cregit-Linux how code gets into the kernel

Release 4.10 fs/ext4/truncate.h

Directory: fs/ext4
/*
 * linux/fs/ext4/truncate.h
 *
 * Common inline functions needed for truncate support
 */

/*
 * Truncate blocks that were not used by write. We have to truncate the
 * pagecache as well so that corresponding buffers get properly unmapped.
 */

static inline void ext4_truncate_failed_write(struct inode *inode) { down_write(&EXT4_I(inode)->i_mmap_sem); truncate_inode_pages(inode->i_mapping, inode->i_size); ext4_truncate(inode); up_write(&EXT4_I(inode)->i_mmap_sem); }

Contributors

PersonTokensPropCommitsCommitProp
theodore tsotheodore tso2856.00%150.00%
jan karajan kara2244.00%150.00%
Total50100.00%2100.00%

/* * Work out how many blocks we need to proceed with the next chunk of a * truncate transaction. */
static inline unsigned long ext4_blocks_for_truncate(struct inode *inode) { ext4_lblk_t needed; needed = inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9); /* Give ourselves just enough room to cope with inodes in which * i_blocks is corrupt: we've seen disk corruptions in the past * which resulted in random data in an inode which looked enough * like a regular file for ext4 to try to delete it. Things * will go a bit crazy if that happens, but at least we should * try not to panic the whole kernel. */ if (needed < 2) needed = 2; /* But we need to bound the transaction so we don't overflow the * journal. */ if (needed > EXT4_MAX_TRANS_DATA) needed = EXT4_MAX_TRANS_DATA; return EXT4_DATA_TRANS_BLOCKS(inode->i_sb) + needed; }

Contributors

PersonTokensPropCommitsCommitProp
theodore tsotheodore tso64100.00%1100.00%
Total64100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
theodore tsotheodore tso9581.20%150.00%
jan karajan kara2218.80%150.00%
Total117100.00%2100.00%
Directory: fs/ext4
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