme++ == 20) {
printk(KERN_NOTICE "Faking write error at 0x%08x\n", ofs);
breakme = 0;
- c->mtd->write(c->mtd, ofs, towrite, &retlen,
- brokenbuf);
+ mtd_write(c->mtd, ofs, towrite, &retlen, brokenbuf);
ret = -EIO;
} else
#endif
- ret = c->mtd->write(c->mtd, ofs, towrite, &retlen,
- rewrite_buf);
+ ret = mtd_write(c->mtd, ofs, towrite, &retlen,
+ rewrite_buf);
if (ret || retlen != towrite || jffs2_verify_write(c, rewrite_buf, ofs)) {
/* Argh. We tried. Really we did. */
@@ -619,13 +619,14 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
if (breakme++ == 20) {
printk(KERN_NOTICE "Faking write error at 0x%08x\n", c->wbuf_ofs);
breakme = 0;
- c->mtd->write(c->mtd, c->wbuf_ofs, c->wbuf_pagesize, &retlen,
- brokenbuf);
+ mtd_write(c->mtd, c->wbuf_ofs, c->wbuf_pagesize, &retlen,
+ brokenbuf);
ret = -EIO;
} else
#endif
- ret = c->mtd->write(c->mtd, c->wbuf_ofs, c->wbuf_pagesize, &retlen, c->wbuf);
+ ret = mtd_write(c->mtd, c->wbuf_ofs, c->wbuf_pagesize,
+ &retlen, c->wbuf);
if (ret) {
printk(KERN_WARNING "jffs2_flush_wbuf(): Write failed with %d\n", ret);
@@ -861,8 +862,8 @@ int jffs2_flash_writev(struct jffs2_sb_info *c, const struct kvec *invecs,
v += wbuf_retlen;
if (vlen >= c->wbuf_pagesize) {
- ret = c->mtd->write(c->mtd, outvec_to, PAGE_DIV(vlen),
- &wbuf_retlen, v);
+ ret = mtd_write(c->mtd, outvec_to, PAGE_DIV(vlen),
+ &wbuf_retlen, v);
if (ret < 0 || wbuf_retlen != PAGE_DIV(vlen))
goto outfile;
@@ -948,11 +949,11 @@ int jffs2_flash_read(struct jffs2_sb_info *c, loff_t ofs, size_t len, size_t *re
int ret;
if (!jffs2_is_writebuffered(c))
- return c->mtd->read(c->mtd, ofs, len, retlen, buf);
+ return mtd_read(c->mtd, ofs, len, retlen, buf);
/* Read flash */
down_read(&c->wbuf_sem);
- ret = c->mtd->read(c->mtd, ofs, len, retlen, buf);
+ ret = mtd_read(c->mtd, ofs, len, retlen, buf);
if ( (ret == -EBADMSG || ret == -EUCLEAN) && (*retlen == len) ) {
if (ret == -EBADMSG)
@@ -1031,7 +1032,7 @@ int jffs2_check_oob_empty(struct jffs2_sb_info *c,
ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0;
ops.datbuf = NULL;
- ret = c->mtd->read_oob(c->mtd, jeb->offset, &ops);
+ ret = mtd_read_oob(c->mtd, jeb->offset, &ops);
if (ret || ops.oobretlen != ops.ooblen) {
printk(KERN_ERR "cannot read OOB for EB at %08x, requested %zd"
" bytes, read %zd bytes, error %d\n",
@@ -1074,7 +1075,7 @@ int jffs2_check_nand_cleanmarker(struct jffs2_sb_info *c,
ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0;
ops.datbuf = NULL;
- ret = c->mtd->read_oob(c->mtd, jeb->offset, &ops);
+ ret = mtd_read_oob(c->mtd, jeb->offset, &ops);
if (ret || ops.oobretlen != ops.ooblen) {
printk(KERN_ERR "cannot read OOB for EB at %08x, requested %zd"
" bytes, read %zd bytes, error %d\n",
@@ -1100,7 +1101,7 @@ int jffs2_write_nand_cleanmarker(struct jffs2_sb_info *c,
ops.len = ops.ooboffs = ops.retlen = ops.oobretlen = 0;
ops.datbuf = NULL;
- ret = c->mtd->write_oob(c->mtd, jeb->offset, &ops);
+ ret = mtd_write_oob(c->mtd, jeb->offset, &ops);
if (ret || ops.oobretlen != ops.ooblen) {
printk(KERN_ERR "cannot write OOB for EB at %08x, requested %zd"
" bytes, read %zd bytes, error %d\n",
@@ -1129,11 +1130,8 @@ int jffs2_write_nand_badblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *
if( ++jeb->bad_count < MAX_ERASE_FAILURES)
return 0;
- if (!c->mtd->block_markbad)
- return 1; // What else can we do?
