October 2017
Intermediate to advanced
354 pages
9h 28m
English
Content preview from Mastering Linux Kernel Development
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Mount and unmount operations
Mount is an operation of enumerating an on-disk superblock and metadata into memory for the filesystem's use. This process creates in-memory data structures that describe file metadata and present the host operating system with a view of the directory and file layout in the volume. The mount operation is implemented to check consistency of disk volume. As discussed earlier, the superblock contains the state of the filesystem; it indicates whether the volume is consistent or dirty. If the volume is clean or consistent, a mount operation would succeed, and if the volume is marked as dirty or inconsistent, it returns with the appropriate failure status.
An abrupt shutdown causes filesystem state to be dirty, and ...