diff options
| -rw-r--r-- | fs/ufs/balloc.c | 22 | ||||
| -rw-r--r-- | fs/ufs/inode.c | 47 | ||||
| -rw-r--r-- | fs/ufs/super.c | 64 | ||||
| -rw-r--r-- | fs/ufs/ufs_fs.h | 7 | ||||
| -rw-r--r-- | fs/ufs/util.c | 17 | ||||
| -rw-r--r-- | fs/ufs/util.h | 9 |
6 files changed, 98 insertions, 68 deletions
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index d642cc0a8271..0315fea1d589 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -400,10 +400,12 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, /* * There is not enough space for user on the device */ - if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) { - mutex_unlock(&UFS_SB(sb)->s_lock); - UFSD("EXIT (FAILED)\n"); - return 0; + if (unlikely(ufs_freefrags(uspi) <= uspi->s_root_blocks)) { + if (!capable(CAP_SYS_RESOURCE)) { + mutex_unlock(&UFS_SB(sb)->s_lock); + UFSD("EXIT (FAILED)\n"); + return 0; + } } if (goal >= uspi->s_size) @@ -421,12 +423,12 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, if (result) { ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); + *err = 0; write_seqlock(&UFS_I(inode)->meta_lock); ufs_cpu_to_data_ptr(sb, p, result); - write_sequnlock(&UFS_I(inode)->meta_lock); - *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); + write_sequnlock(&UFS_I(inode)->meta_lock); } mutex_unlock(&UFS_SB(sb)->s_lock); UFSD("EXIT, result %llu\n", (unsigned long long)result); @@ -439,8 +441,10 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, result = ufs_add_fragments(inode, tmp, oldcount, newcount); if (result) { *err = 0; + read_seqlock_excl(&UFS_I(inode)->meta_lock); UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); + read_sequnlock_excl(&UFS_I(inode)->meta_lock); ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); mutex_unlock(&UFS_SB(sb)->s_lock); @@ -474,16 +478,16 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, if (result) { ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); + mutex_unlock(&UFS_SB(sb)->s_lock); ufs_change_blocknr(inode, fragment - oldcount, oldcount, uspi->s_sbbase + tmp, uspi->s_sbbase + result, locked_page); + *err = 0; write_seqlock(&UFS_I(inode)->meta_lock); ufs_cpu_to_data_ptr(sb, p, result); - write_sequnlock(&UFS_I(inode)->meta_lock); - *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); - mutex_unlock(&UFS_SB(sb)->s_lock); + write_sequnlock(&UFS_I(inode)->meta_lock); if (newcount < request) ufs_free_fragments (inode, result + newcount, request - newcount); ufs_free_fragments (inode, tmp, oldcount); diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index da553ffec85b..9f4590261134 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -401,13 +401,20 @@ static int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buff u64 phys64 = 0; unsigned frag = fragment & uspi->s_fpbmask; - if (!create) { - phys64 = ufs_frag_map(inode, offsets, depth); - if (phys64) - map_bh(bh_result, sb, phys64 + frag); - return 0; - } + phys64 = ufs_frag_map(inode, offsets, depth); + if (!create) + goto done; + if (phys64) { + if (fragment >= UFS_NDIR_FRAGMENT) + goto done; + read_seqlock_excl(&UFS_I(inode)->meta_lock); + if (fragment < UFS_I(inode)->i_lastfrag) { + read_sequnlock_excl(&UFS_I(inode)->meta_lock); + goto done; + } + read_sequnlock_excl(&UFS_I(inode)->meta_lock); + } /* This code entered only while writing ....? */ mutex_lock(&UFS_I(inode)->truncate_mutex); @@ -451,6 +458,11 @@ out: } mutex_unlock(&UFS_I(inode)->truncate_mutex); return err; + +done: + if (phys64) + map_bh(bh_result, sb, phys64 + frag); + return 0; } static int ufs_writepage(struct page *page, struct writeback_control *wbc) @@ -874,7 +886,6 @@ static inline void free_data(struct to_free *ctx, u64 from, unsigned count) ctx->to = from + count; } -#define DIRECT_BLOCK ((inode->i_size + uspi->s_bsize - 1) >> uspi->s_bshift) #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) static void ufs_trunc_direct(struct inode *inode) @@ -1112,19 +1123,24 @@ static void ufs_truncate_blocks(struct inode *inode) struct super_block *sb = inode->i_sb; struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; unsigned offsets[4]; - int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); + int depth; int depth2; unsigned i; struct ufs_buffer_head *ubh[3]; void *p; u64 block; - if (!depth) - return; + if (inode->i_size) { + sector_t last = (inode->i_size - 1) >> uspi->s_bshift; + depth = ufs_block_to_path(inode, last, offsets); + if (!depth) + return; + } else { + depth = 1; + } - /* find the last non-zero in offsets[] */ for (depth2 = depth - 1; depth2; depth2--) - if (offsets[depth2]) + if (offsets[depth2] != uspi->s_apb - 1) break; mutex_lock(&ufsi->truncate_mutex); @@ -1133,9 +1149,8 @@ static void ufs_truncate_blocks(struct inode *inode) offsets[0] = UFS_IND_BLOCK; } else { /* get the blocks that should be partially emptied */ - p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]); + p = ufs_get_direct_data_ptr(uspi, ufsi, offsets[0]++); for (i = 0; i < depth2; i++) { - offsets[i]++; /* next branch is fully freed */ block = ufs_data_ptr_to_cpu(sb, p); if (!block) break; @@ -1146,7 +1161,7 @@ static void ufs_truncate_blocks(struct inode *inode) write_sequnlock(&ufsi->meta_lock); break; } - p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]); + p = ubh_get_data_ptr(uspi, ubh[i], offsets[i + 1]++); } while (i--) free_branch_tail(inode, offsets[i + 1], ubh[i], depth - i - 1); @@ -1161,7 +1176,9 @@ static void ufs_truncate_blocks(struct inode *inode) free_full_branch(inode, block, i - UFS_IND_BLOCK + 1); } } + read_seqlock_excl(&ufsi->meta_lock); ufsi->i_lastfrag = DIRECT_FRAGMENT; + read_sequnlock_excl(&ufsi->meta_lock); mark_inode_dirty(inode); mutex_unlock(&ufsi->truncate_mutex); } diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 878cc6264f1a..d5300adbfd79 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -480,7 +480,7 @@ static void ufs_setup_cstotal(struct super_block *sb) usb3 = ubh_get_usb_third(uspi); if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && - (usb1->fs_flags & UFS_FLAGS_UPDATED)) || + (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) || mtype == UFS_MOUNT_UFSTYPE_UFS2) { /*we have statistic in different place, then usual*/ uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); @@ -596,9 +596,7 @@ static void ufs_put_cstotal(struct super_block *sb) usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); - if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && - (usb1->fs_flags & UFS_FLAGS_UPDATED)) || - mtype == UFS_MOUNT_UFSTYPE_UFS2) { + if (mtype == UFS_MOUNT_UFSTYPE_UFS2) { /*we have statistic in different place, then usual*/ usb2->fs_un.fs_u2.cs_ndir = cpu_to_fs64(sb, uspi->cs_total.cs_ndir); @@ -608,16 +606,26 @@ static void ufs_put_cstotal(struct super_block *sb) cpu_to_fs64(sb, uspi->cs_total.cs_nifree); usb3->fs_un1.fs_u2.cs_nffree = cpu_to_fs64(sb, uspi->cs_total.cs_nffree); - } else { - usb1->fs_cstotal.cs_ndir = - cpu_to_fs32(sb, uspi->cs_total.cs_ndir); - usb1->fs_cstotal.cs_nbfree = - cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); - usb1->fs_cstotal.cs_nifree = - cpu_to_fs32(sb, uspi->cs_total.cs_nifree); - usb1->fs_cstotal.cs_nffree = - cpu_to_fs32(sb, uspi->cs_total.cs_nffree); + goto out; + } + + if (mtype == UFS_MOUNT_UFSTYPE_44BSD && + (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) { + /* store stats in both old and new places */ + usb2->fs_un.fs_u2.cs_ndir = + cpu_to_fs64(sb, uspi->cs_total.cs_ndir); + usb2->fs_un.fs_u2.cs_nbfree = + cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); + usb3->fs_un1.fs_u2.cs_nifree = + cpu_to_fs64(sb, uspi->cs_total.cs_nifree); + usb3->fs_un1.fs_u2.cs_nffree = + cpu_to_fs64(sb, uspi->cs_total.cs_nffree); } + usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir); + usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); + usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree); + usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree); +out: ubh_mark_buffer_dirty(USPI_UBH(uspi)); ufs_print_super_stuff(sb, usb1, usb2, usb3); UFSD("EXIT\n"); @@ -996,6 +1004,13 @@ again: flags |= UFS_ST_SUN; } + if ((flags & UFS_ST_MASK) == UFS_ST_44BSD && + uspi->s_postblformat == UFS_42POSTBLFMT) { + if (!silent) + pr_err("this is not a 44bsd filesystem"); + goto failed; + } + /* * Check ufs magic number */ @@ -1143,8 +1158,8 @@ magic_found: uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { - uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); - uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); + uspi->s_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); + uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); } else { uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); @@ -1193,6 +1208,9 @@ magic_found: uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); + uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize, + uspi->s_minfree, 100); + /* * Compute another frequently used values */ @@ -1382,19 +1400,17 @@ static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) mutex_lock(&UFS_SB(sb)->s_lock); usb3 = ubh_get_usb_third(uspi); - if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { + if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) buf->f_type = UFS2_MAGIC; - buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); - } else { + else buf->f_type = UFS_MAGIC; - buf->f_blocks = uspi->s_dsize; - } - buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + - uspi->cs_total.cs_nffree; + + buf->f_blocks = uspi->s_dsize; + buf->f_bfree = ufs_freefrags(uspi); buf->f_ffree = uspi->cs_total.cs_nifree; buf->f_bsize = sb->s_blocksize; - buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) - ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; + buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks) + ? (buf->f_bfree - uspi->s_root_blocks) : 0; buf->f_files = uspi->s_ncg * uspi->s_ipg; buf->f_namelen = UFS_MAXNAMLEN; buf->f_fsid.val[0] = (u32)id; diff --git a/fs/ufs/ufs_fs.h b/fs/ufs/ufs_fs.h index 0cbd5d340b67..823d55a37586 100644 --- a/fs/ufs/ufs_fs.h +++ b/fs/ufs/ufs_fs.h @@ -733,10 +733,8 @@ struct ufs_sb_private_info { __u32 s_dblkno; /* offset of first data after cg */ __u32 s_cgoffset; /* cylinder group offset in cylinder */ __u32 s_cgmask; /* used to calc mod fs_ntrak */ - __u32 s_size; /* number of blocks (fragments) in fs */ - __u32 s_dsize; /* number of data blocks in fs */ - __u64 s_u2_size; /* ufs2: number of blocks (fragments) in fs */ - __u64 s_u2_dsize; /*ufs2: number of data blocks in fs */ + __u64 s_size; /* number of blocks (fragments) in fs */ + __u64 s_dsize; /* number of data blocks in fs */ __u32 s_ncg; /* number of cylinder groups */ __u32 s_bsize; /* size of basic blocks */ __u32 s_fsize; /* size of fragments */ @@ -793,6 +791,7 @@ struct ufs_sb_private_info { __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ __s32 fs_magic; /* filesystem magic */ unsigned int s_dirblksize; + __u64 s_root_blocks; }; /* diff --git a/fs/ufs/util.c b/fs/ufs/util.c index f41ad0a6106f..02497a492eb2 100644 --- a/fs/ufs/util.c +++ b/fs/ufs/util.c @@ -243,9 +243,8 @@ ufs_set_inode_dev(struct super_block *sb, struct ufs_inode_info *ufsi, dev_t dev struct page *ufs_get_locked_page(struct address_space *mapping, pgoff_t index) { - struct page *page; - - page = find_lock_page(mapping, index); + struct inode *inode = mapping->host; + struct page *page = find_lock_page(mapping, index); if (!page) { page = read_mapping_page(mapping, index, NULL); @@ -253,7 +252,7 @@ struct page *ufs_get_locked_page(struct address_space *mapping, printk(KERN_ERR "ufs_change_blocknr: " "read_mapping_page error: ino %lu, index: %lu\n", mapping->host->i_ino, index); - goto out; + return page; } lock_page(page); @@ -262,8 +261,7 @@ struct page *ufs_get_locked_page(struct address_space *mapping, /* Truncate got there first */ unlock_page(page); put_page(page); - page = NULL; - goto out; + return NULL; } if (!PageUptodate(page) || PageError(page)) { @@ -272,11 +270,12 @@ struct page *ufs_get_locked_page(struct address_space *mapping, printk(KERN_ERR "ufs_change_blocknr: " "can not read page: ino %lu, index: %lu\n", - mapping->host->i_ino, index); + inode->i_ino, index); - page = ERR_PTR(-EIO); + return ERR_PTR(-EIO); } } -out: + if (!page_has_buffers(page)) + create_empty_buffers(page, 1 << inode->i_blkbits, 0); return page; } diff --git a/fs/ufs/util.h b/fs/ufs/util.h index 398019fb1448..9fc7119a1551 100644 --- a/fs/ufs/util.h +++ b/fs/ufs/util.h @@ -350,16 +350,11 @@ static inline void *ubh_get_data_ptr(struct ufs_sb_private_info *uspi, #define ubh_blkmap(ubh,begin,bit) \ ((*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) >> ((bit) & 7)) & (0xff >> (UFS_MAXFRAG - uspi->s_fpb))) -/* - * Determine the number of available frags given a - * percentage to hold in reserve. - */ static inline u64 -ufs_freespace(struct ufs_sb_private_info *uspi, int percentreserved) +ufs_freefrags(struct ufs_sb_private_info *uspi) { return ufs_blkstofrags(uspi->cs_total.cs_nbfree) + - uspi->cs_total.cs_nffree - - (uspi->s_dsize * (percentreserved) / 100); + uspi->cs_total.cs_nffree; } /* |