-
printk(KERN_WARNING "JFFS2: marking eraseblock at %08x\n as bad", bad_offset);
- ret = c->mtd->block_markbad(c->mtd, bad_offset);
+ ret = mtd_block_markbad(c->mtd, bad_offset);
if (ret) {
D1(printk(KERN_WARNING "jffs2_write_nand_badblock(): Write failed for block at %08x: error %d\n", jeb->offset, ret));
diff --git a/fs/jffs2/writev.c b/fs/jffs2/writev.c
index b9276b11bac..a1bda9dab3f 100644
--- a/fs/jffs2/writev.c
+++ b/fs/jffs2/writev.c
@@ -13,30 +13,6 @@
#include <linux/mtd/mtd.h>
#include "nodelist.h"
-/* This ought to be in core MTD code. All registered MTD devices
- without writev should have this put in place. Bug the MTD
- maintainer */
-static inline int mtd_fake_writev(struct mtd_info *mtd, const struct kvec *vecs,
- unsigned long count, loff_t to, size_t *retlen)
-{
- unsigned long i;
- size_t totlen = 0, thislen;
- int ret = 0;
-
- for (i=0; i<count; i++) {
- if (!vecs[i].iov_len)
- continue;
- ret = mtd->write(mtd, to, vecs[i].iov_len, &thislen, vecs[i].iov_base);
- totlen += thislen;
- if (ret || thislen != vecs[i].iov_len)
- break;
- to += vecs[i].iov_len;
- }
- if (retlen)
- *retlen = totlen;
- return ret;
-}
-
int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
unsigned long count, loff_t to, size_t *retlen)
{
@@ -50,18 +26,14 @@ int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
}
}
- if (c->mtd->writev)
- return c->mtd->writev(c->mtd, vecs, count, to, retlen);
- else {
- return mtd_fake_writev(c->mtd, vecs, count, to, retlen);
- }
+ return mtd_writev(c->mtd, vecs, count, to, retlen);
}
int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
size_t *retlen, const u_char *buf)
{
int ret;
- ret = c->mtd->write(c->mtd, ofs, len, retlen, buf);
+ ret = mtd_write(c->mtd, ofs, len, retlen, buf);
if (jffs2_sum_active()) {
struct kvec vecs[1];
diff --git a/fs/logfs/dev_mtd.c b/fs/logfs/dev_mtd.c
index 339e17e9133..e97404d611e 100644
--- a/fs/logfs/dev_mtd.c
+++ b/fs/logfs/dev_mtd.c
@@ -13,13 +13,14 @@
#define PAGE_OFS(ofs) ((ofs) & (PAGE_SIZE-1))
-static int mtd_read(struct super_block *sb, loff_t ofs, size_t len, void *buf)
+static int logfs_mtd_read(struct super_block *sb, loff_t ofs, size_t len,
+ void *buf)
{
struct mtd_info *mtd = logfs_super(sb)->s_mtd;
size_t retlen;
int ret;
- ret = mtd->read(mtd, ofs, len, &retlen, buf);
+ ret = mtd_read(mtd, ofs, len, &retlen, buf);
BUG_ON(ret == -EINVAL);
if (ret)
return ret;
@@ -31,7 +32,8 @@ static int mtd_read(struct super_block *sb, loff_t ofs, size_t len, void *buf)
return 0;
}
-static int mtd_write(struct super_block *sb, loff_t ofs, size_t len, void *buf)
+static int loffs_mtd_write(struct super_block *sb, loff_t ofs, size_t len,
+ void *buf)
{
struct logfs_super *super = logfs_super(sb);
struct mtd_info *mtd = super->s_mtd;
@@ -47,7 +49,7 @@ static int mtd_write(struct super_block *sb, loff_t ofs, size_t len, void *buf)
BUG_ON(len > PAGE_CACHE_SIZE);
page_start = ofs & PAGE_CACHE_MASK;
page_end = PAGE_CACHE_ALIGN(ofs + len) - 1;
- ret = mtd->write(mtd, ofs, len, &retlen, buf);
+ ret = mtd_write(mtd, ofs, len, &retlen, buf);
if (ret || (retlen != len))
return -EIO;
@@ -60,14 +62,15 @@ static int mtd_write(struct super_block *sb, loff_t ofs, size_t len, void *buf)
* asynchronous properties. So just to prevent the first implementor of such
* a thing from breaking logfs in 2350, we do the usual pointless dance to
* declare a completion variable and wait for completion before returning
- * from mtd_erase(). What an exercise in futility!
+ * from logfs_mtd_erase(). What an exercise in futility!
