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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 21:45:22 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-10 21:45:22 (GMT) |
commit | 7b3480f8b701170c046e1ed362946f5f0d005e13 (patch) | |
tree | bd25e05b4f35699689b485480dddf24f840f80af /fs | |
parent | 1c8106528aa6bf16b3f457de80df1cf7462a49a4 (diff) | |
parent | b60ef99c1164a8ad346cf41f9e71acfffb6d25a6 (diff) | |
download | linux-7b3480f8b701170c046e1ed362946f5f0d005e13.tar.xz |
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.c | 17 | ||||
-rw-r--r-- | fs/jffs2/fs.c | 1 | ||||
-rw-r--r-- | fs/jffs2/readinode.c | 22 | ||||
-rw-r--r-- | fs/jffs2/scan.c | 12 | ||||
-rw-r--r-- | fs/jffs2/super.c | 4 | ||||
-rw-r--r-- | fs/jffs2/wbuf.c | 38 | ||||
-rw-r--r-- | fs/jffs2/writev.c | 32 | ||||
-rw-r--r-- | fs/logfs/dev_mtd.c | 78 | ||||
-rw-r--r-- | fs/romfs/mmap-nommu.c | 28 |
9 files changed, 98 insertions, 134 deletions
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index e513f19..a01cdad 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 4b8afe3..2e01238 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 ee57bac..3093ac4 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 28107ca..f994648 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 8be4925..f2d96b5 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 b09e51d..30e8f47 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 b9276b1..a1bda9d 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 339e17e..e97404d 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 eed9942..e1a7779 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; } /* |