diff options
author | Kumar Gala <galak@kernel.crashing.org> | 2007-02-12 23:57:21 -0600 |
---|---|---|
committer | Kumar Gala <galak@kernel.crashing.org> | 2007-02-12 23:57:21 -0600 |
commit | 54c66f6d781e03dc0b23956234963c4911e6d1c0 (patch) | |
tree | 40619a66ae6d8703a57bf681d087ffeabbffd346 /fs/ufs/truncate.c | |
parent | 8ce0a7df6e6117d8814e976d4b7ce6a6b2c9cf93 (diff) | |
parent | 17e0e27020d028a790d97699aff85a43af5be472 (diff) |
Merge branch 'master' into 85xx
Diffstat (limited to 'fs/ufs/truncate.c')
-rw-r--r-- | fs/ufs/truncate.c | 141 |
1 files changed, 76 insertions, 65 deletions
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c index 0437b0a6fe9..749581fa772 100644 --- a/fs/ufs/truncate.c +++ b/fs/ufs/truncate.c @@ -30,8 +30,8 @@ */ /* - * Modified to avoid infinite loop on 2006 by - * Evgeniy Dushistov <dushistov@mail.ru> + * Adoptation to use page cache and UFS2 write support by + * Evgeniy Dushistov <dushistov@mail.ru>, 2006-2007 */ #include <linux/errno.h> @@ -63,13 +63,13 @@ #define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift) -static int ufs_trunc_direct (struct inode * inode) +static int ufs_trunc_direct(struct inode *inode) { struct ufs_inode_info *ufsi = UFS_I(inode); struct super_block * sb; struct ufs_sb_private_info * uspi; - __fs32 * p; - unsigned frag1, frag2, frag3, frag4, block1, block2; + void *p; + u64 frag1, frag2, frag3, frag4, block1, block2; unsigned frag_to_free, free_count; unsigned i, tmp; int retry; @@ -91,13 +91,16 @@ static int ufs_trunc_direct (struct inode * inode) if (frag2 > frag3) { frag2 = frag4; frag3 = frag4 = 0; - } - else if (frag2 < frag3) { + } else if (frag2 < frag3) { block1 = ufs_fragstoblks (frag2); block2 = ufs_fragstoblks (frag3); } - UFSD("frag1 %u, frag2 %u, block1 %u, block2 %u, frag3 %u, frag4 %u\n", frag1, frag2, block1, block2, frag3, frag4); + UFSD("frag1 %llu, frag2 %llu, block1 %llu, block2 %llu, frag3 %llu," + " frag4 %llu\n", + (unsigned long long)frag1, (unsigned long long)frag2, + (unsigned long long)block1, (unsigned long long)block2, + (unsigned long long)frag3, (unsigned long long)frag4); if (frag1 >= frag2) goto next1; @@ -105,8 +108,8 @@ static int ufs_trunc_direct (struct inode * inode) /* * Free first free fragments */ - p = ufsi->i_u1.i_data + ufs_fragstoblks (frag1); - tmp = fs32_to_cpu(sb, *p); + p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1)); + tmp = ufs_data_ptr_to_cpu(sb, p); if (!tmp ) ufs_panic (sb, "ufs_trunc_direct", "internal error"); frag2 -= frag1; @@ -121,12 +124,11 @@ next1: * Free whole blocks */ for (i = block1 ; i < block2; i++) { - p = ufsi->i_u1.i_data + i; - tmp = fs32_to_cpu(sb, *p); + p = ufs_get_direct_data_ptr(uspi, ufsi, i); + tmp = ufs_data_ptr_to_cpu(sb, p); if (!tmp) continue; - - *p = 0; + ufs_data_ptr_clear(uspi, p); if (free_count == 0) { frag_to_free = tmp; @@ -150,13 +152,12 @@ next1: /* * Free last free fragments */ - p = ufsi->i_u1.i_data + ufs_fragstoblks (frag3); - tmp = fs32_to_cpu(sb, *p); + p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3)); + tmp = ufs_data_ptr_to_cpu(sb, p); if (!tmp ) ufs_panic(sb, "ufs_truncate_direct", "internal error"); frag4 = ufs_fragnum (frag4); - - *p = 0; + ufs_data_ptr_clear(uspi, p); ufs_free_fragments (inode, tmp, frag4); mark_inode_dirty(inode); @@ -167,17 +168,20 @@ next1: } -static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p) +static int