*/
static void logfs_erase_callback(struct erase_info *ei)
{
complete((struct completion *)ei->priv);
}
-static int mtd_erase_mapping(struct super_block *sb, loff_t ofs, size_t len)
+static int logfs_mtd_erase_mapping(struct super_block *sb, loff_t ofs,
+ size_t len)
{
struct logfs_super *super = logfs_super(sb);
struct address_space *mapping = super->s_mapping_inode->i_mapping;
@@ -84,7 +87,7 @@ static int mtd_erase_mapping(struct super_block *sb, loff_t ofs, size_t len)
return 0;
}
-static int mtd_erase(struct super_block *sb, loff_t ofs, size_t len,
+static int logfs_mtd_erase(struct super_block *sb, loff_t ofs, size_t len,
int ensure_write)
{
struct mtd_info *mtd = logfs_super(sb)->s_mtd;
@@ -102,30 +105,29 @@ static int mtd_erase(struct super_block *sb, loff_t ofs, size_t len,
ei.len = len;
ei.callback = logfs_erase_callback;
ei.priv = (long)&complete;
- ret = mtd->erase(mtd, &ei);
+ ret = mtd_erase(mtd, &ei);
if (ret)
return -EIO;
wait_for_completion(&complete);
if (ei.state != MTD_ERASE_DONE)
return -EIO;
- return mtd_erase_mapping(sb, ofs, len);
+ return logfs_mtd_erase_mapping(sb, ofs, len);
}
-static void mtd_sync(struct super_block *sb)
+static void logfs_mtd_sync(struct super_block *sb)
{
struct mtd_info *mtd = logfs_super(sb)->s_mtd;
- if (mtd->sync)
- mtd->sync(mtd);
+ mtd_sync(mtd);
}
-static int mtd_readpage(void *_sb, struct page *page)
+static int logfs_mtd_readpage(void *_sb, struct page *page)
{
struct super_block *sb = _sb;
int err;
- err = mtd_read(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
+ err = logfs_mtd_read(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
page_address(page));
if (err == -EUCLEAN || err == -EBADMSG) {
/* -EBADMSG happens regularly on power failures */
@@ -143,18 +145,18 @@ static int mtd_readpage(void *_sb, struct page *page)
return err;
}
-static struct page *mtd_find_first_sb(struct super_block *sb, u64 *ofs)
+static struct page *logfs_mtd_find_first_sb(struct super_block *sb, u64 *ofs)
{
struct logfs_super *super = logfs_super(sb);
struct address_space *mapping = super->s_mapping_inode->i_mapping;
- filler_t *filler = mtd_readpage;
+ filler_t *filler = logfs_mtd_readpage;
struct mtd_info *mtd = super->s_mtd;
- if (!mtd->block_isbad)
+ if (!mtd_can_have_bb(mtd))
return NULL;
*ofs = 0;
- while (mtd->block_isbad(mtd, *ofs)) {
+ while (mtd_block_isbad(mtd, *ofs)) {
*ofs += mtd->erasesize;
if (*ofs >= mtd->size)
return NULL;
@@ -163,18 +165,18 @@ static struct page *mtd_find_first_sb(struct super_block *sb, u64 *ofs)
return read_cache_page(mapping, *ofs >> PAGE_SHIFT, filler, sb);
}
-static struct page *mtd_find_last_sb(struct super_block *sb, u64 *ofs)
+static struct page *logfs_mtd_find_last_sb(struct super_block *sb, u64 *ofs)
{
struct logfs_super *super = logfs_super(sb);
struct address_space *mapping = super->s_mapping_inode->i_mapping;
- filler_t *filler = mtd_readpage;
+ filler_t *filler = logfs_mtd_readpage;
struct mtd_info *mtd = super->s_mtd;
- if (!mtd->block_isbad)
+ if (!mtd_can_have_bb(mtd))
return NULL;
*ofs = mtd->size - mtd->erasesize;
- while (mtd->block_isbad(mtd, *ofs)) {
+ while (mtd_block_isbad(mtd, *ofs)) {
*ofs -= mtd->erasesize;
if (*ofs <= 0)
return NULL;
@@ -184,7 +186,7 @@ static struct page *mtd_find_last_sb(struct super_block *sb, u64 *ofs)
return read_cache_page(mapping, *ofs >> PAGE_SHIFT, filler, sb);
}
-static int __mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
+static int __logfs_mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
size_t nr_pages)
{
struct logfs_super *super = logfs_super(sb);
@@ -196,8 +198,8 @@ static int __mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
page = find_lock_page(mapping, index + i);
BUG_ON(!page);
