diff options
Diffstat (limited to 'fs/ext4/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 646ece9b3455..7555cbe77148 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -41,7 +41,6 @@ #include <linux/bitops.h> #include <linux/iomap.h> #include <linux/iversion.h> -#include <linux/dax.h> #include "ext4_jbd2.h" #include "xattr.h" @@ -199,8 +198,7 @@ void ext4_evict_inode(struct inode *inode) */ if (inode->i_ino != EXT4_JOURNAL_INO && ext4_should_journal_data(inode) && - (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) && - inode->i_data.nrpages) { + S_ISREG(inode->i_mode) && inode->i_data.nrpages) { journal_t *journal = EXT4_SB(inode->i_sb)->s_journal; tid_t commit_tid = EXT4_I(inode)->i_datasync_tid; @@ -545,12 +543,21 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, } else { BUG(); } + + if (flags & EXT4_GET_BLOCKS_CACHED_NOWAIT) + return retval; #ifdef ES_AGGRESSIVE_TEST ext4_map_blocks_es_recheck(handle, inode, map, &orig_map, flags); #endif goto found; } + /* + * In the query cache no-wait mode, nothing we can do more if we + * cannot find extent in the cache. + */ + if (flags & EXT4_GET_BLOCKS_CACHED_NOWAIT) + return 0; /* * Try to see if we can get the block without requesting a new @@ -837,10 +844,12 @@ struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode, struct ext4_map_blocks map; struct buffer_head *bh; int create = map_flags & EXT4_GET_BLOCKS_CREATE; + bool nowait = map_flags & EXT4_GET_BLOCKS_CACHED_NOWAIT; int err; ASSERT((EXT4_SB(inode->i_sb)->s_mount_state & EXT4_FC_REPLAY) || handle != NULL || create == 0); + ASSERT(create == 0 || !nowait); map.m_lblk = block; map.m_len = 1; @@ -851,6 +860,9 @@ struct buffer_head *ext4_getblk(handle_t *handle, struct inode *inode, if (err < 0) return ERR_PTR(err); + if (nowait) + return sb_find_get_block(inode->i_sb, map.m_pblk); + bh = sb_getblk(inode->i_sb, map.m_pblk); if (unlikely(!bh)) return ERR_PTR(-ENOMEM); @@ -2944,8 +2956,7 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping, index = pos >> PAGE_SHIFT; - if (ext4_nonda_switch(inode->i_sb) || S_ISLNK(inode->i_mode) || - ext4_verity_in_progress(inode)) { + if (ext4_nonda_switch(inode->i_sb) || ext4_verity_in_progress(inode)) { *fsdata = (void *)FALL_BACK_TO_NONDELALLOC; return ext4_write_begin(file, mapping, pos, len, flags, pagep, fsdata); @@ -3967,15 +3978,6 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length) trace_ext4_punch_hole(inode, offset, length, 0); - ext4_clear_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA); - if (ext4_has_inline_data(inode)) { - filemap_invalidate_lock(mapping); - ret = ext4_convert_inline_data(inode); - filemap_invalidate_unlock(mapping); - if (ret) - return ret; - } - /* * Write out all dirty pages to avoid race conditions * Then release them. @@ -4991,7 +4993,6 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, } if (IS_ENCRYPTED(inode)) { inode->i_op = &ext4_encrypted_symlink_inode_operations; - ext4_set_aops(inode); } else if (ext4_inode_is_fast_symlink(inode)) { inode->i_link = (char *)ei->i_data; inode->i_op = &ext4_fast_symlink_inode_operations; @@ -4999,9 +5000,7 @@ struct inode *__ext4_iget(struct super_block *sb, unsigned long ino, sizeof(ei->i_data) - 1); } else { inode->i_op = &ext4_symlink_inode_operations; - ext4_set_aops(inode); } - inode_nohighmem(inode); } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { inode->i_op = &ext4_special_inode_operations; @@ -5398,6 +5397,7 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, if (attr->ia_valid & ATTR_SIZE) { handle_t *handle; loff_t oldsize = inode->i_size; + loff_t old_disksize; int shrink = (attr->ia_size < inode->i_size); if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) { @@ -5469,6 +5469,7 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, inode->i_sb->s_blocksize_bits); down_write(&EXT4_I(inode)->i_data_sem); + old_disksize = EXT4_I(inode)->i_disksize; EXT4_I(inode)->i_disksize = attr->ia_size; rc = ext4_mark_inode_dirty(handle, inode); if (!error) @@ -5480,6 +5481,8 @@ int ext4_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, */ if (!error) i_size_write(inode, attr->ia_size); + else + EXT4_I(inode)->i_disksize = old_disksize; up_write(&EXT4_I(inode)->i_data_sem); ext4_journal_stop(handle); if (error) |