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David Howells
2c8f4742bb
Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted. Fixes:4058f74210("netfs: Keep track of the actual remote file size") Fixes:100ccd18bb("netfs: Optimise away reads above the point at which there can be no data") Closes: https://sashiko.dev/#/patchset/20260414082004.3756080-1-dhowells%40redhat.com Signed-off-by: David Howells <[email protected]> Link: https://patch.msgid.link/[email protected] cc: Paulo Alcantara <[email protected]> cc: Matthew Wilcox <[email protected]> cc: [email protected] cc: [email protected] Signed-off-by: Christian Brauner <[email protected]>