- err = mtd_write(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
- page_address(page));
+ err = loffs_mtd_write(sb, page->index << PAGE_SHIFT, PAGE_SIZE,
+ page_address(page));
unlock_page(page);
page_cache_release(page);
if (err)
@@ -206,7 +208,7 @@ static int __mtd_writeseg(struct super_block *sb, u64 ofs, pgoff_t index,
return 0;
}
-static void mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
+static void logfs_mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
{
struct logfs_super *super = logfs_super(sb);
int head;
@@ -227,15 +229,15 @@ static void mtd_writeseg(struct super_block *sb, u64 ofs, size_t len)
len += head;
}
len = PAGE_ALIGN(len);
- __mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);
+ __logfs_mtd_writeseg(sb, ofs, ofs >> PAGE_SHIFT, len >> PAGE_SHIFT);
}
-static void mtd_put_device(struct logfs_super *s)
+static void logfs_mtd_put_device(struct logfs_super *s)
{
put_mtd_device(s->s_mtd);
}
-static int mtd_can_write_buf(struct super_block *sb, u64 ofs)
+static int logfs_mtd_can_write_buf(struct super_block *sb, u64 ofs)
{
struct logfs_super *super = logfs_super(sb);
void *buf;
@@ -244,7 +246,7 @@ static int mtd_can_write_buf(struct super_block *sb, u64 ofs)
buf = kmalloc(super->s_writesize, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- err = mtd_read(sb, ofs, super->s_writesize, buf);
+ err = logfs_mtd_read(sb, ofs, super->s_writesize, buf);
if (err)
goto out;
if (memchr_inv(buf, 0xff, super->s_writesize))
@@ -255,14 +257,14 @@ out:
}
static const struct logfs_device_ops mtd_devops = {
- .find_first_sb = mtd_find_first_sb,
- .find_last_sb = mtd_find_last_sb,
- .readpage = mtd_readpage,
- .writeseg = mtd_writeseg,
- .erase = mtd_erase,
- .can_write_buf = mtd_can_write_buf,
- .sync = mtd_sync,
- .put_device = mtd_put_device,
+ .find_first_sb = logfs_mtd_find_first_sb,
+ .find_last_sb = logfs_mtd_find_last_sb,
+ .readpage = logfs_mtd_readpage,
+ .writeseg = logfs_mtd_writeseg,
+ .erase = logfs_mtd_erase,
+ .can_write_buf = logfs_mtd_can_write_buf,
+ .sync = logfs_mtd_sync,
+ .put_device = logfs_mtd_put_device,
};
int logfs_get_sb_mtd(struct logfs_super *s, int mtdnr)
diff --git a/fs/romfs/mmap-nommu.c b/fs/romfs/mmap-nommu.c
index eed99428f10..e1a7779dd3c 100644
--- a/fs/romfs/mmap-nommu.c
+++ b/fs/romfs/mmap-nommu.c
@@ -28,9 +28,10 @@ static unsigned long romfs_get_unmapped_area(struct file *file,
struct inode *inode = file->f_mapping->host;
struct mtd_info *mtd = inode->i_sb->s_mtd;
unsigned long isize, offset, maxpages, lpages;
+ int ret;
if (!mtd)
- goto cant_map_directly;
+ return (unsigned long) -ENOSYS;
/* the mapping mustn't extend beyond the EOF */
lpages = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
@@ -41,23 +42,20 @@ static unsigned long romfs_get_unmapped_area(struct file *file,
if ((pgoff >= maxpages) || (maxpages - pgoff < lpages))
return (unsigned long) -EINVAL;
- /* we need to call down to the MTD layer to do the actual mapping */
- if (mtd->get_unmapped_area) {
- if (addr != 0)
- return (unsigned long) -EINVAL;
-
- if (len > mtd->size || pgoff >= (mtd->size >> PAGE_SHIFT))
- return (unsigned long) -EINVAL;
+ if (addr != 0)
+ return (unsigned long) -EINVAL;
- offset += ROMFS_I(inode)->i_dataoffset;
- if (offset > mtd->size - len)
- return (unsigned long) -EINVAL;
+ if (len > mtd->size || pgoff >= (mtd->size >> PAGE_SHIFT))
+ return (unsigned long) -EINVAL;
- return mtd->get_unmapped_area(mtd, len, offset, flags);
- }
+ offset += ROMFS_I(inode)->i_dataoffset;
+ if (offset > mtd->size - len)
+ return (unsigned long) -EINVAL;
-cant_map_directly:
- return (unsigned long) -ENOSYS;
+ ret = mtd_get_unmapped_area(mtd, len, offset, flags);
+ if (ret == -EOPNOTSUPP)
+ ret = -ENOSYS;
+ return (unsigned long) ret;
}
/*