ufs_trunc_indirect(struct inode *inode, u64 offset, void *p) { struct super_block * sb; struct ufs_sb_private_info * uspi; struct ufs_buffer_head * ind_ubh; - __fs32 * ind; - unsigned indirect_block, i, tmp; - unsigned frag_to_free, free_count; + void *ind; + u64 tmp, indirect_block, i, frag_to_free; + unsigned free_count; int retry; - UFSD("ENTER\n"); + UFSD("ENTER: ino %lu, offset %llu, p: %p\n", + inode->i_ino, (unsigned long long)offset, p); + + BUG_ON(!p); sb = inode->i_sb; uspi = UFS_SB(sb)->s_uspi; @@ -186,27 +190,27 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p) free_count = 0; retry = 0; - tmp = fs32_to_cpu(sb, *p); + tmp = ufs_data_ptr_to_cpu(sb, p); if (!tmp) return 0; ind_ubh = ubh_bread(sb, tmp, uspi->s_bsize); - if (tmp != fs32_to_cpu(sb, *p)) { + if (tmp != ufs_data_ptr_to_cpu(sb, p)) { ubh_brelse (ind_ubh); return 1; } if (!ind_ubh) { - *p = 0; + ufs_data_ptr_clear(uspi, p); return 0; } indirect_block = (DIRECT_BLOCK > offset) ? (DIRECT_BLOCK - offset) : 0; for (i = indirect_block; i < uspi->s_apb; i++) { - ind = ubh_get_addr32 (ind_ubh, i); - tmp = fs32_to_cpu(sb, *ind); + ind = ubh_get_data_ptr(uspi, ind_ubh, i); + tmp = ufs_data_ptr_to_cpu(sb, ind); if (!tmp) continue; - *ind = 0; + ufs_data_ptr_clear(uspi, ind); ubh_mark_buffer_dirty(ind_ubh); if (free_count == 0) { frag_to_free = tmp; @@ -226,11 +230,12 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p) ufs_free_blocks (inode, frag_to_free, free_count); } for (i = 0; i < uspi->s_apb; i++) - if (*ubh_get_addr32(ind_ubh,i)) + if (!ufs_is_data_ptr_zero(uspi, + ubh_get_data_ptr(uspi, ind_ubh, i))) break; if (i >= uspi->s_apb) { - tmp = fs32_to_cpu(sb, *p); - *p = 0; + tmp = ufs_data_ptr_to_cpu(sb, p); + ufs_data_ptr_clear(uspi, p); ufs_free_blocks (inode, tmp, uspi->s_fpb); mark_inode_dirty(inode); @@ -248,13 +253,13 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p) return retry; } -static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p) +static int ufs_trunc_dindirect(struct inode *inode, u64 offset, void *p) { struct super_block * sb; struct ufs_sb_private_info * uspi; - struct ufs_buffer_head * dind_bh; - unsigned i, tmp, dindirect_block; - __fs32 * dind; + struct ufs_buffer_head *dind_bh; + u64 i, tmp, dindirect_block; + void *dind; int retry = 0; UFSD("ENTER\n"); @@ -266,22 +271,22 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p) ? ((DIRECT_BLOCK - offset) >> uspi->s_apbshift) : 0; retry = 0; - tmp = fs32_to_cpu(sb, *p); + tmp = ufs_data_ptr_to_cpu(sb, p); if (!tmp) return 0; dind_bh = ubh_bread(sb, tmp, uspi->s_bsize); - if (tmp != fs32_to_cpu(sb, *p)) { + if (tmp != ufs_data_ptr_to_cpu(sb, p)) { ubh_brelse (dind_bh); return 1; } if (!dind_bh) { - *p = 0; + ufs_data_ptr_clear(uspi, p); return 0; } for (i = dindirect_block ; i < uspi->s_apb ; i++) { - dind = ubh_get_addr32 (dind_bh, i); - tmp = fs32_to_cpu(sb, *dind); + dind = ubh_get_data_ptr(uspi, dind_bh, i); + tmp = ufs_data_ptr_to_cpu(sb, dind); if (!tmp) continue; retry |= ufs_trunc_indirect (inode, offset + (i << uspi->s_apbshift), dind); @@ -289,11 +294,12 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p) } for (i = 0; i < uspi->s_apb; i++) - if (*ubh_get_addr32 (dind_bh, i)) + if (!ufs_is_data_ptr_zero(uspi, + ubh_get_data_ptr(uspi, dind_bh, i))) break; if (i >= uspi->s_apb) { - tmp = fs32_to_cpu(sb, *p); - *p = 0; + tmp = ufs_data_ptr_to_cpu(sb, p); + ufs_data_ptr_clear(uspi, p); ufs_free_blocks(inode, tmp, uspi->s_fpb); mark_inode_dirty(inode); @@ -311,34 +317,33 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p) return retry; } -static int ufs_trunc_tindirect (struct inode * inode) +static int ufs_trunc_tindirect(struct inode *inode) { + struct super_block *sb = inode->i_sb; + struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; struct ufs_inode_info *ufsi = UFS_I(inode); - struct super_block * sb; - struct ufs_sb_private_info * uspi; struct ufs_buffer_head * tind_bh; - unsigned tindirect_block, tmp, i; - __fs32 * tind, * p; + u64 tindirect_block, tmp, i; + void *tind, *p; int retry; UFSD("ENTER\n"); - sb = inode->i_sb; - uspi = UFS_SB(sb)->s_uspi; retry = 0; tindirect_block = (DIRECT_BLOCK > (UFS_NDADDR + uspi->s_apb + uspi->s_2apb)) ? ((DIRECT_BLOCK - UFS_NDADDR - uspi->s_apb - uspi->s_2apb) >> uspi->s_2apbshift) : 0; - p = ufsi->i_u1.i_data + UFS_TIND_BLOCK; - if (!(tmp = fs32_to_cpu(sb, *p))) + + p = ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK); + if (!(tmp = ufs_data_ptr_to_cpu(sb, p))) return 0; tind_bh = ubh_bread (sb, tmp, uspi->s_bsize); - if (tmp != fs32_to_cpu(sb, *p)) { + if (tmp != ufs_data_ptr_to_cpu(sb, p)) { ubh_brelse (tind_bh); return 1; } if (!tind_bh) { - *p = 0; + ufs_data_ptr_clear(uspi, p); return 0; } @@ -349,11 +354,12 @@ static int ufs_trunc_tindirect (struct inode * inode) ubh_mark_buffer_dirty(tind_bh); } for (i = 0; i < uspi->s_apb; i++) - if (*ubh_get_addr32 (tind_bh, i)) + if (!ufs_is_data_ptr_zero(uspi, + ubh_get_data_ptr(uspi, tind_bh, i))) break; if (i >= uspi->s_apb) { - tmp = fs32_to_cpu(sb, *p); - *p = 0; + tmp = ufs_data_ptr_to_cpu(sb, p); + ufs_data_ptr_clear(uspi, p); ufs_free_blocks(inode, tmp, uspi->s_fpb); mark_inode_dirty(inode); @@ -375,7 +381,8 @@ static int ufs_alloc_lastblock(struct inode *inode) int err = 0; struct address_space *mapping = inode->i_mapping; struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi; - unsigned lastfrag, i, end; + unsigned i, end; + sector_t lastfrag; struct page *lastpage; struct buffer_head *bh; @@ -430,7 +437,9 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size) struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; int retry, err = 0; - UFSD("ENTER\n"); + UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n", + inode->i_ino, (unsigned long long)i_size_read(inode), + (unsigned long long)old_i_size); if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) @@ -450,10 +459,12 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size) lock_kernel(); while (1) { retry = ufs_trunc_direct(inode); - retry |= ufs_trunc_indirect (inode, UFS_IND_BLOCK, - (__fs32 *) &ufsi->i_u1.i_data[UFS_IND_BLOCK]); - retry |= ufs_trunc_dindirect (inode, UFS_IND_BLOCK + uspi->s_apb, - (__fs32 *) &ufsi->i_u1.i_data[UFS_DIND_BLOCK]); + retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK, + ufs_get_direct_data_ptr(uspi, ufsi, + UFS_IND_BLOCK)); + retry |= ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb, + ufs_get_direct_data_ptr(uspi, ufsi, + UFS_DIND_BLOCK)); retry |= ufs_trunc_tindirect (inode); if (!retry) break; @@ -502,6 +513,6 @@ static int ufs_setattr(struct dentry *dentry, struct iattr *attr) return inode_setattr(inode, attr); } -struct inode_operations ufs_file_inode_operations = { +const struct inode_operations ufs_file_inode_operations = { .setattr = ufs_setattr, }; |